External wall insulation in Plymouth
Homeowners in Plymouth look at external wall insulation for warmer rooms, lower heat loss and a new exterior in one job. Here is how it works, what it costs and which England rules apply.
Homes in and around Plymouth
Plymouth is in the PL1 postcode district. 1 other town we cover is within 25 miles.
Parts of Devon see high levels of wind-driven rain, so render specification and the details at sills and the roofline get extra attention.
Nearby towns we cover: Plymstock (2 miles).
External wall insulation prices in Plymouth
Guide prices for external wall insulation in Plymouth 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 Plymouth
- Mineral wool EWI
- Phenolic EWI
- Brick slip EWI
- Insulating lime render
- Bungalow EWI
- Terraced house EWI
- Park home insulation
- Social housing EWI
- EWI for landlords
- EWI repairs
- All 24 services
Rules that apply in Plymouth
- 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 Plymouth: questions
How much should I budget for external wall insulation in Plymouth?
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 Plymouth and fixes the total in writing.
Is VAT charged on external wall insulation in Plymouth?
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 Plymstock as well as Plymouth?
Yes. We cover Plymstock and the rest of Devon.