House extension in Barnet. £1,650 fixed.
Plans, building regs and structural calcs for your single-storey extension, with drainage and foundation design included.
Lowest price in London.
House extension drawings for Barnet homes.
Barnet's 1930s semis and suburban houses, from Finchley to Whetstone, usually have the plot and roof to take a sizeable extension or loft under permitted development.
We cover Finchley, Whetstone, Edgware and the rest of Barnet, with the same fixed £1,650 price wherever you are in the borough.
One fixed price, the whole pack.
Fixed price does not include the £199 application management fee. Larger or non-standard projects are priced individually after the site visit.
Do you need planning permission?
Single-storey rear extensions up to the standard size limits usually go under permitted development. Side and wrap-around extensions, conservation areas and flats are different, and where a planning application is required we manage and submit it for you.
Much of Barnet is suburban with strong permitted-development potential, though conservation areas around the older villages are the exception. We confirm your address before you commit.
We confirm exactly which applies to your address before you commit to anything. No guesswork, no surprises.
From postcode to build-ready.
Tell us your postcode
Drop your postcode and project into the quote form. You get your fixed price on screen in about 30 seconds, no quote-after-a-call.
We survey and draw
A qualified designer visits, measures up, and produces your full drawing pack and structural calcs. 14 working days as standard.
Submitted and ready to build
You get the building regs pack for Building Control, and where a planning application is needed we manage and submit it for you.