Flats and blocks · West Sussex
EWI for flats and blocks in Worthing
Looking for EWI for flats and blocks in Worthing? We survey homes across Worthing and the BN11 area, then give you a fixed written price before any work starts. Freeholders and managing agents in Worthing get a written specification and pricing they can share with owners.
- Free survey in BN11 and nearby
- Guide price from £110 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Worthing
Postcode, service and a phone number is all we need.
Included as standard
- One programme and one finish across the whole building
- We work with managing agents on resident communication
- Planning permission is needed for flats and maisonettes
- Mineral wool systems where building height or guidance requires them

Local considerations in Worthing
We also cover Portslade and Littlehampton, close to Worthing. Worthing sits around 22 miles from Crawley. 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 Worthing, we start with height, storeys and the planning position, because those decide the system.
- Postcode district
- BN11
- County or area
- West Sussex
- Nation
- England
- Nearby
- Portslade, Littlehampton, Hove, Brighton
England: planning and regulations
For a house in Worthing, external insulation or render is often permitted development if it looks similar to the existing walls; conservation areas, flats, commercial buildings and listed buildings need permission or consent, so we check your address first.
If the work covers more than half of a wall, or a quarter of the building's whole envelope, it counts as renovating a thermal element, with a target of about 0.30 W/m²K where feasible.
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 Worthing
| 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.
From enquiry to finished wall
Enquiry
Send your postcode and a few details.
Measured survey
Walls, damp, eaves, cills and services recorded.
Written price
A fixed price with the specification attached.
Work and handover
Installed, inspected and documents handed over.
Flats and blocks in Worthing: 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 you work on high-rise buildings?
Tell us the height and number of storeys. Buildings in the higher-risk category have a separate regulatory route, and we'll say plainly if we're not the right contractor.
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 Worthing?
Yes — we survey and quote EWI for flats and blocks in Worthing (BN11) and nearby Portslade, Littlehampton and Hove, with a fixed written price before any work starts.