An outdoor shower costs £330–£800 for a simple DIY cold-water set-up (the kit itself is £150–£300), £1,700–£3,700 for a properly plumbed hot-and-cold shower with a screen and base, or £4,300–£12,000+ for a bespoke outdoor wet room. The wide range reflects a genuine fork in what you are actually building: a summer cold rinse after the paddling pool is a very different project from a year-round alfresco shower that a holiday-let or pool house demands.

In the UK, most outdoor showers are cold-supply only (or cold with a solar pre-heat), installed as permitted development without planning permission, and drained to a soakaway rather than the foul drain, which is common practice rather than what the drainage rules actually prescribe. That keeps costs manageable. This guide covers both ends of the spectrum with realistic 2026 figures for each component.

Types of Outdoor Shower

Cold-water garden tap kit: The simplest option. A freestanding or wall-mounted unit fed from a standard outside tap (or a garden hose connection). The water is cold (or ambient-warmed in summer), and drainage is either into a drain gulley or dispersed across a gravel bed. Kits typically include the shower head, riser pipe, and a simple shut-off valve.

Solar-heated outdoor shower: Uses a black water tank (typically 20–35 litres) mounted at height, heated by direct sunlight. On a warm UK summer day this can reach 35–45°C. Suitable for gardens, allotments, and camping pitches. No connection to mains hot water needed.

Mains hot-and-cold outdoor shower: Properly plumbed to the household’s hot and cold supply, with a thermostatic bar valve (identical to an indoor shower). This is a legitimate year-round shower, genuinely useful alongside a pool, sauna, or hot tub, or in a holiday let. Requires a qualified plumber for the connection and pressure balancing.

Custom-built enclosure: Any of the above combined with a built enclosure, timber frame, masonry walls, or composite panels, that provides privacy and wind shelter. These account for most of the higher-end costs.

Planning Permission

Most outdoor showers are permitted development in England and do not require planning permission, provided any structure meets the Class E conditions for buildings incidental to the enjoyment of a dwellinghouse.1 Those conditions are:

  • The shower enclosure (if any) is no taller than 2.5 m within 2 m of a boundary, and elsewhere no more than 4 m with a dual-pitched roof or 3 m with any other roof, with eaves no higher than 2.5 m1
  • It, with every other outbuilding, does not cover more than 50% of the curtilage, leaving the ground area of the original house out of the sum1
  • It is not forward of the principal elevation of the house1
  • It does not include a verandah, balcony or raised platform, and a platform counts as raised once it is more than 0.3 m high, which matters if the shower stands on a deck2
  • In a National Landscape (formerly AONB), National Park, the Broads or a World Heritage Site, buildings and enclosures more than 20 m from the house are capped at 10 m² in total1
  • On any designated land, conservation areas included, nothing may sit between a side wall of the house and the boundary1
  • It is not within the curtilage of a listed building, where Class E does not apply (listed building consent is a separate requirement for works affecting the building’s character)1

Check with your local planning authority before starting if the property has any designations. The Planning Portal at planningportal.co.uk has a permitted development checker.

Building Regulations approval is not generally required for a simple shower unit, but the drainage matters: a drain is a controlled service under Part H, and providing one counts as building work.3 Part H counts water that has been used for washing as foul water, and the destinations it allows for foul water are a public sewer, a private sewer, a septic tank or other treatment system, or a cesspool.4 A soakaway is not on that list, which is the single most misunderstood point about outdoor showers and is discussed in the drainage section below.

Hot Water Supply Options

Supply MethodTypical CostNotes
Cold tap / hose only£0 additionalSeasonal use only for most people
Solar heating tank (20–35 L)£100–£350 for tankAmbient summer temperatures; no running cost
Extended pipe run from house (hot + cold)£400–£1,200 for pipework + plumberRequires insulation for year-round use
Dedicated outdoor electric shower£250–£600 unit + £300–£600 installRequires Part P-compliant electrical work; RCD protection essential
Electric heat pump supplement£600–£1,500 (no Boiler Upgrade Scheme grant)Rarely used for outdoor showers; overkill for most

A heat pump that only heats shower water gets no Boiler Upgrade Scheme grant, which funds a heat pump only where it can provide all of the home’s space heating.5

Running a pipe from the house is the most popular route for a usable year-round outdoor shower. An underground water supply pipe must be laid no less than 750 mm and no more than 1,350 mm deep, to limit both freezing and mechanical damage, or heavily lagged if it is surface-run.6 An uninsulated pipe run in an exposed location will freeze in a British winter.

