Extensions
Single-storey and double-storey rear and side extensions, side-return kitchen extensions and wrap-around extensions.
Builders in Windsor
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Loft and garage conversions
Roof-window and dormer loft conversions, and turning a garage into a room, office or annexe.
Renovations and structural work
Knocking through walls with steel beams, internal alterations, brickwork, repointing and general building repairs.
Before you get quotes for building work in Windsor, check which planning rules apply to your home. Planning applications go to the Royal Borough of Windsor and Maidenhead. Windsor has conservation areas covering the town centre, Inner Windsor, Trinity Place and Clarence Crescent, Mill Lane in Clewer Village, and Old Windsor, and many listed buildings. If your home is in one, or is listed, changes to the outside, such as new windows, doors or a roof covering in a different material, may need permission, and any work to a listed building may need listed building consent. Much of the land around the town is Green Belt, where extensions and outbuildings are more tightly controlled.
Flood risk matters too. If your home is in a flood risk area, including parts of Old Windsor and Datchet, a planning application for an extension may need a flood risk assessment. Check the flood risk for your address on GOV.UK before you commission drawings. Building the new floor level no lower than the existing one, and using flood-resilient materials low down, can reduce damage if water ever gets in.
Most building work in Windsor falls into a few types:
- Extensions and kitchen extensions on post-war family homes, such as those in Dedworth.
- Loft conversions with a rear dormer on Victorian and Edwardian terraces in Clewer and around the town centre.
- Renovating period townhouses, where matching the original brick, lime mortar, joinery and roof materials matters.
On terraced and semi-detached houses, work on or near a shared wall often needs a party wall agreement with your neighbours before it starts. Your building control officer or engineer will set the foundation depth for an extension, especially near trees.
When you compare builders, ask for itemised quotes on the same drawings. Check that each quote says who deals with building control and what the payment stages are, and never pay large sums upfront. Reviews on Trade Pilot are tied to real, invoiced jobs, so you can see how a builder has handled projects like yours.
How it works
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Tell us about the job
Check your Windsor postcode and describe what you need. Photos help.
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How Trade Pilot helps you hire in Windsor
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Posting a job and getting up to 3 quotes is free for homeowners. You choose who to invite round, or no one at all.
Frequently Asked Questions
Post your job on Trade Pilot with your postcode, drawings and photos, and up to 3 vetted builders covering Windsor can quote. Compare itemised quotes on the same drawings, and read reviews from real, invoiced jobs.
Many single-storey rear extensions fall under permitted development. Conservation areas, listed buildings, flats and the Green Belt have extra limits. Check with the Royal Borough of Windsor and Maidenhead.
Often, yes. A rear dormer is the most common way to add headroom on a terrace. In a conservation area, or on a listed building, check with the council first, and expect a party wall agreement with your neighbours.
Often, yes, but a planning application may need a flood risk assessment, and the design should keep floor levels and services above likely flood levels. Check your flood risk on GOV.UK first.
Often, yes. If you're building on or near a shared wall, or digging foundations close to a neighbour's, you normally need to serve notice under the Party Wall etc. Act 1996 before work starts.
Avoid large upfront payments. Agree stage payments tied to finished work, and get a written contract that sets out the scope, price and timings.
Yes. Posting a job and receiving quotes is free for homeowners, and you don't have to accept any quote.
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