References

Managing the Project

196 sources in the library on managing the project, 40 on this page cited in a published note. Each one says what the document covers and what it is good for. Name a source to see which document it is and where to read it. One at a time. Page 1 of 5.

  1. very strong RN-WG2Q3C cited

    Department for Business and Trade

    Monthly official commentary on construction material prices and deliveries, the tier 1 series to cite for any materials-inflation claim. The material price index for 'All Work' increased by 6.0% in June 2026 compared with June 2025, and repair and maintenance rose 5.7% over the same period. Fabricated structural steel was the largest single price mover at 17.7% year on year. Deliveries of bricks fell 16.3% and blocks 12.3% in June 2026 against June 2025. Prices of inputs of metals and non-metallic mineral products rose 8.4% in the year to July 2026, against a revised 9.0% in the year to June, driven partly by basic iron, steel and ferro-alloys. Sawn wood over 6 mm thick was a GBP1,176 million import category in 2025 but no timber-specific annual price change is given in this edition. Published monthly, roughly one month after the reference period, with data tables in Excel and ODS.

    Cited in How to Read a Builders' Merchant Quote & Avoid Overpaying.

  2. very strong RN-D7GLU7 cited

    Health and Safety Executive

    HSE page (updated 7 October 2025) defining a domestic client under CDM 2015 as any individual having construction work done on their own home or a family member's home that is not part of a business. On a single-contractor project the contractor automatically takes on the client's legal duties; where there is more than one contractor the principal contractor takes them on, unless the client makes a written agreement for the designer to act as principal designer.

    Cited in CDM Regulations 2015 for Domestic Clients Explained, Church Conversion Cost: 2026 UK Price Guide, Construction Law for Homeowners: The Complete Guide, Contractor vs Individual Trades: Which Should You Hire? and 3 more.

  3. very strong RN-2KFK3D cited

    Health and Safety Executive

    HSE's scaffolding page states that employers and self-employed contractors must assess the risk from work at height and plan the work so it is done safely, providing general access scaffolds wherever practicable. Scaffolding must be designed, erected, altered and dismantled only by competent people under the direction of a competent supervisor, following NASC Safety Guidance SG4 'Preventing falls in scaffolding operations' or equivalent manufacturer guidance for system scaffold. Strength and stability calculations are required unless the scaffold matches a generally recognised standard configuration for which a note of calculations exists, and a competent person must draw up an assembly, use and dismantling plan. Covers guard rails, toe boards, scaffold design, structures needing bespoke design, operative competence and scaffold inspection.

    Cited in Repointing Brickwork: Cost & How, Scaffolding Costs Explained.

  4. very strong RN-MA50UC cited

    Historic England

    Historic England's explanation of conservation areas: what designation means, and that there are around 10,000 in England, with at least one in every local planning authority.

    Cited in Renovating a Victorian House: Costs, Order & Common Pitfalls.

  5. very strong RN-M4EI24 cited

    HM Land Registry

    HM Land Registry's download page for Price Paid Data, the sale prices of homes in England and Wales. It confirms the data is free to download and reuse under the Open Government Licence.

    Cited in Does a Loft Conversion Add Value? UK Data & ROI, Does an Extension Add Value to Your Home?.

  6. very strong RN-GLZAMU cited

    HM Revenue & Customs (GOV.UK)

    The SDLT band table for a single residential property: zero up to 125,000 pounds, 2% on the portion from 125,001 to 250,000 pounds, 5% from 250,001 to 925,000 pounds, 10% from 925,001 to 1.5 million pounds and 12% above 1.5 million pounds. A 5% surcharge is usually added on top of these rates if the buyer already owns another residential property. HMRC's worked example gives 4,750 pounds on a 295,000 pound purchase (0 plus 2,500 plus 2,250). New residential leaseholds pay SDLT on the lease premium at these rates, plus 1% on the portion of the net present value of rent above the 125,000 pound threshold; this does not apply to assigned leases. This is the moving cost that has to be set against an extension or loft conversion budget.

    Cited in Does a Loft Conversion Add Value? UK Data & ROI, Extension vs Loft Conversion vs Moving House, How to Renovate a House: The Complete UK Guide.

  7. very strong RN-9KXRWL cited

    HM Revenue and Customs

    The section that kills the persistent claim that work to a listed building is VAT free. With effect from 1 October 2012 the zero rate for the first grant of a major interest in a substantially reconstructed protected building was withdrawn in cases where zero rating relied on three-fifths of the work, measured by cost, being approved alterations. The transitional relief that softened the change expired on 30 September 2015, and was only ever available where a relevant consent was applied for or a written contract entered into before 21 March 2012, or where 10 per cent of the substantial reconstruction was complete before that date. Zero rating survives only where the first grant of a major interest relates to a protected building substantially reconstructed from a shell. Defines a major interest as the freehold, in Scotland the absolute interest, or a lease of over 21 years, though not less than 20 years in Scotland. Ordinary alteration work to an occupied listed home is therefore standard rated at 20 per cent.

