Have plans already? Bring them — we'll quote against exactly what's drawn.
Indicative guide prices
Single-storey
£2,500–£3,200/m²
Double-storey
£2,200–£2,800/m²
Loft conversions
£1,800–£2,600/m²
Garage conversions
£1,400–£2,000/m²
Your project
Fixed written quotation
What we convert
Types of garage conversion
Integral garage
Sits inside your home's existing footprint. The least structural work, and the most cost-effective route to an extra room.
Attached garage
Shares a wall with the house but has its own roof and exposed walls, so it needs proper insulation and thermal upgrading.
Detached garage
A full thermal upgrade plus running services out from the house. Ideal for a home office, gym or annexe.
Partial conversion
Keep some storage or utility space and convert the rest. Sensible if you don't want to lose the whole garage.
Straightforward to work with
How a SwiftBrick project works
1. Plans, or no plans yet
2. Site assessment & detailed quote
3. Professional build, personally managed
4. Building Control sign-off & handover
Site assessment & detailed quote. Every quote is based on a personal site visit from Luke and a proper look at your plans. No vague estimates, no surprise extras. If there's a realistic possibility of additional cost, it's flagged upfront — not sprung on you halfway through.
Professional build, personally managed. Your project is managed on site by a Chartered professional, supported by a hand-picked team of experienced tradespeople. You get a direct number. The job runs to programme — or you're told why.
Building Control sign-off & handover. We don't call a job finished until Building Control has signed it off. You get a full debrief, the documentation, and an insurance-backed guarantee.
No plans yet? Luke offers a paid pre-construction site visit and consultation for a nominal fee — feasibility and honest advice before you commit serious money.
Good to know
Common questions
Do I need planning permission?
Usually not. Most garage conversions fall under permitted development. We'll confirm your specific situation before you commit to anything.
Does it need Building Control sign-off?
Yes, always. Structure, insulation, damp-proofing, fire safety and ventilation all have to be certified. We handle the application and the inspections.
What does a garage conversion cost?
We price garage conversions at £1,400–£2,000 per m². A half or partial conversion typically starts around £12,000 including VAT. A full single garage generally runs £21,000–£30,000, depending on spec, glazing and whether you're adding plumbing. You get a fixed written quotation after a site visit — not a range.
How long does it take?
Typically two to four weeks. Longer if there's plumbing, drainage or structural work involved.
Is it worth doing?
It's normally the cheapest way to gain a proper room, because the foundations, walls and roof already exist. You're upgrading a structure you already own rather than building a new one.
See it done
Watch a garage door become a window
The garage door coming out and a window going in — the moment a garage stops being a garage.
Start your project
Thinking about converting your garage?
Tell us what you want the space to become. We'll visit, assess it properly, and come back with a clear itemised written quote.
