Side extension
Roof and loftHouse extensions in North London
Rear, side‑return and two‑storey, foundations to kitchen.
What's included
- Foundations and drainage
- Structure
- Roofing and glazing
- Inside the new room
Projects
All projectsSide extensionRoof and loftHow the job runs
01Site visit
We see the house and drawings.
02Quote
Written, priced stage by stage.
03Approvals
Planning, sign-off, party walls.
04The build
One team, one site contact.
05Handover
Snagging, certificates, keys.
Good to know
Permitted development or planning permission
Many single-storey rear extensions can be built under permitted development, and larger ones through the prior approval scheme. Side, wraparound and two-storey extensions, and anything in a conservation area, usually need planning permission. Your architect will confirm which route applies before drawings are finalised.
If the extension is built on or near a shared wall, party wall notices are needed. If it goes over a public sewer, the water company must agree a build-over arrangement first.
Can you do the kitchen as well as the extension?
Yes. Most of our extensions include the kitchen and the rest of the ground floor, which avoids a gap between the builder finishing and the kitchen fitter starting.
Do we need a structural engineer?
Yes for almost every extension, because the back wall of the house has to be supported on steel. The engineer's calculations are also needed for building control.
Often paired with
Planning an extension?
We visit, then send a written quote.