    Cited in Reclamation Yards & Salvage: Buying Reclaimed Materials.

  8. very strong RN-ZYLCD2 cited

    HM Revenue and Customs

    The 5 per cent conversion rate and, importantly, what it does not cover. A qualifying conversion into single household dwellings arises where the premises after conversion contain a greater or lower number, but not fewer than one, of single household dwellings, and includes a property never lived in such as an office block or a barn, a bedsit block, non-self-contained living accommodation such as staff rooms above a pub, and a dwelling previously adapted in its entirety to another use such as offices or a dental practice. It expressly does not include the creation of living accommodation that is not a single household dwelling, naming most granny annexes and additional bedrooms at a care home, nor the renovation of living accommodation used for other purposes without adaptation, such as a flat above a shop used for storage, which is directed instead to the section 8 empty homes rate. Paragraph 7.3.1 makes clear that work unrelated to changing the number of dwellings cannot be reduced rated, and works three examples through a block of sixteen flats showing that parts of a building are examined independently. Goods that are not building materials, such as carpets or fitted bedroom furniture, remain standard rated along with their installation.

    Cited in Church Conversion Cost: 2026 UK Price Guide, Who Buys the Materials: You or the Builder?.

  9. very strong RN-FX7S48 cited

    HM Revenue and Customs

    The section that carries the 5 per cent empty home rate, which most renovation budgets miss. A contractor may charge VAT at 5 per cent instead of 20 per cent on renovating or altering an eligible dwelling that has not been lived in during the 2 years immediately before the work starts. Paragraph 8.3.2 sets out what proves the two years: Electoral Roll and Council Tax records, utilities companies, or an Empty Property Officer at the local authority, and states that a letter from an Empty Property Officer certifying two years empty is sufficient on its own with no other evidence needed. Paragraph 8.3.3 lists occupation that can be ignored: illegal occupation by squatters, occupation by guardians installed to deter squatters and vandals, and non-residential use such as business storage, but expressly not occasional use as a second home, which defeats the relief. Paragraph 8.3.4 allows the reduced rate to continue on all the work even where people move in while the work is carried out, provided the two-year test was met when work started. Goods that are not building materials, such as carpets or fitted bedroom furniture, must still be standard rated including the installation charge.

    Cited in Roof Repair Costs & Common Problems (UK), Who Buys the Materials: You or the Builder?.

  10. very strong RN-26FMBT cited

    HM Revenue and Customs

    HMRC's internal manual chapter on the approved alteration zero rate, whose very title fixes the date the relief ended: the rules it explains are those prior to 1 October 2012, so a note that still tells readers to claim zero-rated VAT on approved alterations to a listed home is out of date by more than a decade. Manual published 19 March 2016 and updated 4 August 2026. The chapter contents show what the old test required and remains useful for pre-2012 work and for understanding the terms still used: VCONST08100 the basic conditions for zero-rating, VCONST08200 whether the work is to a protected building, VCONST08300 whether the work is an approved alteration, VCONST08350 whether the work is approved, VCONST08450 the distinction between alterations and repair or maintenance, VCONST08550 incidental alterations, VCONST08600 structures in the curtilage of a building, VCONST08700 certificates, VCONST08750 services excluded from zero-rating and VCONST08800 apportionment.

    Cited in Reclamation Yards & Salvage: Buying Reclaimed Materials.

  11. very strong RN-AW0FCY cited

    Ministry of Housing, Communities and Local Government

    The second volume of Approved Document B, needed when a homeowner project crosses out of purely domestic use. Paragraph 0.1 draws the line: Volume 1 deals solely with dwellings INCLUDING blocks of flats, so a flat conversion stays in Volume 1, while Volume 2 covers every other building type. Table 0.1 sets the purpose groups: 1(a) flat, 1(b) dwellinghouse with a habitable storey at least 4.5m above ground up to 18m, 1(c) dwellinghouse with no habitable storey 4.5m above ground, then 2(a) residential institutional, 2(b) residential other (hotel, boarding house, hall of residence, hostel), 3 office, 4 shop and commercial, 5 assembly and recreation, 6 industrial, 7(a) storage and 7(b) car parks for vehicles up to 2,500kg gross. Its notes keep work within purpose group 1: surgeries, consulting rooms or offices forming part of a dwellinghouse and used by an occupant in a professional capacity stay in group 1 provided they total no more than 50m2, and a detached garage or open carport of no more than 40m2 stays in group 1(c). Paragraph 0.21 requires a separate purpose group for an ancillary use if that use is a flat, or if the building or compartment exceeds 280m2 and the ancillary use is more than one fifth of the total floor area; paragraph 0.22 requires separate purpose groups for genuinely independent uses such as shops with offices above, and the more onerous guidance applies where there is doubt. Paragraphs 0.23 and 0.24 require Volume 1 to be consulted as well for mixed use buildings that include dwellings, and paragraph 3.2 requires separate escape routes, or other effective protection of common escape routes, where a building has storeys or parts of storeys in different purpose groups.

