Managing the Project
196 sources in the library on managing the project, 7 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 2 of 5.
- fair RN-DX7AAN cited
HomeOwners Alliance
Ten improvements with spend against value added, from HomeOwners Alliance research with the Federation of Master Builders and The Guild of Property Professionals. Removing an internal wall for an open plan kitchen diner costs around £3,500 and adds £48,000 in London or £27,000 in Dorset, and most builders finish it in under a week. Garden room £6,700 adds £36,000 in Surrey or £10,000 in London. Kitchen refresh £4,000 adds £15,000. Downstairs loo in an understairs cupboard £1,500 adds £26,000. Ensuite carved from a master bedroom £5,000 adds about £14,525 in London over roughly 11 days. Off street parking £2,000 adds £13,354 on an average Surrey property, with Direct Line putting a parking space at up to 13% of value. Back garden £4,000 adds £9,000. Repainting £1,000 adds £5,000. Loft conversion £20,000 adds £40,000. Obtaining planning permission costs up to £400 and can add up to 10% of value per Hamilton Fraser.
- fair RN-WWNN7R cited
HomeOwners Alliance
Whole house renovation cost benchmarks. Full structural survey £500 to £1,500 and a 10% contingency on the total. Single storey extension £1,800 to £3,000 per m2 with the rate falling as area grows, giving roughly £40,000 to £56,000, £60,000 to £84,000 and £100,000 to £140,000 for successively larger extensions. Loft conversion £27,500 to £75,000 with a dormer averaging £50,000. New bathroom average £6,000. New kitchen £10,000 to £20,000, with 10% of households spending over £50,000. Garage conversion average £6,000. Replacement uPVC window about £400 to £600 supplied and fitted per RICS. Installing central heating from scratch in a three bedroom house about £4,000; replacing a combi boiler about £2,700 per British Gas. Dry rot treatment by a specialist £1,000 to £2,000 per AXA, and woodworm treatment of a three bedroom loft £450 to £800, or £20 to £50 for DIY treatment, with active infestation identified by roughly 2mm holes and fresh sawdust.
Cited in How Much Does a New Kitchen Cost in 2026? (UK), Renovation Cost Per m²: Real UK Figures by Spec.
- fair RN-O6IZQA cited
Nationwide Building Society
Nationwide's 2025 house price research, based on its own HPI data. It finds that a loft conversion or extension adding a large double bedroom and bathroom can add up to 24% to a three-bedroom, one-bathroom house.
Cited in Does a Loft Conversion Add Value? UK Data & ROI, House Extension: The Complete Guide, How Much Does a House Extension Cost in 2026? (UK Guide), How Much Does a Loft Conversion Cost in 2026? and 5 more.
- fair RN-VI6AGO cited
Thames Water
Sets the trigger distances: an application is likely to be needed if you are building within 3 metres of a public sewer, or within 1 metre of the point where the pipe serving only your property crosses the boundary and becomes a public lateral drain. States plainly that planning permission does not grant permission to build over a sewer or drain, and that work should not start before the agreement is in place because the design may have to change. For a wholly new property, including a car port or shed not attached to the house, Thames Water requires the sewer to be diverted rather than built over. Liability for damage caused to sewers or drains during construction rests with the property owner. Asset maps can be viewed free of charge by appointment at Clearwater Court, Vastern Road, Reading RG1 8DB, or bought from utility search companies or the Property Searches department.
Cited in Building Over or Near a Sewer: Build-Over Agreements.
- fair RN-ITUBEV cited
Thames Water
Thames Water's homeowner build-over process, with its published 2026 fee scale and timescales. Three classes by sewer internal diameter: Class 1 £130 (175mm or less), Class 2 £490 (176mm to 350mm), Class 3 £585 (over 350mm) plus additional legal costs starting at £1,000. Class 1 and Class 2 agreements are usually issued within 21 days of receipt of all required information; Class 3 involves legal contracts and the full process can take more than 3 to 6 months. Class 2 fees include pre- and post-construction CCTV surveys; Class 3 adds two surveys by an approved contractor plus impact assessments. Applicants on disability benefit get a £130 discount on proof of entitlement (DWP letter or Blue Badge). Retrospective applications are accepted but need a CCTV or on-site survey to prove no damage, and may be refused if the pipework was not protected to specification. Self-service sewer diversion is offered where the internal diameter is 150mm or less, with a refundable £2,000 cash deposit returned after satisfactory post-construction inspection. Every application needs a location plan, an existing and proposed drainage layout showing manholes and flow direction, and a sectional drawing of the foundations against the sewer with invert levels; piling foundations need a piling method statement and raft foundations need structural calculations.
