Extensions over a garage in Easton-in-Gordano
If you live in Easton-in-Gordano and need more room without moving, an extension over a garage is worth a serious look. We handle the drawings, approvals, structure and build.
Before you start in Easton-in-Gordano, here's what applies.
- Postcode districts
- BS11
- County / area
- Bristol, England
- Price region
- South West England
- Guide price
- £32,500–£47,500 (£1,800–£2,630 per m²)
- Approval route
- Planning permission is needed: in England, permitted development only allows single-storey extensions to the side.
- Nearest towns
- Portishead (3 miles), Nailsea (3.9 miles), Bishopsworth (5.4 miles)
- First visit
- Free, no obligation
About an extension over a garage
An extension over a garage is a new first-floor room built on top of an existing attached garage, usually a bedroom, en-suite or study. It uses a footprint you already have, so it adds floor space without taking any garden. The garage walls and foundations often need strengthening or replacing to carry the new floor.
We cover Easton-in-Gordano (BS11) and the places around it, including Portishead (3.0 miles), Nailsea (3.9 miles) and Bishopsworth.
What it costs in Easton-in-Gordano
For budgeting in Easton-in-Gordano, allow around £32,500–£47,500 for an extension over a garage with 3 m × 6 m of new first-floor space (18 m²). That's based on £1,800–£2,630 per m² including VAT for South West England. These are guides, not quotes. Ground conditions, steelwork and access can move the figure either way.
| Spec | Per m² | 3 m × 6 m of new first-floor space (18 m²) |
|---|---|---|
| Essential | £1,660–£2,420 per m² | £30,000–£43,500 |
| Standard | £1,800–£2,630 per m² | £32,500–£47,500 |
| Premium | £2,160–£3,150 per m² | £39,000–£56,500 |
Planning and building regulations in Easton-in-Gordano
In England, most garages sit beside the house, so building over one makes a two-storey extension beyond a side wall, which always needs planning permission. If the garage is at the rear, the 3 m and 7 m rules for two-storey rear extensions apply, measured from the original house. A householder application costs £548 (or £575 for applications made from 8 December 2026).
Approval in England: Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
Building regulations: Building regulations approval (full plans recommended) from the council or a registered building control approver, with a completion certificate at the end.
Design points for Easton-in-Gordano homes
Matching the house
A room over a garage usually sits beside the front of the house in full view, so roof form, ridge height, windows and brick matter. Setting the front wall and ridge back slightly from the main house usually helps it look as if it belongs.
Checking the garage foundations
Garages are often built on shallow strip footings sized for a single-storey wall and a light roof. A trial hole shows their depth and condition, and the engineer decides whether they can carry two storeys or need underpinning or new foundations inside the garage.
How we'd run your project
Start at your house
We come to your home in Easton-in-Gordano, measure up, check the ground floor walls and roof structure, and note anything near the boundaries.
Drawings and permission
Our designers produce plans and elevations, then we take care of planning or permitted development checks with the council covering Easton-in-Gordano.
Engineer it
Foundations sized for two floors, steels for any openings, and building control approval, all before anyone starts on site.
Build and hand over
We manage the build from groundworks to decoration-ready finish and hand over with the completion paperwork.
Questions about extensions over a garage in Easton-in-Gordano
How much does an extension over a garage cost in Easton-in-Gordano?
Our guide for South West England, which covers Easton-in-Gordano, is £1,800–£2,630 per m² including VAT. A typical project with 3 m × 6 m of new first-floor space (18 m²) comes to about £32,500–£47,500. Design and approval fees are extra, and we fix the build price in writing once the design is agreed.
Do I need planning permission for an extension over a garage in Easton-in-Gordano?
Easton-in-Gordano is in England, so England planning rules apply. Planning permission is needed: in England, permitted development only allows single-storey extensions to the side. If in doubt, a lawful development certificate or a planning application gives you certainty before you build.
Which postcodes do you cover around Easton-in-Gordano?
We cover Easton-in-Gordano (BS11) and nearby places including Portishead, Nailsea and Bishopsworth, plus the rest of Bristol. The first site visit is free.
Can my garage take a room on top?
Sometimes, but it needs checking. Many garages are built on shallow footings with thin walls, designed only for a single storey. We dig a trial hole and inspect the walls, and the structural engineer decides whether to reuse them, strengthen them, underpin the footings or build new foundations inside the garage.
How do I get into a room over the garage?
Usually through a new opening off the existing landing or a bedroom, so the stairs stay where they are. If the floor levels do not match, a step or two may be needed inside the new room. Where a landing opening is not practical, a new stair from a converted garage is an option.
Nearby
Other towns near Easton-in-Gordano:
Other extensions in Easton-in-Gordano
- Rear
- Side
- Wraparound
- Part two-storey
- First floor
- Semi-detached
- Detached
- Kitchen and bedrooms
- Bedroom and en-suite
All two-storey extension services in Easton-in-Gordano · Extensions over a garage across Bristol
Book a free site visit in Easton-in-Gordano and we'll tell you what's possible, what approvals you need and what the design stage would cost.