    Cited in Carpet Tile Installation Cost: 2026 UK Price Guide.

  12. very strong RN-SAMO3M cited

    Ministry of Housing, Communities and Local Government

    The official list of competent person schemes whose members can self-certify certain building work instead of getting building regulations approval, published 4 April 2013 and last updated 12 March 2018. Named schemes with contact numbers include ATTMA, APHC, Assure Certification, Blue Flame Certification, the British Board of Agrement, BESCA, Capita Gas Registration and Ancillary Services trading as Gas Safe Register, CIGA, Certass, Certsure LLP trading as NICEIC, the Elmhurst Airtightness Scheme, Fensa Limited, HETAS Limited, NAPIT Registration Limited, the National Federation of Roofing Contractors trading as CompetentRoofer, and OFTEC. Two footnotes matter: the Gas Safe Register is not technically a competent person scheme although in practice its installers carry the same building regulations responsibilities, and Benchmark Certification Limited ceased to operate as a competent person scheme on 10 February 2017, becoming part of NAPIT Registration Limited that day. Installers joining an electrical scheme are added to the single electrical competent person register.

    Cited in Adding Plug Socket Room Cost: 2026 UK Price Guide, Blown Window Repair Cost: 2026 UK Price Guide, Building Control Inspections Explained, Building Control: What It Is & When You Need It and 39 more.

  13. very strong RN-B869UP cited

    Ministry of Housing, Communities and Local Government

    The government plain-language map of the Building Regulations system in England, written after the Hackitt review called for the old manual to be revised, and split into Volume 1 (overview, chapters 1 to 8) and Volume 2 (further guidance, chapters A to F, plus key terms in Appendix I and references in Appendix II). It confirms that the Building Act 1984 sets the enforcement powers, that the Building Regulations 2010 contain 15 technical requirements in Schedule 1 each lettered as a Part, and that regulation 3 defines building work. Chapter 3 gives the list a renovation note can cite verbatim for when approval is likely to be needed: replacing consumer units or installing new circuits, new plumbing and waste connections, changing circuits near a bath or shower, installing ventilation or air conditioning, replacing windows and doors, replacing pitched or flat roof coverings, installing or replacing a heating system, adding extra radiators, removing a chimney breast, removing a wall (load bearing and sometimes non-load bearing) and creating a through lounge; it also confirms that new loft insulation unconnected to other building work is not checked by a building control body although it must still comply. Chapter 4 states that where work is done under a competent person scheme the installer or scheme operator notifies the local authority and issues a completion certificate within 30 days of completion, and that if work has already started or finished without notification an approved inspector cannot be used, leaving only local authority building control, which is not obliged to approve work already carried out. Chapter 3 also confirms courts can impose unlimited fines for non-compliance. Note the manual predates the Building Safety Act 2022 changes, so it still uses the term approved inspector rather than registered building control approver.

    Cited in All You Need To Know About Double Glazing Repairs.

  14. very strong RN-EUGGMV cited

    Ministry of Housing, Communities and Local Government

    MHCLG's official explanatory booklet on the Party Wall etc. Act 1996, applying to England and Wales, Crown copyright 2016. Explains the Act's effect on the Building Owner who wishes to carry out work covered by the Act and the Adjoining Owner who receives notice of it. Defines 'owner' for the Act's purposes as including anyone holding the freehold title, holding a leasehold title for a period exceeding one year, under contract to purchase such a title, or entitled to receive rents from the property, so a single property can have more than one owner. States clearly that the Act is separate from planning and building regulations control: agreement under the Act does not remove the need for planning permission or building regulations compliance, and neither does planning permission or building regulations compliance remove the need to comply with the Act. Carries a disclaimer that the booklet is a general guide and not an authoritative interpretation of the law.

    Cited in Cost to Underpin a House, Knocking Through & Removing Chimney Breasts, Loft Conversion Cost by London Borough, Loft Conversion Mistakes to Avoid and 5 more.