Cited in Building Over or Near a Sewer: Build-Over Agreements.
- supplier figure RN-ONKBV9 cited
Speed Screed
A screed contractor's guide to drying times. It gives the industry rule of thumb of one day per millimetre for the first 40 mm of a traditional screed and two days per millimetre beyond that.
Cited in Renovation Schedule of Works & Timeline (Free Template).
- supplier figure RN-JYWG83 cited
Vandersanden
A brick maker's site guidance on laying bricks in different weather. It says brickwork that freezes is damaged and must be protected below 0°C, with bricks covered against frost.
Cited in Renovation Schedule of Works & Timeline (Free Template).
- very strong RN-1Z09OS
Building Control Northern Ireland (the 11 district councils)
NORTHERN IRELAND. The scale of building control fees is set centrally by the Department of Finance under the Building (Prescribed Fees) Regulations (Northern Ireland) 1997 as amended in 2013 and 2022, with the current fees applying to applications made after 1 April 2022. Unlike England, where each authority or private approver sets its own charges, NI fees are prescribed and are not subject to annual increase, being revised periodically by the Department. There is a FIXED RATE plan fee for certain domestic extensions, detached domestic buildings such as garages, roofspace conversions and houses up to 250 square metres. For small extensions UNDER 20 SQUARE METRES the plan fee also covers all subsequent site inspections, so there is no separate inspection charge. Other work is charged on an estimated cost of works basis using a contractor's cost. Where part of the works is solely for a person with a disability that part is excluded from the fee calculation, and a full exemption applies where the works are exclusively for a person with a disability or are described as exempt. A fee calculator is provided.
- very strong RN-4ATLE5
Building Control Northern Ireland (the 11 district councils)
NORTHERN IRELAND. The Northern Ireland Building Regulations are made by the Department of Finance and administered by the 11 DISTRICT COUNCILS, so there is no private sector alternative: Northern Ireland has no approved inspectors and no registered building control approvers, and the England route of appointing a private building control body simply does not exist. The page lists the Building Regulations (Northern Ireland) 2012 with the amending regulations of 2014, 2016 and 2022, and links the current and historical Technical Booklets plus the contraventions and appeals route. The regulations are intended to secure the safety, health, welfare and convenience of people in and around buildings and to further the conservation of fuel and energy. The site names all 11 councils including Belfast City, Derry City and Strabane, Lisburn and Castlereagh, Newry Mourne and Down, Mid Ulster and Fermanagh and Omagh.
- very strong RN-UM90J1
Dwr Cymru Welsh Water
WALES and parts of England, since Dwr Cymru Welsh Water's operating area crosses the border. You must notify Welsh Water if extending over or within THREE METRES of a public sewer or lateral drain, across a network of more than 30,000 km of sewers. An application is unlikely to be accepted where the sewer's internal diameter exceeds 225 mm or the pipe is deeper than 3 metres, and a greater standoff may then be required; commercial extensions and new detached structures need a sewer diversion instead. Nothing may be built over or near water mains or pressurised sewers. There are two routes, self-certification against set criteria and a full application with technical assessment. The published charges are £278.10 for consent by letter with no network alterations, £936.85 for consent by letter after alterations, and £1,053.00 for consent by legal agreement, covering administration, any site inspection, technical support, liaison with building control or the approved inspector, and issue of the consent. Work must not start until consent is given, and sewer traces are strongly recommended before excavating. Accessibility adaptations get extra support via the Build Over Sewers team on 0800 917 2652.
- very strong RN-LNQ9GJ
Revenue Scotland
The Scottish replacement for Stamp Duty Land Tax, which every England-written renovation note gets wrong for Scottish readers. LBTT replaced UK Stamp Duty Land Tax in Scotland from 1 April 2015 and is collected by Revenue Scotland, not HMRC. Its structure is progressive in the same way as SDLT: the percentage rate for each band applies only to the part of the price above the relevant threshold and up to the next, and nothing is payable below the first threshold. Separate rate and band tables exist for residential properties, residential property with the Additional Dwelling Supplement, non-residential properties and commercial leases. The Additional Dwelling Supplement is the Scottish equivalent of the higher rates for additional properties. Revenue Scotland also administers the Scottish Landfill Tax, the Scottish Aggregates Tax and the Scottish Building Safety Levy, and publishes a tax calculator and legislation guidance.