Drainage Options

This is where UK outdoor showers differ most from warmer climates. The UK has persistent rainfall and clay-heavy soils in many regions, so drainage must be properly considered.

Soakaway: The common option for a cold outdoor shower producing low volumes of waste water (shower water without soap or chemicals). You dig a pit (typically 1 m × 1 m × 1 m minimum, filled with rubble or a proprietary crate system) and feed shower run-off into it. Be clear about what this is, though: the 5 m separation from a building that everyone quotes comes from Part H’s rules for rainwater infiltration devices, not from its foul water rules, and shower water is foul water.4 Putting it into the ground is a discharge to ground, which the Environment Agency regulates through environmental permitting rather than building control, and the permit exemption depends on meeting general binding rules written for septic tanks and small sewage treatment plants.7 Not suitable for heavy soap use, as detergents can damage the soil’s permeability over time.

Grey water dispersal: Some homeowners use shower water on garden beds via a simple diversion pipe. Part H expressly steps back from water diverted for re-use after personal washing, so collecting and reusing it is outside the drainage rules altogether.4 Ecologically fine for biodegradable soap; inadvisable if you use shampoos or synthetic surfactants directly on planting.

Connecting to foul drain: The route Part H actually prescribes. It ties the outdoor shower into the household drainage system so all waste water goes to the sewer. It typically involves cutting into an existing inspection chamber on your own drains. A new direct connection to a public sewer, as opposed to your own drains, needs notice of your proposals to the sewerage undertaker under section 106 of the Water Industry Act 1991.8 Cost: £300–£800 for a plumber including materials, depending on how far the shower is from the nearest foul drain run.

Trapped surface drain: For showers set in a paved area, a standard ACO or surface drainage channel can collect the water. This must then outlet to either a soakaway or foul drain, it does not resolve the destination question, only the surface collection.

Materials and Weatherproofing

UK weather demands proper material selection for any outdoor installation that is meant to last.

Stainless steel (316 marine grade): The premium choice. Resistant to corrosion in coastal and inland settings. Shower heads, risers, and thermostatic valves in 316 stainless will last 15–25+ years with minimal maintenance. More expensive than chrome or painted steel.

Teak and hardwood: Traditional for tropical-look showers. In the UK climate, teak requires annual oiling to maintain its colour (untreated it goes silver-grey, which many people prefer). Softwood is not suitable unless heavily treated and regularly maintained.

Composite decking: Commonly used as the shower floor in custom enclosures. Low maintenance, splinter-free, and available in a range of colours. Lay with gaps between boards to allow water to drain.

Powder-coated steel: Cheaper than stainless but vulnerable to rust if the coating chips. Suitable for a cold-supply summer shower; not recommended for year-round hot-water use in a UK coastal garden.

Masonry enclosures: Brick or blockwork with a render finish is the most durable enclosure material. Requires footings, and 450 mm is the minimum depth Approved Document A sets for a strip foundation to keep it clear of frost, more on shrinkable clay.9 It may also need Building Regs notification depending on size.

Full Cost Breakdown

ItemBudgetMid-RangePremium
Shower unit / kit£150–£300£400–£900£1,000–£3,000+
Hot water connection (plumber)-£400–£800£600–£1,200
Drainage (soakaway DIY)£80–£200£200–£400£400–£800 (foul drain)
Enclosure / privacy screen-£300–£800£1,500–£5,000+
Decking or paved base£100–£300£400–£800£800–£2,000
Electrical (only if electric shower; not in totals)-£300–£600£400–£800
Total£330–£800£1,700–£3,700£4,300–£12,000+

The premium end covers bespoke masonry enclosures with natural stone, thermostatic hot-and-cold supply, full privacy screening, concealed drainage, and external lighting. These are effectively outdoor wet rooms.

Plumber Day Rates (2026)

Connecting an outdoor shower to mains hot and cold supply is a half-day to one-day job for a qualified plumber, depending on pipe run distance and access.

