(2026 prices · Greater Manchester)
Most single garage conversions in Greater Manchester cost around £9,000 to £17,000. Here's what drives the price, what's included as standard, and a quick estimator to see where yours might land.
Convert Your Garage
Garage conversion · Greater Manchester
Included as standard✓
TotalFixed price, after your free survey
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(Price guide)
Guide prices for Greater Manchester, based on typical projects. Every home is different, so you'll get a fixed, itemised price after a free survey.
A new room at the front, storage kept at the back.
£7,000 – £11,000
Already inside the house, so often the simplest.
£9,000 – £14,000
Our most popular conversion.
£11,000 – £17,000
Bedroom plus shower room, toilet and basin.
£16,000 – £24,000
Room for a bedroom and ensuite, or two spaces.
£16,000 – £28,000
Garden room, office or studio, with new services run out.
£18,000 – £32,000+
Self-contained, with a kitchenette and shower room.
£28,000 – £40,000+
(Cost estimator)
Tick what fits your project and you'll see a guide range straight away. It's based on the prices above, not a quote.
Guide range
£11,000–£17,000
Single garage → bedroom, standard finish
A guide based on typical 2026 Greater Manchester projects. Your fixed price comes after a free survey.
Get a fixed price for this(What affects the price)
Integral garages are already part of the house, so they're usually the simplest. Attached and detached garages need more work to bring them up to living standard, and a double gives you twice the floor area to insulate, plaster and heat.
Garage floors are often lower than the house. Raising and insulating the floor is standard, but the new front wall needs a sound footing. If the existing base isn't suitable, extra groundwork adds to the cost.
The garage door is replaced with an insulated cavity wall, a damp-proof course and a window. Matching brick and a larger or feature window cost more than a standard opening.
Water and drainage are the biggest single add-on. An ensuite usually adds around £5,500 to £9,000, mostly depending on how far the new waste pipe has to run.
Every conversion gets new sockets, lighting and a radiator on your heating. If the boiler or fuse board is in the garage, we box it in neatly, and an older consumer unit may need upgrading.
Roof lights, bi-fold or sliding doors, built-in storage, flooring and decoration all change the final figure. You choose the finish; we price each item clearly.
Every conversion needs Building Regulations approval. We prepare the application, arrange the inspections and show any Building Control fees in your quote. Most conversions don't need planning permission, so there's usually no planning fee.
(Conversion vs extension)
Almost always. A garage already has the expensive parts: foundations, walls and a roof. You're converting space you already own instead of building it from scratch.
Garage conversion
Single-storey extension
Thinking about more space altogether? We build home extensions too,.
(Return on investment)
Usually, yes. In most Greater Manchester streets an extra bedroom or a proper home office is worth more to buyers than a garage full of storage, especially where cars already live on the drive.
Two things protect that value: a conversion that feels like part of the house, not an afterthought, and a Building Regulations completion certificate. Buyers' solicitors will ask for it, and we hand it over with every conversion, backed by a 10-year warranty.
Want to see what's possible? Browse our garage to bedroom conversions, home office conversions or conversions with an ensuite.
Most single garage conversions in Greater Manchester cost around £9,000 to £17,000 in 2026. Integral garages sit at the lower end; an attached garage turned into a bedroom or office is typically £11,000 to £17,000.
A double garage conversion typically costs £16,000 to £28,000. Turning a double garage into a self-contained annexe with a kitchenette and shower room is usually £28,000 to £40,000 or more.
Adding an ensuite or shower room usually adds around £5,500 to £9,000, depending on the layout and how far the new drainage has to run.
Usually, yes. A garage already has foundations, walls and a roof, so a conversion typically costs a fraction of building the same space as a new extension, and it's much quicker.
We handle the Building Regulations application and every inspection, and any Building Control fees are shown clearly in your quote. You receive the completion certificate at the end.
Usually not, because most garage conversions are permitted development and don't need planning permission. We check at your free survey and tell you if an application is needed.
Book a free survey. We measure up, talk through what you want, and give you a fixed, itemised quote with no obligation.
