Flats and blocks · Greater London
EWI for flats and blocks in Carshalton
Need EWI for flats and blocks in Carshalton? Tell us about the property and we'll arrange a free survey and a written quote. Freeholders and managing agents in Carshalton get a written specification and pricing they can share with owners.
- Free survey in SM5 and nearby
- Guide price from £110 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Carshalton
Postcode, service and a phone number is all we need.
What the job covers
- We work with managing agents on resident communication
- Cavity barriers and fire-stopping detailed at compartment floors
- Planning permission is needed for flats and maisonettes
- Mineral wool systems where building height or guidance requires them
Homes and walls in Carshalton
We also cover Wallington and Sutton, close to Carshalton. London's housing includes a large stock of Victorian and Edwardian solid-wall terraces, inter-war semis and post-war blocks, and conservation areas cover many streets — so planning is often the first question for external work.
Much of Greater London sits in the lower wind-driven rain exposure bands, which keeps the choice of finishes wide — though hilltop, coastal and exposed gable walls can still need a tougher specification, so we check the actual site.
On mixed-tenure blocks in Carshalton, we agree access and resident notices with the managing agent before scaffold goes up.
- Postcode district
- SM5
- County or area
- Greater London
- Nation
- England
- Nearby
- Wallington, Sutton, Mitcham, Morden
England: planning and regulations
Before quoting in Carshalton, we check whether the property is in a conservation area, under an Article 4 direction or listed, because that decides whether changing the outside needs planning permission.
Building control applies once more than half of a wall is insulated or re-rendered, or more than a quarter of the whole building envelope, and your written quote says how that's handled.
On residential buildings with a storey 11 metres or more above ground, guidance points to non-combustible external wall materials, and combustible materials are banned in relevant buildings 18 metres and over, so we specify mineral wool systems there.
How disruptive is it for residents?
Most work happens from scaffolding outside. Residents may need to allow brief access to extend window cills, vents or flues from the inside. We provide a notice for residents covering dates, scaffold, and how to raise concerns.
EWI for flats and blocks prices in Carshalton
| Item | Guide price | Notes |
|---|---|---|
| Mineral wool system on a low-rise block | £110–£190 per m²0% VAT | Priced on survey |
| Scaffold and access | Priced per building | Includes licences where needed |
| Specification and pricing pack for consultation | Included with quote |
Confirmed by a fixed written quote after survey. 0% VAT: installing insulation in a home is zero-rated until 31 March 2027, so these figures are the total; 5% applies from 1 April 2027.
How it works
Get a guide price
Try the online quote tool for a ballpark figure.
Book the survey
A visit at a time that suits you.
Agree the quote
Nothing starts until you've signed the written price.
We do the work
Planned around weather, with you kept informed.
Flats and blocks in Carshalton: questions
Who pays for EWI on a leasehold block?
In England and Wales, usually the leaseholders through the service charge, depending on the lease, and the landlord must follow the Section 20 consultation process for major works.
Do flats need planning permission for EWI?
Yes. Permitted development rights for external alterations apply to houses, not flats or maisonettes, so an application is needed.
Can one flat have external wall insulation on its own?
Rarely. The outside walls are usually owned by the freeholder, the result would look patchy, and planning is unlikely. Whole-building schemes are the norm.
Do you cover Carshalton?
Yes — we survey and quote EWI for flats and blocks in Carshalton (SM5) and nearby Wallington, Sutton and Mitcham, with a fixed written price before any work starts.