External wall insulation in London
Looking for external wall insulation in London? We survey homes across Greater London and the EC1A postcode district, measure every wall and give you a fixed price in writing before any work is booked.
Homes in and around London
London is in the EC1A postcode district. 6 other towns we cover are within 25 miles.
From London we also cover Westminster (1 miles away), Pimlico (1 miles) and Islington (2 miles).
Whatever the exposure of your street, the details at sills, eaves and the base of the wall are what keep an EWI system dry, and we draw them before work starts.
Nearby towns we cover: Westminster (1 mile), Pimlico (1 mile), Islington (2 miles), Camden Town (2 miles), Chelsea (2 miles), Chalk Farm (3 miles).
External wall insulation prices in London
Guide prices for external wall insulation in London 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 London
- Phenolic EWI
- Brick slip EWI
- Insulated cladding
- Insulating lime render
- Non-traditional houses
- Terraced house EWI
- Semi-detached EWI
- Detached house EWI
- Flats & low-rise blocks
- EWI repairs
- All 24 services
Rules that apply in London
- 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 London: questions
How much should I budget for external wall insulation in London?
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 London and fixes the total in writing.
Is VAT charged on external wall insulation in London?
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 Westminster as well as London?
Yes. From London we also cover Westminster, Pimlico and Islington, and the rest of Greater London.