Extensions over a garage in Sion Mills
Our extensions over a garage service in Sion Mills covers everything: measured survey, design, planning or permitted development checks, structural design, building control and the build itself.
What we'd confirm first for a project in Sion Mills.
- Postcode districts
- BT82
- County / area
- County Tyrone, Northern Ireland
- Price region
- Northern Ireland
- Guide price
- £27,500–£40,500 (£1,540–£2,240 per m²)
- Approval route
- Planning permission is needed: permitted development side extensions in Northern Ireland can't be more than 4 m high, which rules out two storeys.
- Nearest towns
- Strabane (2.5 miles), Castlederg (7.4 miles), New Buildings (12.8 miles)
- Distance to Omagh
- about 14.7 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.
Around Sion Mills we also work in Strabane, Castlederg and New Buildings, and across the rest of County Tyrone. Postcode district in and near Sion Mills: BT82.
What it costs in Sion Mills
Using our Northern Ireland rates, an extension over a garage with 3 m × 6 m of new first-floor space (18 m²) comes to about £27,500–£40,500, including VAT. Bigger or more glazed designs cost more per m². 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 | £1,420–£2,060 per m² | £25,500–£37,000 |
| Standard | £1,540–£2,240 per m² | £27,500–£40,500 |
| Premium | £1,850–£2,690 per m² | £33,500–£48,500 |
Planning and building control in Sion Mills
In Northern Ireland, permitted development for two-storey work is set out for rear extensions, so building over a side garage normally needs a planning application, which costs £347 per dwelling. Councils aim for an average of 15 weeks for local applications. Building control approval is also needed, including fire separation if the garage stays in use.
Approval in Northern Ireland: Planning application for works to a house: £347. Councils aim to decide local applications within an average of 15 weeks; many take longer.
Building control: Building control approval from the local council under the Building Regulations (Northern Ireland), using the Technical Booklets.
Design points for Sion Mills homes
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.
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.
How we'd run your project
Free site visit
We visit your home in Sion Mills, look at the structure, access and boundaries, and talk through what you want the new rooms to do.
Drawings, then consent
We draw the scheme, check it against the rules in Northern Ireland, and take it through the right consent with the council.
Structure and building control
A structural engineer sizes the foundations and steels, and we get building regulations approval before work starts.
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 Sion Mills
Who handles building control for a project in Sion Mills?
We handle it as part of the project. What's needed in Northern Ireland: building control approval from the local council under the Building Regulations (Northern Ireland), using the Technical Booklets. We prepare the drawings and the engineer's calculations, book the inspections and pass you the completion paperwork at the end.
How much does an extension over a garage cost in Sion Mills?
Our guide for Northern Ireland, which covers Sion Mills, is £1,540–£2,240 per m² including VAT. A typical project with 3 m × 6 m of new first-floor space (18 m²) comes to about £27,500–£40,500. 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 Sion Mills?
Sion Mills is in Northern Ireland. Planning permission is needed: permitted development side extensions in Northern Ireland can't be more than 4 m high, which rules out two storeys.
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
Close to Sion Mills? We work across the area, including:
Other extensions in Sion Mills
- Rear
- Side
- Wraparound
- Part two-storey
- First floor
- Semi-detached
- Detached
- Kitchen and bedrooms
- Bedroom and en-suite
All two-storey extension services in Sion Mills · Extensions over a garage across County Tyrone
Send us your postcode and a few details. We'll get back to you to arrange a visit and talk through your options.