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Health and Safety Executive
HSE's definition of a contractor under CDM 2015: anyone who directly employs or engages construction workers or manages construction work, including sub-contractors and any self-employed worker or business that carries out, manages or controls construction work, who must have the skills, knowledge, experience and, where relevant, the organisational capability to do the work safely. On all projects a contractor must make sure the client is aware of the CDM 2015 client duties before work starts, plan manage and monitor all their own work taking account of risks to anyone affected including members of the public, check that workers they employ or appoint have the necessary skills knowledge training and experience or are obtaining them, provide a suitable site-specific induction unless the principal contractor has already done so, provide appropriate supervision information and instructions, take reasonable steps to prevent unauthorised access before starting on site, and provide and maintain suitable welfare facilities from the start. On projects with more than one contractor they must also coordinate with the rest of the project team, comply with directions from the principal designer or principal contractor, and comply with the relevant parts of the construction phase plan. This is the source for what changes when a homeowner engages several trades directly rather than one main contractor.
- very strong RN-1PUNR2
Health and Safety Executive
The HSE's proportionality statement on legionella in domestic property, which corrects the common claim that landlords need a paid legionella certificate. Defines a landlord for this purpose as anyone renting out a property they own under a lease or licence shorter than 7 years, covering local authorities, housing associations, private landlords, housing co-operatives and hostels, and including renting a room within your own home. Identifies the legal basis as section 3(2) of the Health and Safety at Work etc Act 1974, with section 53 treating landlords as self-employed, plus the Control of Substances Hazardous to Health Regulations, and the Approved Code of Practice L8 on the control of legionella bacteria in water systems. States plainly that while there is a duty to assess the risk, this does not require an in-depth, detailed assessment, and that risks in most residential settings are generally low because of regular water usage and turnover. Sets out the low-risk profile: daily water use sufficient to turn over the entire system, cold water direct from a wholesome mains supply with no stored water tanks, and hot water from instantaneous or low volume heaters.
- very strong RN-SN2RBW
Health and Safety Executive
The HSE leaflet that carries the temperature range every hot water and cylinder note should cite. States there is a reasonably foreseeable legionella risk where water is stored or re-circulated, where water temperature in all or part of the system is between 20 and 45 degrees Celsius, where there are nutrients such as rust, sludge, scale and organic matter, and where water droplets can be produced and dispersed, giving showers and cooling tower aerosols as examples. Defines legionellosis as the collective name for the pneumonia-like illness caused by legionella bacteria, covering legionnaires' disease itself plus the less serious Pontiac fever and Lochgoilhead fever, and notes everyone is susceptible but higher risk attaches to people over 45, smokers and heavy drinkers, people with chronic respiratory or kidney disease, and anyone with an impaired immune system. Legionella pneumophila occurs naturally in rivers, lakes and reservoirs in low numbers but multiplies in purpose-built systems including cooling towers, evaporative condensers, hot and cold water systems, whirlpool and spa pools, humidifiers and air washers. Published 04/12 as leaflet INDG458, and points to the Approved Code of Practice L8 for detail on control.
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Health and Safety Executive
HSE's dutyholder table for CDM 2015. Defines a domestic client as someone having construction work done on their own home, or a family member's home, that is not part of a business; domestic clients are in scope but their client duties normally transfer to the contractor on a single contractor project and to the principal contractor where there is more than one contractor, unless the domestic client instead makes a written agreement with the principal designer to carry out the client duties. Commercial clients must make suitable arrangements for managing the project, appoint other dutyholders, allocate sufficient time and resources, prepare and provide relevant information, ensure the principal designer and principal contractor carry out their duties, and ensure welfare facilities are provided. Designers must eliminate, reduce or control foreseeable risks arising during construction and during maintenance and use. Principal designers are designers appointed by the client on projects involving more than one contractor.
