- Postcode districts
- SW3, SW7, SW10
- Nearby
- Battersea, Fulham and Shepherds Bush
- Guide price
- £900–£3,100
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Very hard across most of Greater London
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Chelsea?
For Chelsea, our guide range for bathroom underfloor heating is £900 to £3,100 including VAT. Labour costs in London put local prices at about 25% above the UK guide figure. The figure depends on the size of the room, whether anything moves, and the products you pick.
Electric mat
- Insulation board
Electric, larger room
- Electrician sign-off
Wet system
- Pipes linked to the heating
Guide prices for Chelsea including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Chelsea
We work right across Chelsea — SW3, SW7 and SW10 — and in neighbouring Battersea and Fulham.
In Chelsea, many bathrooms are in flats or converted houses, so we check lease consents, access and the floor below before we price. For Chelsea homes having the bathroom floor replaced, underfloor heating adds one to two days to the fit. Whether your Chelsea bathroom is a small en-suite or a large main bathroom, the mat is sized to the open floor, not the whole room.
Most of Greater London has very hard water. Hard water leaves white marks on dark grout and gloss tiles, so matt finishes and stain-resistant grout are the practical choice. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit
- A floor sensor set between the heating runs and wired back to the thermostat
- Resistance and insulation tests on the mat before, during and after tiling, with the readings recorded
- For wet systems, pipes in low-profile boards or screed connected to a manifold or single-zone kit, with any boiler work done by a Gas Safe registered engineer
Decisions to make first
Mat or loose cable
Mats are quickest on square, open floors. Loose cable is easier to route around awkward shapes, pipe boxing and a curved shower area.
Electric or wet
Electric is cheaper to install and quick to lay in one room. Wet costs more upfront but is usually cheaper to run where it is fed by a gas boiler or heat pump.
Rules that apply in England
In England, a new circuit for underfloor heating is notifiable under Part P, and so is connecting it to an existing circuit in a room with a bath or shower. The electrician either self-certifies through a competent person scheme or the work is notified to building control.