  15. very strong RN-O7TO5H cited

    Scottish Government (gov.scot)

    SCOTLAND, with no England equivalent: a seller in Scotland must commission a Home Report before marketing, where an England seller commissions nothing and the buyer pays for their own survey. Introduced in 2008 to give buyers and sellers better information on property condition before offers are placed, to stop duplicate surveys and valuations, and to stop artificially low asking prices. The Home Report comprises three documents: an Energy Report, a Property Questionnaire and a Single Survey, and only surveyors registered with or authorised to practise by RICS may produce the Single Survey. It was developed with the Home Report Implementation Group, whose members included RICS, the Law Society of Scotland, the Council of Mortgage Lenders, the National Association of Estate Agents and Citizens Advice Scotland. A five-year review followed a December 2013 consultation and a January 2015 research report.

    Cited in Building Surveys: Level 1, 2 & 3 Explained & Cost.

  16. very strong RN-04ZPUZ cited

    The National Archives

    GPDO Schedule 1 Part 1, which defines article 2(3) land. It includes conservation areas, areas of outstanding natural beauty and National Parks.

    Cited in Loft Conversion Cost by London Borough, Loft Conversion Mistakes to Avoid, Mansard Loft Conversions: The Complete Guide.

  17. very strong RN-8Z5K1W cited

    The National Archives (legislation.gov.uk)

    Section 20(1) prohibits practising or carrying on business under any name, style or title containing the word 'architect' unless the person is registered with ARB. Section 20(2) preserves the designations 'naval architect', 'landscape architect' and 'golf-course architect'. Section 20(3) lets a company, firm or partnership trade under a name containing 'architect' only where the architecture side of the business is under the control and management of a registered person who does not act in that capacity for another business at the same time, and where the work is carried on by or under the supervision of a registered person at every premises. Section 20(6) makes clear that being employed by another person does not stop someone from practising, section 20(7) defines business to include any undertaking carried on for gain or where services are not provided free, and section 20(8) preserves the validity of building contracts in customary form. This is why an architectural technologist or designer may lawfully do the same drawings but not use the protected title.

    Cited in Do I Need an Architect? Architect vs Designer vs Draughtsman.

  18. very strong RN-NKK4KZ cited

    The National Archives (legislation.gov.uk)

    Section 36(1) lets the building control authority, without prejudice to prosecuting for a fine, serve notice on the owner requiring work that contravenes building regulations to be pulled down or removed, or at the owner's election altered so as to comply. Section 36(2) applies the same power where work was executed without an application for building control approval, despite refusal of one, or otherwise than in accordance with the requirements of a granted application. Section 36(3) gives the owner 28 days, or longer if the appropriate court or tribunal allows, before the authority may carry out the work itself and recover the reasonable expenses. Section 36(4) is the key protection: a section 36 notice may not be given after 10 years from the date the work was completed. Sections 36(5) and 36(5A) bar a section 36 notice where a building control approval application for work that is not higher-risk building work was granted and the work was executed in accordance with the approved plans and any requirement imposed.

    Cited in Building Regs Enforcement: Section 36 Notices Explained, Completion Certificates & Why They Matter, Construction Law for Homeowners: The Complete Guide, How to Tell If a Wall Is Load-Bearing and 3 more.

  19. very strong RN-W0DK4I cited

    The National Archives (legislation.gov.uk)

    The provision that changed what a homeowner actually owes an insurer, and the correction to every article still saying you must disclose all material facts. Section 2(2) imposes a single duty on the consumer: to take reasonable care not to make a misrepresentation to the insurer. Section 2(4) states expressly that this duty replaces any duty relating to disclosure or representations by a consumer to an insurer that existed in the same circumstances before the Act applied, so the old volunteered-disclosure regime is gone for consumer insurance and the burden shifts to the insurer to ask clear questions. Section 2(3) provides that failing to comply with the insurer's request to confirm or amend particulars previously given is itself capable of being a misrepresentation, which is what catches a homeowner who ignores a renewal notice after an extension or loft conversion. In force from 6 April 2013 by S.I. 2013/450, with section 2(5) omitted from 12 August 2016 by the Insurance Act 2015.

    Cited in Timber Frame vs Masonry (Brick & Block) Construction.

  20. very strong RN-WUJM74 cited

    The National Archives (legislation.gov.uk)

    Section 52(1) applies where the contract does not expressly fix the time for the service to be performed or say how it is to be fixed, and where no information treated as included under section 50 fixes the time either. In that case section 52(2) treats the contract as including a term that the trader must perform the service within a reasonable time, and section 52(3) makes what is reasonable a question of fact. Section 52(4) points to section 54; the remedy for breach of the reasonable time term is a price reduction under section 56, not repeat performance. This is the provision to cite when a builder has no contractual completion date and has overrun.