- very strong RN-HNO5EW
HM Land Registry
HM Land Registry's collection of UK House Price Index reports for England, Scotland, Wales and Northern Ireland, published as reports and CSV, last updated 19 August 2026. The UK HPI is a National Statistic; the Northern Ireland House Price Index is calculated and published quarterly, and the Northern Ireland monthly sales volume is now estimated by dividing the quarterly total by 3. The July 2026 UK HPI was due at 9.30am on Wednesday 16 September 2026. Notes the March 2024 revision of estimates from January 2021 onward and a later identified error in cash and mortgage transaction counts for January 2021 to December 2022 which did not affect the indices or price levels. This is the authoritative average-price-by-local-authority source for any value uplift or 'extend or move' calculation.
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HM Revenue and Customs
Defines the boundary of the scheme, which decides whether a given trade's invoice should carry a CIS deduction. Work covered is most construction work to a permanent or temporary building or structure and civil engineering such as roads and bridges, and expressly includes preparing the site such as laying foundations and access works, demolition and dismantling, building work, alterations, repairs and decorating, installing systems for heating, lighting, power, water and ventilation, and cleaning the inside of buildings after construction work. The listed exceptions are architecture and surveying, scaffolding hire with no labour, carpet fitting, making materials used in construction including plant and machinery, delivering materials, and work on construction sites that is clearly not construction such as running a canteen. Confirms contractors must register but subcontractors need not, though unregistered subcontractors suffer deductions at a higher rate, and that the same rules apply to a business based outside the UK doing construction work in the UK.
- very strong RN-TBNA5T
HM Revenue and Customs
The single most useful correction for any derelict-property or doer-upper note. HMRC states flatly that there is no tax relief and no lower rate of SDLT for uninhabitable properties, that a very high proportion of repayment claims in this area are wrong, and that buyers should be cautious about being misled by repayment agents. Being suitable for use as a dwelling is not the same as being ready for immediate occupation, and if a building retains the character or identity of a residential property it is wholly residential for SDLT despite disrepair. Lists the defects that expressly do not make a property unsuitable for use as a dwelling, even in combination: temporary removal of bathroom or kitchen facilities before sale, substantial repair or replacement of windows, floors, doors or roof, replacement boiler and pipework, unsafe electrical wiring, services switched off, pest infestation, damp proofing needed or plasterboard damage, flood damage, the presence of asbestos, and structural defects that can be repaired. Past use as a dwelling is a strong indicator of suitability. Cites the Court of Appeal in Amarjeet and Tajinder Mudan [2025] EWCA Civ 799 as now legally binding, upholding the Upper Tribunal at [2024] UKUT 307 (TCC). Manual published 19 March 2016, updated 1 September 2026.
- very strong RN-YP8R7O
HM Revenue and Customs
The five conditions that must all be met for a sale to be free of Capital Gains Tax under Private Residence Relief, two of which renovation choices can break. You must have one home and have lived in it as your main home for the whole period of ownership; you must not have let part of it out, though having a lodger does not count; you must not have used part of the home exclusively for business purposes, and using a room as a temporary or occasional office expressly does not count as exclusive business use; the grounds including all buildings must be less than 5,000 square metres, just over an acre; and you must not have bought it just to make a gain. Where all apply the relief is automatic and no tax is due; where any fails there may be tax to pay. Married couples and civil partners can only count one property as their main home at any one time. The exclusive-business-use point is what a dedicated garden office or converted consulting room can trigger.
- very strong RN-RVXVV0
HM Revenue and Customs
Carries the actual deduction rates, which explain the difference between two builders' quotes and the numbers on a subcontractor's payment statement. A contractor must deduct 20 per cent from payments to a registered subcontractor, called net payment status or payment under deduction, and pass it to HMRC as an advance payment towards the subcontractor's tax and National Insurance. If the subcontractor is not registered for the scheme, the contractor must deduct 30 per cent instead. A subcontractor who does not want deductions taken in advance can apply for gross payment status, which also registers them for CIS. Registration applies to a sole trader, the owner of a limited company, or a partner in a partnership or trust, and is not required of an employee.
- very strong RN-6V9WLL
HM Revenue and Customs
The duties that attach to anyone who pays subcontractors for construction work, which matters for a homeowner acting as their own main contractor and for judging whether a builder is operating properly. Registration as a contractor is required if you pay subcontractors to do construction work, or if your business does not do construction work but has spent more than 3 million pounds on construction in the 12 months since the first payment. The six rules are: register before taking on the first subcontractor; check whether the person should be employed rather than subcontracted, with a penalty if they should be an employee; verify with HMRC that subcontractors are registered with CIS; make deductions from payments and pay them to HMRC, the deductions counting as advance payments towards the subcontractor's tax and National Insurance; file monthly returns and keep full CIS records, with a penalty for failing to; and notify HMRC of changes to the business.
