Attached and integral garage conversions across Cheshire and Greater Manchester. Home offices, gyms, playrooms and annexes — fully insulated, damp-proofed and building-regs approved.
Pound for pound, converting an integral garage is the most affordable way to add usable square footage. The roof, the walls and the slab are already there — the work is insulation, damp course, front elevation rebuild and fit-out.
The common mistake is skipping the damp course and floor build-up because the existing garage slab looks flat enough. It\'s not. Garage floors sit below the house DPC, and converting without raising the floor and tying the DPC in is a rising-damp problem waiting to show up three winters later.
Front elevation rebuild, damp-proofing, insulation, electrics and heating — all handled in one programme, under one contract.
Check on roof structure, damp course level, and whether the front brickwork needs rebuilding or just in-filling.
Brick in-fill of the old garage door opening — matching the existing brick and bond so it doesn't look obvious.
UPVC or aluminium windows to match the rest of the house, plus glazed door where the elevation calls for it.
New DPC and DPM tying in to the existing house — garage floors are almost always below the house DPC and need raising.
Hardcore, DPM, PIR insulation and screed — or engineered floor cassettes where ground levels allow.
100mm PIR dry-lined to the walls, 50mm over the new ceiling, full cavity insulation where retrofit is possible.
New radiators tied back into the existing heating system — or underfloor heating on the new screed.
New circuit from the consumer unit, skimmed plaster walls and ceilings, decorated and trimmed before handover.
An integral single garage converted to a home office and study for a professional couple working from home. Front elevation rebuilt with brick-in-fill, new aluminium windows, underfloor heating and fitted oak joinery across the back wall. 6 weeks on site, building regs signed off and in use by the following Monday.
View full projectA single accountable team, start to finish. No handoffs, no subcontractor blame-games, no surprises.
We visit your property and discuss your vision, requirements, and budget.
Our team prepares designs and handles planning and building regulations.
You receive a detailed, transparent quote with no hidden costs.
Our trusted team delivers your project to the highest standard, on time and on budget.
Final inspection, snagging, and handover. Your project, fully certified.
What we answer most often on first site visits.
Most integral garage conversions are Permitted Development — they're changes within the existing building envelope. You'll still need Building Regulations approval, though. Conservation areas, Article 4 zones and some Cheshire council areas are exceptions — we check at the site visit.
A typical single-garage conversion to a habitable room with new insulation, damp course, electrics and plastering runs £18,000–£26,000. Adding a WC, shower or full en-suite takes the figure to £28,000–£42,000.
Most converted garages weren't being used for a car anyway — but you should check if your deeds require off-street parking and whether the front driveway already meets that requirement. In some streets, losing a garage affects insurance premiums too.
Not if it's insulated properly. We'd typically dry-line the walls with 100mm PIR insulation, insulate the floor build-up to 120mm, and insulate the new roof void. Underfloor heating or a new radiator off the central heating system takes care of the rest.
Yes, but using it as independent accommodation with its own entrance and kitchenette usually needs planning consent for a change of use. We'll walk you through the options.
Typical programme is 4–7 weeks on site. Integral garage conversions are quicker because the existing roof and walls are already there.
CDB have knowledge and experience they use wisely to achieve great outcomes. They are competent, experienced, knowledgeable, friendly, trustworthy, communicative, considerate, and hardworking.
Book a free site visit. We'll check what's feasible, flag any planning issues, and come back with a fixed-price quote and a realistic programme.