Berkshire
Builders in Windsor
Windsor sits inside the Royal Borough of Windsor and Maidenhead, which has 27 designated conservation areas. In and around Windsor they include Inner Windsor, Trinity Place/Clarence Crescent, Windsor Town Centre and Eton. We build extensions, loft conversions, new homes and renovations across Windsor, Eton, Old Windsor and Datchet, with fixed-price contracts and a 15-year structural warranty.
Windsor at a glance
- Planning authority
- Royal Borough of Windsor and Maidenhead
- Postcode districts
- SL4
- From our office
- 11 miles
Local knowledge
Building in Windsor
Verified reviews from homeowners close to or in Windsor are on our reviews page.
Planning here is decided by Royal Borough of Windsor and Maidenhead. What we check before designing anything:
- Planning applications in Windsor are decided by the Royal Borough of Windsor and Maidenhead, which publishes its conservation areas. Source : Royal Borough of Windsor and Maidenhead: conservation areas
- The Royal Borough of Windsor and Maidenhead states that there are 27 designated conservation areas in the borough. Source : Royal Borough of Windsor and Maidenhead: conservation areas
- The Windsor ones it lists are Inner Windsor, Trinity Place/Clarence Crescent and Windsor Town Centre, which is divided into Bachelors Acre, Castle and Royal Mews, Historic Core and High Street, Retail Core, Riverside, and Sheet Street and Park Street. Eton is listed as Eton North and Eton South. Source : Royal Borough of Windsor and Maidenhead: conservation areas
- The Planning Portal says that on land in a conservation area every side extension needs householder planning permission, so does any rear extension of more than one storey, and the work cannot include cladding the exterior. Source : Planning Portal: planning permission for extensions
Reviews
What homeowners say on Google, MyBuilder and Trustpilot
Reviews from homeowners across London and the Home Counties who have worked with us.
“Brits Construction has built our kitchen extension and refurbished the ground floor. Syed and his team had been really efficient in building the extension. Syed's experie…”
Lamiaa · Trustpilot · Jan 2026
“We hired Brits Construction to complete a single story extension on our home. Overall, we are very satisfied with the final result and the quality of the construction wor…”
Alex Gray · Google · Nov 2025
“We hired Brits Construction to carry out a single-story extension on our home, and we couldn't be happier with the final result and the overall quality of the work. Syed…”
James Swinden · Trustpilot · Nov 2025
Reviews
What homeowners in Windsor say
What homeowners in and around Windsor say about working with us.
“Our Edwardian house needed sympathetic work. They repaired the original floorboards and plaster mouldings instead of ripping them out.”
Claire, Old Windsor
Period Renovation · Jan 2024
“Really pleased with our single-storey extension. Good communication from start to finish and the brickwork matches the house perfectly.”
Paul, Datchet
Rear Extension · Jun 2025
“Really happy with the dormer loft. They explained the planning side clearly and the stairs fit in far better than we expected.”
Nadia, Clewer
Loft Conversion · Nov 2026
Our work
Projects we've built in Windsor
Period & Listed Buildings
Windsor
Rear Extensions
Windsor
Loft Conversions
Windsor
Coverage
Windsor and nearby
Windsor is about 11 miles from our Harrow office, within the 20 miles we cover.
FAQ
Building in Windsor: your questions
Yes. We work across Windsor, including Windsor, Eton, Old Windsor, Datchet, Clewer and Dedworth, covering the SL4 postcodes. It is about 11 miles from our Harrow office, so surveys and site visits are easy to arrange.
The Royal Borough of Windsor and Maidenhead is the planning authority and publishes its conservation areas. Applications here are decided by Royal Borough of Windsor and Maidenhead.
The Royal Borough of Windsor and Maidenhead is the planning authority and publishes its conservation areas. We check your address against the council's maps before design starts.
If your home is in a conservation area, yes: the Planning Portal says a side extension on that land always needs householder planning permission. Windsor has several, including Inner Windsor and Windsor Town Centre, so we check your address first.
Planning a project in Windsor?
Book a free site survey and get a fixed-price quote within 5 working days.