Flats and blocks · England
EWI for flats and blocks in West Sussex
Planning EWI for flats and blocks anywhere in West Sussex? We cover towns including Crawley and Worthing, and check planning and building control for each address. Freeholders and managing agents in West Sussex get a written specification and pricing they can share with owners.
- Free survey and fixed written price
- Guide price from £110 per m² + scaffold, 0% VAT
- Planning and building control checked for England
Free survey in West Sussex
Tell us the postcode and what you need.
What the job covers
- Mineral wool systems where building height or guidance requires them
- Cavity barriers and fire-stopping detailed at compartment floors
- One programme and one finish across the whole building
- Higher-risk buildings follow the Building Safety Regulator's process in England
- We work with managing agents on resident communication
What we look for in West Sussex
Homes across the South East range from inter-war semis and post-war estates, which are mostly cavity-walled, to older solid-walled cottages and Victorian town terraces.
Exposure to wind-driven rain varies across West Sussex: sheltered town streets fare better than walls on high ground or facing the prevailing weather, and the render, beads and cill details are chosen with that in mind.
For blocks in West Sussex, we start with height, storeys and the planning position, because those decide the system.
- Nation
- England
- Region
- South East
- Towns covered
- Crawley, Worthing, Bognor Regis, Littlehampton, Horsham, Haywards Heath, Chichester, Burgess Hill…
- Guide price
- From £110 per m² + scaffold · 0% VAT
England: planning and regulations
For houses, external wall insulation and render are often permitted development where the finish looks similar to the existing walls. Planning permission is usually needed in conservation areas, National Parks, National Landscapes, the Broads and World Heritage Sites (where cladding a house in stone, artificial stone, pebble dash, render, timber, plastic or tiles isn't permitted development), for flats and maisonettes, for commercial buildings, under an Article 4 direction, or where the look changes noticeably. Listed buildings need listed building consent.
Renovating more than half of a wall's area — insulating it, or stripping and re-rendering it — or more than a quarter of the building's whole external envelope brings in the energy requirements of Part L, so building control needs to be involved and the wall should reach about 0.30 W/m²K where that's technically, functionally and economically feasible.
Combustible materials are banned in the external walls of relevant buildings 18 metres and over (regulation 7(2)), and Approved Document B guidance also covers residential buildings with a storey 11 metres or more above ground. Higher-risk buildings go through the Building Safety Regulator.
Who needs to agree to EWI on a block?
The freeholder or management company commissions the work, but leaseholders usually pay through the service charge. In England and Wales, major works above the statutory threshold trigger the Section 20 consultation process before a contract is placed. We provide the specification and pricing you need for that consultation.
EWI for flats and blocks prices in West Sussex
| 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.
What happens next
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 West Sussex: questions
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 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.
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 you cover all of West Sussex?
Yes. We survey and quote EWI for flats and blocks across West Sussex, including Crawley, Worthing, Bognor Regis, Littlehampton, Horsham.
Do I need planning permission in England?
For houses, external wall insulation and render are often permitted development where the finish looks similar to the existing walls. We check your address before quoting.