- very strong RN-Z2OY0Q
Homes and Communities Agency with Ove Arup and Partners
the regional adjustment factors the cost book uses to carry a national rate to a region, Outer London 1.00 and Inner London 1.08 against Northern 0.86 and Wales 0.90. It is cited as the regional half of the book's derived London trade day rates rather than for the demolition costs the guidance is named for, which is why a London plasterer's rate points here
- very strong RN-WAUO83
Homes England
Establishes what the government's housing and regeneration agency actually does, which matters because renovation articles often name Homes England as a source of homeowner grants when its remit is different. Its stated functions are to use its powers, expertise, land, capital and influence to form partnerships bridging public and private sector delivery of new homes and regeneration; to champion sustainable, well-designed homes and places; and to support a more resilient, diverse and innovative housing sector by helping new market entrants and small and medium-sized enterprises grow, encouraging greater use of modern methods of construction, and promoting attention to building safety. It names its partners as local authorities, housebuilders, investors and developers, not individual homeowners, and it now also operates the National Housing Bank. Its strategic plan sets out its mission and strategic objectives.
- very strong RN-DSFI2B
Ministry of Housing, Communities and Local Government
This is the part of the Building Regulations that catches a whole-house renovation and is almost never mentioned in renovation guides. Requirement R1 of Schedule 1 applies to the erection of buildings AND to major renovation works to buildings, including existing dwellings, except where requirement RA1 (new dwellings) applies. Regulation 44C of the Building Regulations 2010 defines major renovation works as works at the end-user location encompassing structural modifications of the entire in-building physical infrastructure, or of a significant part of it. The duty is to provide in-building physical infrastructure from the service provider access point to the occupier network termination point capable of hosting copper, fibre or wireless delivering broadband speeds greater than 30 Mbps (paragraph 1.2); no cabling, equipment or anything beyond the network termination point is required (paragraph 1.4), and a multi-dwelling building undergoing major renovation must also have a common access point. Paragraph 1.5 exempts Schedule 2 Classes 2 to 7 work (sheds, domestic greenhouses, garages, conservatories and other small detached buildings with no sleeping accommodation), scheduled monuments under section 1 of the Ancient Monuments and Archaeological Areas Act 1979, listed buildings and buildings in conservation areas under sections 1 and 69 of the Planning (Listed Buildings and Conservation Areas) Act 1990 where compliance would unacceptably alter character or appearance, and major renovation works where the cost of compliance would be disproportionate to the benefit, which must be demonstrated to the building control body.
- very strong RN-M9H2XK
Ministry of Housing, Communities and Local Government
Non-statutory guidance published 13 July 2026 and updated 31 July 2026 when the PDF was replaced by an HTML version, applying to England, issued as an annex to the Awaab's Law Phase 2 guidance for social landlords. Its key date is that Phase 2 of Awaab's Law comes into effect on 30 November 2026, which extends the duty beyond the damp and mould and emergency hazards of Phase 1 to a wider set of hazards. The document sets the thresholds a social landlord uses to triage each hazard, which is the practical test of whether a reported defect starts the statutory repair clock. Useful for distinguishing what social tenants can require of a landlord from what a private homeowner or private tenant can, since Awaab's Law applies to the social rented sector.
- very strong RN-3MHLSF
Ministry of Housing, Communities and Local Government
The 8 page document that sets out what a competent person scheme operator must satisfy, and it is what connects UKAS accreditation to the schemes a homeowner meets. Records that schemes are authorised under paragraph 4A of Schedule 1 to the Building Act 1984 and named in Schedule 3 to the Building Regulations 2010 as amended, and that in all cases demonstration must be sufficient to meet BS EN ISO/IEC 17065:2012, the product certification body standard. Condition 1 requires the scheme operator to achieve and maintain UKAS accreditation to BS EN ISO/IEC 17065:2012, within one year of authorisation for an extension to an existing scheme or within two years for a new scheme operator, with a UKAS pre-assessment submitted with the application. Condition 3 requires assessors and inspectors to be competent at least to the equivalent level in the relevant sector Minimum Technical Competence assessment procedure. Condition 4 requires a transparent fee structure, self-financing within not later than five years of authorisation, and use of registrants' registration and notification fees only for the benefit of registrants or the sector. Condition 5 requires documented management of conflicts of interest, noting the risk where a scheme is owned by a larger commercial, trade or professional body. In force for any UKAS assessment begun on or after 1 April 2016.