  • Plumber day rate (2026): £300–£420/day in London; £270–£350/day outside London
  • Typical pipe run and connection job: 4–7 hours = roughly £135–£370 in labour plus materials
  • Part P electrical sign-off (if an electric shower is added): included when a registered electrician self-certifies the work; notifying building control yourself adds the council’s fee

All work on mains plumbing supply must be done by a competent person (ideally WaterSafe registered). An outdoor electric shower needs a new circuit, and a new circuit is notifiable under Part P: either a registered competent person self-certifies it, or you notify building control yourself before the work starts.10 A dedicated RCD and IP-rated switch gear are not optional outdoors.

Seasonal vs Year-Round Use

A cold-supply summer shower (May–September use) can be as simple as a wall-mounted head on a garden tap extension, total cost under £200 including installation. Freeze the pipework risk away by draining it at end of season.

A year-round shower needs: insulated pipe runs, a frost-stat or drain-down valve to protect the supply pipe in winter, a thermostatic bar valve to prevent scalding and maintain consistent temperature, and fittings rated for outdoor use. These additions add £300–£800 to the project cost but make the shower genuinely usable in the UK’s 9-month non-summer.

Key Questions Before You Start

  • Do you want hot water? This single decision more than doubles the project cost.
  • Where will the waste water go? Establish your drainage route before ordering anything.
  • Is your property designated? Designation does not switch permitted development off outright, but in a National Landscape, National Park, the Broads or a World Heritage Site anything more than 20 m from the house is capped at 10 m², on any designated land (conservation areas included) nothing may go beside the house, and listed building consent is a separate question on top.
  • How private is your garden? Even permitted-development structures need to respect neighbour amenity, a first-floor-height shower enclosure visible from neighbouring gardens can trigger an enforcement enquiry regardless of technical compliance.
  • Will it serve guests or tenants? Hold a holiday let outdoor shower to the same safety standard as an indoor one: a thermostatic valve for anti-scald protection, and documented electrical sign-off for any electrical work.
References (10)

Figures in this note were checked against the sources below on 2 October 2026. Superscript numbers in the text point to them. Every source the site cites, by topic.

