Bathroom Renovations near you

Installing a bathroom inside the existing house is not usually something your council needs to approve. The Planning Portal states that a planning application for installing a kitchen or bathroom is generally not required unless it forms part of a house extension, and adding an en suite within an existing bedroom sits comfortably inside that.

Three situations change the answer. If the bathroom is part of an extension, the extension is what gets tested against the permitted development limits — and note that the permitted development rules for extensions specifically exclude a soil and vent pipe from the work that is covered, so a new external soil stack on an extension needs checking rather than assuming. If the property is listed, consult the local planning authority first, since consent is needed for work affecting its special architectural or historic interest and proceeding without it is a criminal offence. If the property is a flat or maisonette, the householder permitted development rights that apply to houses do not apply at all.

The dividing line is whether the room was a bathroom before. Refitting an existing bathroom with new units and fittings does not generally require building regulations approval, though the drainage and electrical work that forms part of the refit may. Putting a bathroom into a room that did not have one — the classic en suite taken out of a bedroom, or a shower room made from a box room — is likely to require approval, so that the new room has adequate ventilation and drainage and meets requirements for structural stability, electrical safety and fire safety.

GOV.UK is more direct still in its list of work needing building regulations approval, which includes installing a bathroom that will involve plumbing and changing electrics near a bath or shower. In other words, most real bathroom projects touch building control somewhere, even when the room itself is not new.

You can use your local authority's building control service or a private registered building control approver; the choice is yours. Make sure the job is signed off and you receive the completion certificate, because GOV.UK warns that without approval you will not have the certificates of compliance you may need when you sell the property, and an unsigned-off en suite is a familiar problem in conveyancing.

A bathroom is the one room in an English house where Part P treats even modest electrical alterations as notifiable. Approved Document P makes the installation of a new circuit or the replacement of a consumer unit notifiable anywhere, and adds alterations to existing circuits when they are in a special location — and in England, special locations are the spaces around baths and showers. Adding a spur or moving a light in a bedroom is generally not notifiable; doing the equivalent next to a bath is.

That changes who should do the work and what you should receive afterwards. The simplest route is an electrician registered with a government-authorised competent person scheme such as NICEIC or NAPIT, who can self-certify that the work complies with the Building Regulations. Otherwise the work has to be notified to a building control body or certified by a registered third party. Approved Document P expects installations to follow BS 7671 and expects the householder to be given electrical installation certificates describing the work carried out.

Any new bathroom, shower room or toilet should be provided with a means of extract ventilation to reduce condensation and remove smells, with the requirements set out in Approved Document F, which covers the ventilation needed to maintain indoor air quality in dwellings. Where the room is being refurbished rather than created, the expectation is that existing extract ventilation is retained or replaced — so if the old fan comes out during the strip-out, something has to go back.

The practical stakes are highest in internal bathrooms and en suites with no openable window, where the fan is the only route moisture has out of the room. A fan that discharges to the outside, ideally with an overrun timer so it keeps running after the shower stops, is what stops steam migrating into the rest of the house and condensing on cold surfaces. In older solid-walled homes, recurring black mould in a bathroom corner is usually a ventilation problem wearing a cleaning problem's clothes, and no amount of repainting fixes it.

Approved Document H covers drainage and waste disposal, including foul water drainage above and below ground, pipe sizes, the protection of pipes, and manholes and inspection chambers. In a bathroom that translates into a short list of hard constraints: the WC needs a large-bore connection to the soil stack, it needs to run at a fall the pipe can actually achieve, and the length of run and number of bends are limited by what will clear reliably.

This is why a bathroom layout is not a blank sheet. Swapping a bath for a shower in the same position is straightforward; moving the WC to the opposite wall may mean lifting the floor, re-routing the soil pipe within the joist depth you have, and in some cases running a new connection to the stack outside. Where gravity drainage genuinely cannot be achieved — a WC below the drain level, or a shower room in an awkward corner — a pumped or macerating arrangement is the alternative, and it should be a considered decision rather than a default, because it brings its own maintenance and failure modes.

New external pipework is also where drainage meets planning: the permitted development rules for extensions expressly exclude a soil and vent pipe from the work they cover, so a new external stack on an extension is not something to assume is allowed.

The Planning Portal makes a point that catches people out: if the use of a room changes in a way that significantly changes the load on the floor structure, work to strengthen the floor may be necessary. Its own example is a bathroom — installing a new bathroom suite in a room with a floor of timber joists and boards carries a significant risk of the floor being overloaded by the bath once it is full of water and in use. A structural engineer or surveyor can assess whether strengthening is needed before anything is ordered.

That matters more now than it used to, because the fittings have got heavier. A cast iron or stone freestanding bath, a large-format tiled floor, a walk-in shower with a stone resin tray and a solid screen all add weight to joists sized decades ago for a small steel bath against a wall. Deflection is also what cracks grout and breaks tile bonds, so a floor that moves is a finish that fails.

Waterproofing is the other thing that has to be right before the visible work starts. Tiles and grout are not a waterproof layer; the tanking behind them is, particularly in a walk-in shower where water hits the wall directly. A contractor who can explain what goes behind the tile, and how the tray, the wall and the floor junction are sealed to each other, is describing the part of the job you will never see and will most regret if it is skipped.

Bathroom failures tend to surface slowly — a stain on a ceiling below, grout that keeps coming away, a fan that never cleared the steam — so knowing what you are covered by before that happens is worth a few minutes. Under the Consumer Rights Act 2015 the work must be performed with reasonable care and skill, and anything the trader told you that you relied on in deciding to go ahead becomes a term of the contract. If the service does not conform, you can require repeat performance at the trader's cost or a price reduction, and these rights cannot be excluded.

On top of that sits whatever the business itself offers. TrustMark registered businesses are expected to provide a minimum two-year guarantee, supported by insurance covering workmanship, rectification of defects and non-compliance with the Building Regulations should the business cease trading, with the Dispute Resolution Ombudsman available when a complaint cannot be resolved with the business or its scheme provider.

LokalMatch sits at the start of this process, not inside it. You describe the bathroom once — the room, whether the layout and drainage are changing, your postcode and your timing — and matched bathroom fitters and builders get in touch with you; the professionals pay for the requests they receive. LokalMatch does not carry out the work, does not set prices, and does not vet, rank or recommend any business, so checking scheme registration, insurance and the written scope is yours to do.