Barnet · EN4 · EN5 · N20
House extensions in Barnet.
Additions that read as if they were always there.
Why Ushii in Barnet
Ushii delivers extension work across Barnet (EN4 · EN5 · N20) with directly employed trades. Not a broker, not a list of numbers passed to whoever is free that week. The carpenters, roofers, electricians and gas engineers on your Barnet site are on our payroll, which is why programmes hold and standards stay consistent from strip out to snagging.
Barnet is a substantial family-house market. Hadley Wood, Totteridge Village and Cockfosters carry some of the largest detached houses in North London, and the borough's planning department is used to well-drawn extensions and basement schemes. Our teams are drawn from neighbouring Enfield and work across the borough on whole-house refurbishments, side and rear extensions and lower-ground reconfiguration.
North London boroughs vary widely on permitted development, roof extensions and rear additions. We confirm what your specific street allows before drawings are paid for.
The best extensions do not announce themselves. Brick coursing lines up. Ridge heights sit down. New glazing frames the garden without stealing focus from the original house. We build extensions the way conservation officers wish everyone did.
What the work covers
House Extensions for Barnet properties.
Feasibility
Planning constraints reviewed alongside your brief before drawings begin.
Coordination
Party wall, structural engineer and building control managed on your behalf.
Craft
Traditional trades and modern envelope detailing working together.
Common questions
House extensions in Barnet, answered.
How much does a extension cost in Barnet?
Cost follows scope, access and the condition of the building rather than the postcode. After a survey in Barnet we issue a fixed, itemised price so you can see exactly what each element of the extension carries. There are no provisional sums hidden in the back pages.
Do you work on hadley wood and cockfosters detached family houses in Barnet?
Regularly. Hadley Wood and Cockfosters detached family houses, Totteridge Village and Whetstone houses, High Barnet Georgian and Victorian terraces all feature in our Barnet workload, and each one is surveyed on its own terms before we price anything.
Which areas near Barnet do you cover?
We work across Enfield, Cockfosters, Hadley Wood, Totteridge, Whetstone, Finchley and the wider London area, with a directly employed team rather than local trades brought in for the day.
Do we need planning permission?
Many rear extensions fall under permitted development. Anything on a listed building, in a conservation area or beyond PD limits will need consent. We assess this at feasibility.
How do you match old brickwork?
We take physical samples to a handmade brick supplier and dry-lay panels for you to approve before ordering.