  1. 1technicalvery strongThe National Archives (legislation.gov.uk), legislation.RN-J6L7TIThe primary legal text for garden rooms, sheds, summerhouses, pergolas, greenhouses and outdoor pools. Class E permits any building or enclosure, swimming or other pool within the curtilage required for a purpose incidental to the enjoyment of the dwellinghouse, plus a domestic heating oil container. Limitations: E.1(b) buildings, enclosures and containers other than the original dwellinghouse must not cover more than 50% of the curtilage; E.1(c) nothing forward of a wall forming the principal elevation of the original dwellinghouse; E.1(d) single storey only; E.1(e) maximum height 4 metres with a dual-pitched roof, 2.5 metres if any part is within 2 metres of a curtilage boundary, otherwise 3 metres; E.1(f) eaves no higher than 2.5 metres; E.1(g) not within the curtilage of a listed building; E.1(h) no verandah, balcony or raised platform; E.1(j) oil containers capped at 3,500 litres. E.4 defines incidental use as including keeping poultry, bees, pet animals, birds or other livestock for domestic needs or personal enjoyment, which is why a garden room used as a separate dwelling falls outside Class E.
  2. 2technicalvery strongThe National Archives, legislation.RN-OWGIY3Schedule 2 Part 1 of the GPDO 2015, development within the curtilage of a dwellinghouse. This is permitted development itself: Class A enlargement and alteration, with the limits and conditions, through the classes covering roof alterations, porches, outbuildings and hard surfaces. Every statement about what can be built without planning permission traces to this Part, and the exclusions at the start of each class are where most projects actually fall out.
  3. 3technicalvery strongThe National Archives (legislation.gov.uk), guidance.RN-LHGIK5Regulation 2(3) defines a thermal element as a wall, floor or roof separating conditioned space from outside or from an unconditioned part of the building.
  4. 4technicalvery strongMinistry of Housing, Communities and Local Government.RN-SM6TRWThe statutory source for soakaway design and the discharge hierarchy every garden drainage note should state. Requirement H3(3) lists the order of priority for rainwater discharge: (a) an adequate soakaway or other adequate infiltration system, or where not reasonably practicable (b) a watercourse, or where not reasonably practicable (c) a sewer. Paragraph 3.25 bars infiltration devices within 5 metres of a building or road, in ground where the water table reaches the bottom of the device at any time of year, too close to other drainage fields or soakaways, or where contamination could pollute groundwater. Paragraph 3.26: soakaways serving less than 100 square metres are generally square or circular pits filled with rubble or lined with dry-jointed masonry or perforated ring units. Paragraph 3.27: design to a return period of once in ten years, and for small soakaways serving 25 square metres or less a design rainfall of 10mm in 5 minutes may be assumed as the worst case. Paragraph 3.28 requires percolation tests to derive the infiltration rate, and paragraph 3.30 sends larger soakaways to BS EN 752-4 or BRE Digest 365 Soakaway design. Paragraphs 2.10 to 2.12 cover pervious paving over a granular storage reservoir and warn against its use where sediment or oil spillage would block the pores. For foul drainage, paragraph 2.33 sets a minimum 75mm internal diameter, or 100mm for a WC, and Table 6 gives minimum gradients of 1 in 40 for 75mm and 100mm at peak flows under 1 litre per second.
  5. 5technicalvery strongOfgem, guidance.RN-FAJTUKOfgem's scheme guidance for Boiler Upgrade Scheme installers, version 5.1. It settles that from 28 April 2026 a valid EPC is no longer needed, though an existing EPC's number must be supplied.
  6. 6technicalstrongWaterRegsUK (Water Regulations Advisory Scheme).RN-MVR3NJThe depths and protections that decide whether a new supply or a bathroom pipe run is compliant. Below ground, a water supply pipe must be laid not less than 750 mm deep and no greater than 1350 mm deep, to limit both freezing and mechanical damage; where a shallower run is unavoidable it needs the local water undertaker's consent and must be as deep as possible with added protection against warming, freezing and mechanical damage. Pipes and fittings must be suitable for below ground use, joints kept to a minimum, and the pipe embedded in non-abrasive material. Non-metallic fittings must not be in contact with soil contaminated by diesel, heating fuel, pesticides or similar substances. Insulation, installed to manufacturer instructions and to BS 5422 or BS EN ISO 12241, may delay but will not prevent freezing, so depth and routing do the real work. Above ground, pipework must remain accessible for maintenance and replacement, and concealed joints should be used only where unavoidable because they lose integrity over time. The page names Schedule 2 paragraph 7 for pipework and paragraphs 8, 9, 11, 12, 13 and 14 for system design and installation.
  7. 7technicalvery strongEnvironment Agency, a government page.RN-K7B13KThe Environment Agency's general binding rules for a small sewage discharge to ground, last updated 23 July 2026 - the rules a drainage field in a garden must satisfy, and the reason a garden layout is often constrained before a single slab is laid. The volume limit is 2 cubic metres (2,000 litres) or less a day. An environmental permit is needed instead of relying on the rules where: the discharge exceeds 2,000 litres a day to ground; the discharge point is in a groundwater source protection zone 1; the discharge is in or within 50 metres of an ancient woodland, special area of conservation, special protection area, Ramsar wetland or biological SSSI; a new discharge started after 2 October 2023 is within 50 metres of another exempt small sewage discharge; or a new discharge shares an outlet with existing discharges whose combined volume exceeds 2,000 litres a day. The system must be designed and installed to BS 6297:2007, which carries the siting distances and drainage field design. Engineered ground used for a drainage field must achieve a minimum percolation value (Vp) of 15.
  8. 8technicalvery strongThe National Archives (legislation.gov.uk), legislation.RN-PS0WRUThe statutory right that decides whether garden or driveway surface water can go to the sewer at all. Subsection (1) gives the owner or occupier of premises, and the owner of a private sewer, the right to have their drain or sewer communicate with the public sewer and to discharge foul water and surface water, subject to the section. Subsection (4) lets the sewerage undertaker refuse within 21 days of notice where the drain or sewer does not satisfy the standards reasonably required by the undertaker, or where the communication would be prejudicial to the undertaker's sewerage system. Subsection (2) prohibits connections that would allow discharge of liquid from a factory (other than domestic sewage or surface or storm water), any liquid whose discharge is prohibited by an enactment, foul water into a surface-water sewer or (without approval) surface water into a foul sewer, and any direct connection into a storm-water overflow sewer. The undertaker may require the lateral drain to vest under section 102. Disputes about the reasonableness of a refusal or requirement are determined by the Authority under section 30A.
  9. 9technicalvery strongMinistry of Housing, Communities and Local Government (GOV.UK).RN-Z6AXUWThe full Approved Document A PDF, which carries the deemed-to-satisfy tables a domestic project is checked against. Section 2E covers foundations of plain concrete: paragraph 2E3 gives the recommended minimum widths of strip foundations in Table 10, keyed to ground type and total load of loadbearing walling per linear metre. Table 10 sets, for rock (not inferior to sandstone, limestone or firm chalk, requiring at least a pneumatic or mechanically operated pick to excavate), a width equal to the width of the wall at every load. For medium dense gravel or sand (requires a pick to excavate, a 50mm square wooden peg hard to drive beyond 150mm) and for stiff clay or stiff sandy clay (can be indented slightly by the thumb), the minimum widths are 250mm at 20 kN per linear metre, 300mm at 30, 400mm at 40, 500mm at 50, 600mm at 60 and 650mm at 70. Firm clay and firm sandy clay (thumb makes an impression easily) start at 300mm. The document also covers minimum depth of strip foundations, wall thickness rules for residential buildings up to three storeys (paragraph 2C10 covers internal loadbearing walls in brickwork or blockwork), buttressing, lateral support by floors and at roof level, interruption of lateral support, wall cladding in Section 3, and Section 5 on reducing sensitivity to disproportionate collapse with the building consequence classes.
  10. 10technicalvery strongMinistry of Housing, Communities and Local Government.RN-JYJ3I5The document that decides what electrical work a homeowner may legally do themselves, and the exact list of notifiable jobs. Regulation 12(6A), reproduced at paragraph 2.5, makes only three things notifiable: the installation of a new circuit, the replacement of a consumer unit, and any addition or alteration to existing circuits in a special location. Regulation 12(9) defines special location as, in a room containing a bath or shower, the zone extending vertically from finished floor level to 2.25 metres (or the shower head position if higher) and horizontally 600mm from the edge of the bath tub or shower tray. Paragraph 2.7 states that all other electrical installation work is not notifiable, namely additions and alterations to existing installations outside special locations, and replacements, repairs and maintenance anywhere. Paragraph 2.8 gives worked examples: a built-in cooker is not notifiable unless a new cooker circuit is needed, and connecting an electric gate or garage door to an existing isolator is not notifiable but running a new circuit from the consumer unit to that isolator is. Paragraph 2.2 confirms Part P reaches outdoor work including fixed garden lighting, pond pumps and outbuildings such as sheds, detached garages and domestic greenhouses. Notifiable work must be certified by self-certification by a registered competent person, third-party certification, or a building control body (paragraph 3.1), with the compliance certificate issued within 30 days (paragraph 3.4). Note that Approved Document P is a source of guidance rather than a ban: non-notifiable work still has to comply with BS 7671.

