External wall insulation in Westminster
If you live in Westminster (W1A) and your walls are solid, system-built or simply cold, external wall insulation may be the most effective upgrade you can make without losing any room inside.
Homes in and around Westminster
Westminster is in the W1A postcode district, about 1 mile from London. 6 other towns we cover are within 25 miles.
We arrange surveys in Westminster (W1A) at a time that suits you, and cover neighbouring Pimlico, London and Chelsea too.
We photograph every hidden layer as it goes on, so you have a record of what's behind the finish on your Westminster home.
Nearby towns we cover: Pimlico (1 mile), London (1 mile), Chelsea (2 miles), Battersea (2 miles), Brixton (3 miles), Fulham (3 miles).
External wall insulation prices in Westminster
Guide prices for external wall insulation in Westminster 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.
The final figure depends on wall area, the number of windows and doors, the finish and how much work the roofline, sills and services need.
Popular services in Westminster
- Mineral wool EWI
- Wood fibre EWI
- Brick slip EWI
- Solid wall insulation
- Terraced house EWI
- Semi-detached EWI
- Flats & low-rise blocks
- EWI for landlords
- Failed EWI remediation
- EWI surveys
- All 24 services
Rules that apply in Westminster
- Building regulations
- Insulating more than half of a wall, or more than a quarter of the whole building envelope, counts as renovating a thermal element under the Building Regulations, so the wall should reach 0.30 W/m²K where that is technically, functionally and economically feasible, and building control must be involved.
- 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 Westminster: questions
How much should I budget for external wall insulation in Westminster?
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 Westminster and fixes the total in writing.
Do you cover Pimlico as well as Westminster?
Yes. From Westminster we also cover Pimlico, London and Chelsea, and the rest of Greater London.
How long will the work take in Westminster?
Two to six weeks on site for most houses, depending on size: bungalows are quicker, detached houses longer, weather allowing. Render isn't applied in rain or frost.