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Brighton · East Sussex

Cavity wall insulation for flats in Brighton

Flats share their outer walls, so cavity wall insulation is normally done for the whole block at once with the freeholder's agreement. We cover Brighton and the wider BN1 postcode district, with the survey, result and fixed price all in writing.

Free survey in Brighton

Covering Brighton and the BN1 district. Tell us about the property and we will arrange a free survey and a fixed price.

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We use your details only to answer this enquiry and arrange your visit, sharing them only with the registered installer we appoint for your job and the providers named in our privacy notice. No marketing lists, no cold calls.

Cavity wall insulation for flats for Brighton properties

If your property is in Brighton or the BN1 district or nearby Hove, Rottingdean and Seaford, it is within our East Sussex coverage. Brighton is one of the main towns we cover in East Sussex.

For commercial buildings in Brighton, the survey also considers building use and fire requirements before a material is specified. For landlords and managing agents in Brighton, we survey in batches and return a result sheet and fixed price per address.

Before any material is chosen, exposure is checked. East Sussex has a mix of moderate and more exposed sites. Hilltop, coastal and west-facing walls take the brunt of wind-driven rain, so the survey records exposure for each elevation before a material is chosen.

As for paperwork, in Brighton filling a cavity is notifiable building work and needs a building notice or competent-person self-certification.

Funding in England

In England, ECO4 runs to 31 December 2026 and Warm Homes: Local Grant supports low-income households through councils.

Sources: GOV.UK: extending the ECO4 end date, government response; GOV.UK: Warm Homes Plan.

Fire and height

For blocks, the material must suit the building's height and use. Non-combustible mineral wool is the usual choice; we confirm the system and its certificate limits in writing.

What is included in Brighton

  • Leaseholder information sheet
  • Block survey
  • Freeholder and agent coordination
  • Per-flat pricing

Guide prices for Brighton

Cavity wall insulation for flats guide prices
Cavity wall insulation for flats guide pricesGuide price
Per flat, whole-block fill (low-rise)£495–£995

No VAT is charged on installing insulation in homes until 31 March 2027 (then 5%). Guide ranges only: the fixed price is confirmed in writing before any work starts, and anything that could not be seen at survey is agreed with you first.

The steps for cavity wall insulation for flats in Brighton:

  1. Send your details

    A minute online, or call the free number.

  2. We check the walls

    Construction, cavity width, debris, damp and wind-driven rain exposure.

  3. You decide

    Plain-English result and a fixed price, with no pressure to book.

  4. Job done properly

    Holes made good, paperwork handed over, guarantee details confirmed.

Last reviewed 19 October 2026.

Cavity wall insulation for flats in Brighton: questions

Do you cover Brighton?

Yes. Brighton and the BN1 postcode district are within our East Sussex coverage, along with nearby Hove and Rottingdean.

Which building regulations route applies in Brighton?

Brighton is in England, so filling a cavity is notifiable building work and needs a building notice or competent-person self-certification. We confirm the route in writing on your quote.

Is there VAT on cavity wall insulation for flats in Brighton?

Installing insulation in a home is currently zero-rated for VAT until 31 March 2027, then 5%. Commercial buildings are standard-rated.

How soon can you visit in Brighton?

We arrange dates when you get in touch. Availability varies through the year, so we give you real dates rather than a promise on the website.

Nearby towns

Book a free survey in Brighton

Free survey with an install quote. Written result. Fixed price before any work.