- Postcode districts
- GU9, GU10
- Nearby
- Aldershot, Fleet and Farnborough
- Guide price
- £800–£2,800
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Hard across most of Surrey
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Farnham?
For Farnham, our guide range for bathroom underfloor heating is £800 to £2,800 including VAT. Prices in South East England run at about 12% above the national guide, mainly because of labour rates. 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 Farnham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Farnham
In Farnham we cover GU9 and GU10; we also cover Aldershot, 2.8 miles away, and Fleet.
In Farnham, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. We check door thresholds in Farnham homes at the survey, because underfloor heating and new tiles raise the floor slightly. For Farnham homes having the bathroom floor replaced, underfloor heating adds one to two days to the fit.
Most of Surrey has 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
- Resistance and insulation tests on the mat before, during and after tiling, with the readings recorded
- Bringing the system up to temperature gradually once the adhesive and grout have cured
- The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit
- Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed
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.
Thermostat
A simple dial thermostat, a programmable one with set times, or a smart thermostat you can control from your phone.
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.