- very strong RN-57XOOI
Ministry of Housing, Communities and Local Government
Planning practice guidance on CIL, last updated 17 June 2026. Confirms the self-build exemption for a new dwelling built by someone who will occupy it, provided the exemption is claimed and a commencement notice submitted before work starts. Householder extensions under 100 square metres fall within the minor development exemption; larger residential extensions can claim exemption under regulations 42A and 42B where the owner occupies the house as their sole residence. A late commencement notice triggers a surcharge of 20 per cent of the notional chargeable amount, capped at £2,500.
- very strong RN-0D3FRR
Ministry of Housing, Communities and Local Government
The publication page for the conditions a competent person self-certification scheme operator must meet, applying to England, first published 6 June 2012 and last updated 1 April 2016, from which date the conditions bite on any UKAS assessment begun on or after 1 April 2016. Hosts two documents: the main Competent person schemes conditions of authorisation of April 2016, an 8 page PDF of 289 KB, and a separate Building regulations: air tightness testing schemes conditions of authorisation of 5 pages and 141 KB, added 31 July 2014, because air tightness tester schemes carry different requirements from other types of work. Useful for establishing that a competent person scheme is a government-authorised, UKAS-accredited certification body rather than a trade membership list.
- very strong RN-WDQPUZ
Ministry of Housing, Communities and Local Government
The only official series on how large the competent person schemes actually are, collected every 6 months from the schemes authorised in schedule 3 of the Building Regulations 2010 as amended, covering total registered membership at the end of each period and the number of jobs those members undertook. Published 12 December 2012 and last updated 6 June 2018, with the latest document a 24 page PDF covering 1 October 2006 to 31 March 2018, so the series has not been refreshed since 2018 and any current membership figure quoted from it is dated. Three caveats matter for anyone citing the numbers: registered membership is counted by business not by individual, so the number of competent individuals is higher than the membership figure; the statistics combine all types of work except electrical installations for each scheme operator to avoid double counting members and notifications, because many members do more than one type of work; and schemes have changed over the collection period, so past and current data are not always meaningfully comparable.
- very strong RN-0RWQTJ
Ministry of Housing, Communities and Local Government
Statutory guidance published 23 June 2026, applying to England, issued under section 9 of the Housing Act 2004, which local authorities must have regard to when assessing hazards, and which replaces the previous operating guidance issued in 2006. The critical correction it carries is the hazard count: the HHSRS now covers 21 potential hazards, not the 29 in the 2006 guidance, and Part 2 contains a hazard profile for each of the 21. Confirms that a local authority must take enforcement action where it finds a category 1 hazard and has a power, not a duty, to enforce category 2 hazards. Issued in three parts: Part 1 an introductory guide (24 pages) on the theory, principles and assessment process; Part 2 a technical guide for assessors (174 pages) with the hazard profiles; Part 3 a supplementary guide to the hazard of fire and explosions (66 pages).
- very strong RN-6MMER0
Ministry of Housing, Communities and Local Government
The current NPPF, published 17 August 2026 (130 pages), replacing the framework first published March 2012 and revised July 2018, February 2019, July 2021, September 2023, December 2023 and December 2024, and also replacing Planning policy for traveller sites. The single most important thing about this edition for anyone citing it: the framework has been completely restructured from continuously numbered paragraphs into lettered and numbered policies, so every existing citation of an NPPF paragraph number is now stale. The chapters are Plan-making (PM1 to 17), Decision-making (DM1 to 10), Achieving sustainable development (S1 to 6), Climate change (CC1 to 3), Homes (HO1 to 13), Economy (E1 to 4), Town centres (TC1 to 4), Communications (CO1 to 2), Clean energy and water (W1 to 4), Minerals (M1 to 6), Making effective use of land (L1 to 3), Green Belt (GB1 to 8), Well-designed places (DP1 to 4), Transport (TR1 to 8), Healthy communities (HC1 to 8), Pollution (P1 to 6), Flood risk (F1 to 9), Natural environment (N1 to 6) and Historic environment (HE1 to 10). Policy GB7(1)(b) is the one homeowners meet: the reuse, extension, alteration or replacement of an existing building is not inappropriate development in the Green Belt provided the existing building is of permanent and substantial construction, is lawful in planning terms, and any extension or alteration will not result in a disproportionate increase in size compared to the original building, with footnote 40 defining the original building as the building that existed on 1 July 1948 or, if later, as it was originally built. Policy HE5(2)(c) now defines substantial harm expressly, as where a development proposal would seriously affect a key element of a heritage asset significance, and HE4(2) requires clear and convincing justification for any harm to a designated heritage asset.