    Cited in Builder Running Late? Delays & Liquidated Damages UK, Building Contracts: The Complete Guide, Construction Law for Homeowners: The Complete Guide, Consumer Rights Act 2015 & Building Work Explained.

  21. very strong RN-D47WL4 cited

    The National Archives (legislation.gov.uk)

    Section 34(1) imposes a duty on any person who imports, produces, carries, keeps, treats or disposes of controlled waste, or who controls it as a dealer or broker, to take all reasonable measures to prevent a section 33 offence or a breach of regulation 12 of the Environmental Permitting Regulations, to prevent waste escaping, and on transfer to pass it only to an authorised person or for authorised transport purposes together with a written description of the waste. Section 34(2) exempts an occupier of domestic property in respect of household waste produced on the property, but section 34(2A) still requires that occupier in England or Wales to take reasonable measures to ensure any transfer of that household waste is only to an authorised person. Section 34(3) lists authorised persons, including waste collection authorities, waste management licence holders and carriers registered under the Control of Pollution (Amendment) Act 1989. This is why a homeowner must check a waste carrier licence before paying for a clearance or grab lorry.

    Cited in Asbestos in the Home: Survey, Removal & Cost, Skip Hire Costs & Sizes.

  22. very strong RN-43Q4DG cited

    The National Archives (legislation.gov.uk)

    The definitive list of what counts as a statutory nuisance in England and Wales, which is the legal hook for most neighbour and building-work complaints. Section 79(1) names, among others: (a) any premises in such a state as to be prejudicial to health or a nuisance, which is the route used against damp and disrepair; (b) smoke emitted from premises; (c) fumes or gases emitted from premises; (d) dust, steam, smell or other effluvia arising on industrial, trade or business premises; (e) any accumulation or deposit; (fb) artificial light emitted from premises, which covers security lighting; (g) noise emitted from premises; and (ga) noise from a vehicle, machinery or equipment in a street. Each limb requires the matter to be prejudicial to health or a nuisance. Section 79(1) also places a duty on every local authority to inspect its area for statutory nuisances and, where a person living in its area complains, to take such steps as are reasonably practicable to investigate. Section 79(1A) excludes matters caused by land being in a contaminated state, and section 79(2) excludes Crown defence premises from the smoke, artificial light and noise limbs.

    Cited in Security Lighting & PIR Sensors.

  23. very strong RN-JXUGP4 cited

    The National Archives (legislation.gov.uk)

    The source for why a skip on the road needs a council permit while a skip on your own driveway does not. Section 139 makes it unlawful to deposit a builder's skip on a highway without the permission of the highway authority, and that permission names the highway and may attach conditions on the siting of the skip, its dimensions, the painting of the skip for visibility, the care and disposal of its contents, its lighting and guarding, and its removal at the end of the period. The owner must keep the skip properly lighted during the hours of darkness, clearly and indelibly marked with the owner's name and telephone number or address, and remove it as soon as practicable after it has been filled. Breach carries a fine not exceeding level 3 on the standard scale, with a defence where the breach was due to the act or default of another person and the owner took all reasonable precautions and exercised all due diligence. A builder's skip is defined as a container designed to be carried on a road vehicle for storing materials or disposing of rubble and waste.

    Cited in Keeping Neighbours Onside During Building Work, Loft Conversion Cost by London Borough, Skip Hire Costs & Sizes.

  24. very strong RN-CEXTH9 cited

    The National Archives (legislation.gov.uk)

    Section 169(1) bars anyone erecting or retaining scaffolding or any other obstructing structure on or over a highway in connection with building, demolition, alteration, repair, maintenance or cleaning work unless the highway authority has issued a licence in writing, and the licence may carry any terms the authority thinks fit. Section 169(2) obliges the authority to grant a licence once reasonable particulars are supplied, unless the structure would cause unreasonable obstruction or a differently arranged structure would obstruct less; 169(3) gives a right of appeal to a magistrates' court against refusal or against the terms. Section 169(4) requires the licence holder to light the structure from half an hour after sunset to half an hour before sunrise, to comply with written directions on traffic signs, and to protect statutory undertakers' apparatus. Breach is an offence under 169(5) with a fine up to level 5 on the standard scale. This is the legal basis for the pavement licence fee that appears on a scaffolding quote.

    Cited in Loft Conversion Cost by London Borough, Scaffolding Costs Explained.

