External wall insulation in Farnham
Every external wall insulation job in Farnham starts with a free survey of your walls: what they are built from, how they have weathered, and what the details around windows, eaves and services will need.
Homes in and around Farnham
Farnham is in the GU9 postcode district, about 13 miles from Woking. 6 other towns we cover are within 25 miles.
Our Farnham surveys cover the GU9 district and the surrounding area, including Aldershot, Fleet and Farnborough.
Most EWI failures start at the edges rather than the middle of a wall, so the quote for your Farnham home sets out how each detail will be built.
Nearby towns we cover: Aldershot (3 miles), Fleet (5 miles), Farnborough (6 miles), Bordon (7 miles), Godalming (8 miles), Camberley (9 miles).
External wall insulation prices in Farnham
Guide prices for external wall insulation in Farnham run from about £109 to £175 per square metre installed, depending on system and finish; scaffolding priced per house, with VAT at 0% on homes until 31 March 2027.
Whole-house prices include standard scaffolding, beads, sills and refitting services; unusual access, footpath licences and wall repairs are quoted separately.
Popular services in Farnham
- EWI installation
- Mineral wool EWI
- Wood fibre EWI
- Insulated cladding
- Insulating lime render
- Solid wall insulation
- Terraced house EWI
- Detached house EWI
- EWI for landlords
- EWI surveys
- All 24 services
Rules that apply in Farnham
- Planning
- On a house, external wall insulation is usually permitted development if the finish looks similar to the existing walls. Render or cladding on a house in a conservation area, National Park, National Landscape (AONB), the Broads or a World Heritage Site needs planning permission. Flats and maisonettes have no householder permitted development rights, listed buildings need listed building consent, and an Article 4 direction can remove rights locally.
- VAT
- Installing insulation in a home is zero-rated for VAT until 31 March 2027, then 5%.
Checked October 2026. Rules change, so we confirm them for your address at survey.
External wall insulation in Farnham: questions
How much should I budget for external wall insulation in Farnham?
Budget around £109–£175 per square metre of wall for the system and finish, plus scaffolding priced per house. The survey measures your walls in Farnham and fixes the total in writing.
Is VAT charged on external wall insulation in Farnham?
Not on installing insulation in a home at the moment: that's zero-rated until 31 March 2027, after which the rate is due to be 5%. Work on commercial buildings is standard-rated.
Do you cover Aldershot as well as Farnham?
Yes. From Farnham we also cover Aldershot, Fleet and Farnborough, and the rest of Surrey.