Barnet · Design & Build
House Extensions in Barnet
Looking for extension specialists in Barnet? Cheshunt Build is a local design and build team covering High Barnet, New Barnet, Cockfosters, East Barnet and Hadley Wood. Single storey rear extensions, side returns, wrap-arounds and double storey extensions, matched to your home and built by one team.
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- Building Control approved
- 12-month guarantee
- Fixed price after a free site visit
Why house extensions work well in Barnet
Barnet ranges from Victorian and Edwardian terraces in New Barnet to large detached homes around Hadley Wood and Cockfosters, so projects run from smart loft conversions to major extensions and refurbishments. That makes Barnet a great place to extend into the garden or side return, and because we design and build in one team, your drawings are always buildable and your price is set early and honestly.
Planning and building control in Barnet
Barnet sits under Barnet Council. Many rear extensions are permitted development, though depth limits and conservation areas apply, and we handle the application either way. As a design and build team we prepare the drawings and manage the whole process for you, so there is one team accountable from first sketch to sign-off.
What it costs, and how to get a figure
A good quality single storey extension here typically runs from £2,500 to £3,000 per square metre at our standard finish, with kitchens and glazing on top. A luxury specification is priced individually after a site visit. Our online estimator gives you an itemised budget for your Barnet project in about a minute, emailed as a branded PDF, and we confirm a fixed price after a free, no-obligation site visit.
Helpful guides
Frequently asked questions
How much does an extension cost in Barnet?+
A good quality single storey extension here typically runs from £2,500 to £3,000 per square metre at our standard finish, with kitchens and glazing on top. A luxury specification is priced individually after a site visit. Use our instant estimator for a figure tailored to your specific project.
Do I need planning permission in Barnet?+
Many rear extensions are permitted development, though depth limits and conservation areas apply, and we handle the application either way. We check the position for your exact address under Barnet Council.
Which parts of Barnet do you cover?+
All of EN4 and EN5, including High Barnet, New Barnet, Cockfosters, East Barnet and Hadley Wood, plus the surrounding areas.
How do I get a quote?+
Use our instant estimator for an itemised budget in about a minute, then we confirm a fixed price after a free site visit.
Free instant quote
Get your itemised quote in 60 seconds
An indicative, itemised budget in about a minute, emailed straight to you as a branded PDF. We confirm a fixed price after a free, no-obligation site visit.
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