  25. very strong RN-LOJL3V cited

    The National Archives (legislation.gov.uk)

    The statutory adjudication timetable, which is fast by design and is why builders and subcontractors use it against each other, though section 106 excludes contracts with a residential occupier so a homeowner cannot rely on it unless their contract adopts it voluntarily. A party may give notice at any time of an intention to refer a dispute, dispute including any difference. The contract must provide a timetable aimed at appointing the adjudicator and referring the dispute within 7 days of that notice, require the adjudicator to reach a decision within 28 days of referral or a longer agreed period, and allow the adjudicator to extend the 28 days by up to 14 days with the consent of the referring party. The adjudicator must act impartially and may take the initiative in ascertaining the facts and the law, and may correct a clerical or typographical error in the decision. The decision is binding until the dispute is finally determined by legal proceedings, arbitration or agreement, and the parties may agree to treat it as final. The adjudicator and their employees and agents are not liable except for acts or omissions in bad faith. Where a contract fails to comply with subsections (1) to (4), the adjudication provisions of the Scheme for Construction Contracts apply instead.

    Cited in Adjudication for Home Building Disputes Explained, Builder Contracts & JCT: Protecting Yourself, Builder Disputes: The Complete Guide.

  26. very strong RN-37ODVX cited

    The National Archives (legislation.gov.uk)

    Regulation 12(1) applies to anyone intending to carry out building work, replace or renovate a thermal element, change a building's energy status or make a material change of use. Regulation 12(2) requires that person to give the relevant authority either a building notice under regulation 13 or an application for building control approval with full plans under regulation 14. Full plans are compulsory where the Regulatory Reform (Fire Safety) Order 2005 applies (12(3)), where the building fronts onto a private street (12(4)) and where paragraph H4 of Schedule 1 applies (12(5)). Regulation 12(6) exempts work done by a competent person listed in Schedule 3, work listed in Schedule 4, and work inspected by a Schedule 3A third party certifier appointed before work starts. Regulation 12(6A) still requires notification for Part P electrical work consisting of a new circuit, a consumer unit replacement, or any addition or alteration to existing circuits in a special location such as the zone around a bath or shower. Regulation 12(8) allows a building notice after the event for emergency repairs. Text is up to date to 7 September 2026.

    Cited in Building Notice vs Full Plans Application, Building Regulations Explained for Homeowners, Extension Building Regulations: Homeowner Guide, House Rendering Cost: Whole-House Render Prices (2026) and 5 more.

  27. very strong RN-6CCBA1 cited

    The National Archives (legislation.gov.uk)

    Regulation 16(1) bars starting building work until notice of intention to start has been given to the relevant authority and at least two days have elapsed since the end of the day the notice was given. Regulation 16(3) lets the authority serve written notice requiring notification when a specified stage is reached, and may set a period before or after the work within which to notify and a period during which the work must not be covered up; under 16(3A) and 16(3B) a stage may only be specified if the authority intends to inspect it, based on its assessment of the risk of a breach. Regulation 16(3C) requires notice that work has commenced within five days of commencement, with a rejection notice possible within four weeks (16(3E)), deemed commencement if no rejection is given (16(3F)), and an appeal to the First-tier Tribunal within 21 relevant days (16(3H)) on grounds of error of fact, error of law, unreasonableness or failure to follow procedure. Regulation 16(4) requires notice within five days of completion.

    Cited in Bedroom Extension Cost: 2026 UK Price Guide, Building Control Inspections Explained, Building Control: What It Is & When You Need It, Building Notice vs Full Plans Application and 7 more.

  28. very strong RN-0BAHFU cited

    The National Archives (legislation.gov.uk)

    Regulation 17(1) requires the relevant authority to give a completion certificate in all cases where, after taking all reasonable steps, it is satisfied that the relevant provisions have been complied with following completion of the building work. Regulation 17(2) sets the specified period at eight weeks starting from the date the authority receives the regulation 16(4) completion notice, or the equivalent notice under regulation 22A(1) of the Building (Registered Building Control Approvers etc.) (England) Regulations 2024. The relevant provisions checked are listed at 17(2A) and include regulation 25A high-efficiency alternative systems, regulation 26 target CO2 emission rates, regulation 26A target fabric energy efficiency, regulation 26C target primary energy rates, regulation 36 water efficiency, regulation 38 fire safety information, Schedule 1, and regulation 7A of the Energy Performance of Buildings (England and Wales) Regulations 2012. Critically, regulation 17(4) states the certificate is evidence but not conclusive evidence of compliance, and 17(5) requires the certificate itself to say so. This version applies to England only.

    Cited in Building Control Inspections Explained, Building Control: What It Is & When You Need It, Building Regulations Explained for Homeowners, Completion Certificates & Why They Matter and 1 more.