  1. The Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2, Part 1, Class E: buildings etc. incidental to the enjoyment of a dwellinghouse, legislation.gov.uk, accessed 10 September 2026. legislation.gov.uk

  2. The Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2, Part 1: development within the curtilage of a dwellinghouse, legislation.gov.uk, accessed 30 September 2026. legislation.gov.uk

  3. The Building Regulations 2010, regulation 2: interpretation, legislation.gov.uk, accessed 30 September 2026. legislation.gov.uk

  4. Approved Document H, Drainage and waste disposal, 2015 edition, Ministry of Housing, Communities and Local Government, accessed 10 September 2026. assets.publishing.service.gov.uk

  5. Boiler Upgrade Scheme: Installer Guidance V5.1, Ofgem, accessed 2 October 2026. ofgem.gov.uk

  6. Installing pipework, WaterRegsUK, accessed 10 September 2026. waterregsuk.co.uk

  7. General binding rules: small sewage discharge to the ground, Environment Agency, GOV.UK, accessed 30 September 2026. gov.uk

  8. Water Industry Act 1991, section 106: right to communicate with public sewers, legislation.gov.uk, accessed 30 September 2026. legislation.gov.uk

  9. Approved Document A: Structure (2013 edition, incorporating 2004, 2010 and 2013 amendments), Ministry of Housing, Communities and Local Government, accessed 10 September 2026. assets.publishing.service.gov.uk

  10. Approved Document P, Electrical safety, Dwellings, 2013 edition, Ministry of Housing, Communities and Local Government, accessed 10 September 2026. assets.publishing.service.gov.uk