- very strong RN-26UWTU
Ministry of Housing, Communities and Local Government
The GOV.UK landing page for Approved Document K, published 3 January 2013, ISBN 978 1 85946 484 7, covering protection from falling, collision and impact, including the design of staircases, ladders, ramps, guarding and vehicle barriers; this edition absorbed Approved Document N on glazing and some overlapping Approved Document M guidance. Since April 2023 the Building Safety Regulator has a duty under the Building Safety Act 2022 to keep the safety and standards of all buildings in England under review, which includes advising government on Approved Document updates. The linked PDF sets the figures a loft conversion note needs: the maximum pitch for a private stair is 42 degrees (Table 1.1 note 1); the normal relationship for rise and going is twice the rise plus the going between 550mm and 700mm; means of escape routes need a minimum clear headroom of 2m except in doorways (paragraph 1.12); and paragraph 1.13 with Diagram 1.4 allows reduced headroom for loft conversions in dwellings where there is not enough space, satisfied at 1.9m at the centre of the stair width falling to 1.8m at the side. Archived editions of Approved Documents K and N are at the National Archives.
- very strong RN-N39C7H
Office for National Statistics
ONS monthly and quarterly construction output bulletin, edition released 13 August 2026 covering June 2026 output, new orders and the Construction Output Price Indices for Quarter 2 (April to June) 2026; next release 11 September 2026. Reports total construction output up 0.3% in Q2 2026 on Q1 2026, with new work up 0.4% and repair and maintenance up 0.2%; five of nine sectors grew, infrastructure new work leading at 1.9%. Monthly output fell 0.1% in June 2026, after falls of 0.8% in May and 0.1% in April. Carries a 13 August 2026 correction notice about a public housing new work data error from January 2022 that raised the output level by about 1.2%.
- very strong RN-GMSJMF
Planning Portal (MHCLG and TerraQuest)
Planning Portal's statement of the permitted development limits for a loft conversion, which fall under Schedule 2, Part 1, Class B of the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, covering the enlargement of a dwellinghouse by an addition or alteration to its roof. Class C governs any other alteration to the roof and Class AA governs additional storeys. Permitted development does not apply where the building contains flats or is a flat, where additional storeys have already been added under permitted development, where the house was created from a non-residential use or built as a new dwellinghouse under permitted development, or on Article 2(3) designated land. The limits are: materials similar in appearance to the existing house; total enlargement including any previous enlargement not exceeding the original roof space by more than 40 cubic metres for terraced houses or 50 cubic metres otherwise; not exceeding the height of the existing roof; not extending beyond the existing roof slope on the principal elevation where it fronts a highway; no verandas, balconies or raised platforms; no installation, alteration or replacement of a chimney, flue or soil and vent pipe; and side-facing windows obscure-glazed and, if opening, 1.7m above the floor.
- very strong RN-I3VUJ8
Scottish Courts and Tribunals Service
Scotland's equivalent of the small claims track, and the figures differ sharply from England and Wales. A Simple Procedure claim can be made for payment of a sum of money where the value of the claim is 5,000 pounds or less, or for delivery or recovery of moveable property or an order to make someone do something, but in each of those cases only where there is an alternative money claim of 5,000 pounds or less. Where the value of the claim is over 5,000 pounds the ordinary cause procedure must be followed instead, so a Scottish homeowner with a 7,000 pound builder dispute is not in the simple track at all, unlike an English claimant whose small claims track runs to 10,000 pounds. Claims are made in the sheriff court by a claimant against a respondent, decided by a sheriff or summary sheriff, and no solicitor is required. New rules apply to claims initiated on or after 31 May 2023, and claims should be submitted through Civil Online, with sheriff approval needed to proceed on paper. Advises trying to settle first and considering Alternative Dispute Resolution, to which the sheriff may also refer parties after the claim form is lodged.