  29. strong RN-Z3SQTD cited

    Chartered Trading Standards Institute, Business Companion

    CTSI's official business guidance on Part 1 Chapter 4 of the Consumer Rights Act 2015, which governs the supply of services to consumers, including where goods are supplied as part of a contract for work and materials. Sets out what the consumer can expect as statutory rights, and the tiered remedies for breach: repeat performance first, then price reduction, then other remedies. Defines a trader as a person acting for purposes relating to their trade, business, craft or profession, including a partnership, company, charity, government department, local authority or public authority, and makes a trader responsible for contracts made in its name by someone acting on its behalf. Also covers exceptions where the consumer cannot claim, time limits for court action, unfair contract terms, negligence, misrepresentation and the trader's identity. Guidance is for England and Wales.

    Cited in Builders' Merchants: The Complete UK Guide (2026).

  30. strong RN-QBL5CW cited

    Royal Institute of British Architects

    RIBA describes the Plan of Work as the definitive model for the design and construction process of buildings, organising briefing, designing, constructing and operating a project into eight stages and setting out the stage outcomes, core tasks and information exchanges required at each stage. The current version is the RIBA Plan of Work 2020, whose Overview is a free download and is based on nearly seven years of feedback from the construction industry, including a full glossary and a comparison with international plan of work equivalents. Nine core project strategies run through the stages: Conservation, Cost, Fire Safety, Health and Safety, Inclusive Design, Planning, Plan for Use, Procurement and Sustainability. RIBA also publishes an A4 printer friendly overview, a Plan of Work 2020 Template and a Toolbox containing a Design Responsibility Matrix, plus dated overlays including DfMA (November 2021), Passivhaus (February 2023), Security (April 2023), Inclusive Design (July 2023), Engagement (January 2024) and Smart Building (February 2024). This is the source for what an architect means by 'RIBA Stage 3' in a fee proposal.

    Cited in Do I Need an Architect? Architect vs Designer vs Draughtsman.

  31. strong RN-25YUC4 cited

    Royal Institution of Chartered Surveyors

    The RICS professional statement that defines the three survey levels a homebuyer is offered, and the standard a note should cite instead of describing surveys loosely. Page updated 17 June 2026. The 1st edition was published in 2019 and became effective in 2021; it sets mandatory requirements for RICS members and regulated firms in the UK delivering residential property surveys, and it replaced and harmonised the earlier RICS residential survey publications. It defines four report products, RICS Home Survey Level 1, Level 2 (survey only), Level 2 (survey and valuation) and Level 3, and a member needs a Home Surveys Licence to produce any of them. The old report formats were permitted only during a transition period from 1 March to 31 August 2021, and the new reports have been mandatory since 1 September 2021. The standard is currently under review: a public consultation on a 2nd edition ran from 19 August to 14 October 2025, informed by a survey of 325 members and a UK consumer survey of over 1,400 homeowners, with proposed changes covering AI and drone or camera-pole technology, greater clarity on survey levels, optional valuation at all levels, guidance for additional risk dwellings, and retrofit assessments. RICS states members should continue to use the 1st edition until the 2nd edition takes full effect, so any note dating the change should say the 2nd edition is not yet in force.

    Cited in Building Surveys: Level 1, 2 & 3 Explained & Cost.

  32. strong RN-K45EY4 cited

    Royal Institution of Chartered Surveyors

    The rulebook behind every professional cost per square metre figure, and free to download as a PDF from RICS, which makes it directly citable rather than paraphrased. NRM 1 is issued by the RICS Quantity Surveying and Construction Professional Group as one of a suite of three (NRM 1 order of cost estimating and cost planning, NRM 2 detailed measurement for building works, NRM 3 order of cost estimating and elemental cost planning for building maintenance works), all reissued in October 2022 as practice information having been published in October 2021 as guidance notes, with no material change to content. NRM 1 covers quantification of building works for cost estimates and cost plans, and also how to quantify the items that are not measurable building work: preliminaries, overheads and profit, project team and design team fees, risk allowances, inflation, and other development and project costs. It sets out the floor area method for order of cost estimates and defines the terms a note should use precisely: cost per m2 of gross internal floor area (cost/m2 of GIFA) is the unit rate which, when multiplied by the gross internal floor area, gives the total building works estimate, and gross internal floor area (GIFA, also gross internal area or GIA) is defined in Appendix A with reference to the latest edition of the RICS Code of Measuring Practice. It also distinguishes GEA (gross external area) and NIA (net internal area). This is the source to cite for why a cost per m2 figure is meaningless without stating which area basis it uses.

    Cited in Quantity Surveyors for Homeowners: Do You Need One, Quote vs Estimate: What's the Difference.

