Rear extensions
Open up the back of the house for a more useful kitchen, dining area and connection to the garden.
House extensions
House extensions in Bristol
Create the kitchen, family space or extra room your current home is missing—without losing what already makes it feel like home.
Free home visit · Clear written quote · Bristol-based team
The job
What we can take care of.
Side returns
Make narrow, awkward ground-floor layouts feel wider, lighter and easier to move through.
Two-storey additions
Add space across two floors where the property, planning position and budget make it sensible.
Whole-room completion
Structure, roof, glazing, services and internal finishes can be coordinated through one build.
The difference
Most of an extension is buried before you ever see it.
Once the walls are plastered, you can’t see any of it. That’s what makes it easy to leave out. Here’s what a cheaper quote often drops.
How it usually gets done
Foundations dug to the depth that worked on the last job.
How we do it
We dig your foundations to suit the ground under your house. We check it first, especially near trees, clay or drains.
How it usually gets done
A steel sized by eye, because “that’ll hold”.
How we do it
An engineer works out the size of the steel. We fit it with the right supports underneath, the way the drawings say.
How it usually gets done
Building Control called at the end, or not at all.
How we do it
We tell Building Control before we start and book them in at each stage. Nothing gets covered up before someone has seen it.
How it usually gets done
A bead of mastic where the new roof meets the old wall.
How we do it
We fit proper trays, damp proofing and lead flashing at every join. Joins are where extensions let water in.
How it usually gets done
Whatever insulation is on the van that week.
How we do it
Insulation done to today’s rules, with the cold spots designed out. Your new room shouldn’t be the cold one you stop using.
How it usually gets done
You chase the paperwork yourself, months later.
How we do it
You end up with a completion certificate in your hand. Your buyer’s solicitor will ask for it one day.
Why BCHC
A calmer way to improve your home.
Start with the outcome
We begin with what is frustrating about the current house, not with a predetermined extension shape.
Written scope
Key inclusions, exclusions and assumptions are set out before you decide to proceed.
Local, reachable team
You deal with the people responsible for the work, not a distant call centre or rotating sales team.
On price
What you’re actually paying for.
The cheap quote and the good quote are rarely the same job.
Ask us round to look at the job. Then ask every other quote you get what’s actually in the price.
We’ll come out, look at it properly, and write down what we’ll do and what we won’t. You’ll know what you’re paying for before you decide.
Three quotes on a kitchen table rarely differ by profit. They differ by what’s been left out. The checks, the prep, the certificates — none of it shows up in a finished photo. You find out years later, when something fails and nobody comes back.
Good to know
Questions before you start.
How much does a Bristol extension cost?
Size alone is not enough to price it. Structure, ground conditions, glazing, services, kitchen specification and access all affect cost. We quote after understanding the actual property and scope.
Do I need planning permission?
Some extensions may qualify as permitted development; others require planning. Property type, previous work and the proposed size all matter, so the route should be checked for your specific home.
What should happen before building starts?
The design, permissions, structural information, building-control route, party-wall position and build scope should be understood before site work begins.
Give your home room to breathe.
Arrange a free, no-obligation home visit with Josh & Rich. We’ll listen first and follow up with a clear written quote.