- very strong RN-NBV4MJ
Scottish Government
The Scottish equivalent of English competent person self-certification, and it works differently in ways every England-written note misses. Scotland uses a building warrant system under the Building (Scotland) Act 2003, with roles split between verifiers, approved building professionals (approved bodies and approved certifiers), local authorities and building owners. Certification in Scotland is optional, not the default, and covers design or construction, applying only where the work requires a building warrant; the works that can be certified are listed on the Scottish Government Certification Register, and the Scottish Government maintains the only authoritative list of registered approved building professionals. The benefit stated is that the work is certified by qualified building professionals as complying with regulations. Related guidance includes the Certification Handbook, Procedural Guidance on Certification covering what to submit with a building warrant application, and Modern methods of construction guidance for verifiers and certifiers. Applications for building warrants and completion certificates are submitted online through the eBuildingStandards.scot portal via an eDevelopment account.
- very strong RN-PFL4Z7
Scottish Government (gov.scot)
SCOTLAND, and it replaces England's Part P competent person scheme, which does not apply in Scotland at all. Published 1 May 2012, third edition, 48 page PDF, 683.6 kB. The handbook governs Scotland's two certification routes under the Building (Scotland) Act 2003: approved certifiers of design, used for structural design and for energy, and approved certifiers of construction, used for electrical installations and for drainage, heating and plumbing. A certificate from an approved certifier is accepted by the verifier as conclusive evidence of compliance for that part of the work, reducing what the verifier checks, but it does not remove the need for a building warrant or for the relevant person to submit the completion certificate. Scheme providers are listed on the certification register at certificationregister.co.uk. Contact is buildingstandards@gov.scot or 0131 244 6511.
- very strong RN-O86CR8
Scottish Government (gov.scot)
SCOTLAND. Paragraph 3.1.3 confirms the fee is payable at the time of application and that the verifier agrees with the applicant what drawings, specifications and other information are needed. Paragraph 3.1.4 requires a building warrant for a conversion as defined in schedule 2 of the building regulations even where no building work is proposed, which catches change of use jobs that England would treat as a material change of use under the Building Regulations 2010. Paragraph 3.1.5 requires an amendment to the warrant BEFORE work starts on any construction that departs from the approved drawings or specifications, and unamended changes can attract a building warrant enforcement notice. Offences can be reported to the Procurator Fiscal, though a building warrant enforcement notice under section 27 of the Act is the normal route, and it can only be served on the relevant person, so a builder working for a client cannot be served with one. Section 3.2 provides for pre-warrant meetings and customer agreements.
- very strong RN-6BGBFC
Scottish Government (gov.scot)
SCOTLAND, and this is where an England-based note goes wrong. A completion certificate confirms the building was constructed, demolished or converted in accordance with the warrant and the building regulations, and it is submitted by the relevant person, usually the owner or developer, not issued unprompted by the authority. It is an offence to submit a completion certificate known to be false, and an offence to occupy a new building, a conversion or an extension unless the completion certificate has been ACCEPTED by the verifier. Temporary occupation or use can be permitted under section 21 of the Act on application to the verifier, who takes account of mitigation such as means of escape in a partially completed building. The occupation bar does not apply to alterations, but a completion certificate for alterations must still be submitted before the warrant expires. Where an approved certifier of construction is involved, the relevant person must still certify completion. Section 9 notes that a local authority may operate a letter of comfort scheme for older unauthorised works, Scotland's practical counterpart to England's regularisation certificate.
- very strong RN-LR1JGD
Scottish Government (gov.scot)
SCOTLAND. Published 25 March 2026, ISBN 9781806439690, in force from 1 April 2026, and it carries the revised table of fees applicable to all building warrant applications, so it is the correct source for what a Scottish building warrant costs. It explains the procedures underpinning the Scottish building standards system as set out in the Building (Procedure) (Scotland) Regulations 2004 and the Building (Scotland) Act 2003. Scotland charges a building warrant fee scaled to the estimated value of the work, a structure with no direct England parallel now that England's building control charges are set locally by each authority or by a private registered building control approver.