  33. strong RN-BNGAID cited

    United Kingdom Accreditation Service

    The live UKAS register of accredited bodies currently under sanction. It records the British Board of Agrement under imposed suspension from 26 February 2026 across all four of its accreditations: ISO/IEC 17065 product certification and ISO/IEC 17021 management systems under reference 0113, ISO/IEC 17020 inspection under 4345, and ISO/IEC 17025 testing under 0357. This is the page to check before repeating any advice that treats a BBA certificate as accredited third party assurance.

    Cited in Breathable Membranes for Roofs & Walls, Damp Proof Membranes (DPM) & DPC: Types & Installation, EPC Ratings Explained & How to Improve Yours, External Wall Insulation (EWI) Systems & Finishes and 4 more.

  34. good RN-NCQ9QN cited

    Chartered Institute of Architectural Technologists (CIAT)

    CIAT's home page, which lists qualifying as a Chartered Architectural Technologist (MCIAT) among its membership routes. It settles what the MCIAT letters denote.

    Cited in Do I Need an Architect? Architect vs Designer vs Draughtsman.

  35. good RN-D2653H cited

    The Joint Contracts Tribunal

    The publisher's own product page for the JCT Home Owner contract variant intended for a home owner or occupier who has appointed a consultant to administer the contract on their behalf, which is the HO/C form as distinct from HO/B where the homeowner deals with the builder directly. It sits in JCT's Home Owner Contracts category, the suite JCT publishes specifically for domestic building work rather than commercial projects. Use this to confirm which JCT home owner form applies when a note tells a reader to put the job on a written standard contract.

    Cited in JCT Home Owner Contracts Explained (HO/B & HO/C), Loft Conversion Quotes: Compare Builders, Avoid Overpaying.

  36. fair RN-IED4GG cited

    Citizens Advice

    Citizens Advice sets out six steps for a homeowner before work starts: check if you need permission or approval, find good traders, get quotes before deciding, check that you and your trader have insurance, get a written contract, and know what to do if there are problems. Advice applies to England, with separate versions for Northern Ireland, Scotland and Wales. It names the professional registers to search: a planning consultant on the Royal Town Planning Institute website, a surveyor on the RICS website and an architect on the Architects Registration Board website. Warns that without the permission or approval needed you might be fined, prosecuted, made to put things right or undo the work, and may have problems selling later. Confirms planning permission is usually needed to build something new such as an annexe, to make a major change such as an extension, or to change the use of a building.

    Cited in Building Contracts: The Complete Guide, Cowboy Builders: Warning Signs Before & During a Job, Day Rate vs Fixed Price: Which to Agree for Building Work, How to Brief a Builder: Writing a Scope of Works and 4 more.

  37. fair RN-MMRYZC cited

    Citizens Advice

    Explains the two card claw back routes for a deposit paid to a trader. Section 75 of the Consumer Credit Act applies where payment was by credit card or buy now pay later and the single item or job costs more than £100 and no more than £30,000; paying only part of the price on the card still lets the whole amount be claimed, so a £50 deposit on a £250 job supports a claim for the full £250. Chargeback covers debit cards and sub £100 credit card spends, and only recovers the amount actually put on the card. The £100 threshold is judged per item, not per basket: a £105 order of an £80 phone and £20 headphones fails Section 75. PayPal disputes must be opened within 180 days of payment.

    Cited in Section 75: Paying Your Builder by Credit Card.

  38. fair RN-UP9X4N cited

    Financial Ombudsman Service

    The three step complaint route and its clocks, used for buildings insurance, subsidence and home improvement finance disputes. Step one is to complain to the financial business itself, saying what happened and how it should be put right. Step two: for most complaints the business has up to 8 weeks to consider it, cut to 15 days for complaints about fraud and scams, payment services such as bank transfers and direct debits, and electronic money. Step three: the complaint must be brought to the Ombudsman within 6 months of the date on the final response, or at any time once the business has run out of time without replying. The service is free and no lawyer or claims management company is needed; a family member or friend can help instead.

    Cited in Section 75: Paying Your Builder by Credit Card.

  39. fair RN-U2LAK2 cited

    HomeOwners Alliance

    HomeOwners Alliance consumer guide to the cost of selling a home in 2026; it states sale conveyancing usually costs £610 to £950, with extra for leasehold.

    Cited in Extension vs Loft Conversion vs Moving House.

  40. fair RN-XVS228 cited

    HomeOwners Alliance

    HomeOwners Alliance consumer guide to estate agent fees in 2026; it gives the typical sole-agency fee range of 1.2% to 1.8% including VAT used in the moving-cost table.

    Cited in Extension vs Loft Conversion vs Moving House, How to Renovate a House: The Complete UK Guide.