2026 guide prices
Garage conversion cost in Sheffield.
A garage conversion in Sheffield usually costs between £8k and £25k, depending on the garage and the room you want. Below are the published guide figures, what goes into the price and what moves it up or down. After a free survey we give you a fixed price with every line itemised.
Garage conversion prices by type of garage
- Single garage£8k – £15k
- Integral garage£10k – £14k
- Double garage£15k – £25k
These are the published UK guide figures for 2026. They cover a finished, habitable room. Ensuites, kitchens and detached garages that need services run across usually cost more.
Published UK guide figures for 2026. Your own price is fixed, line by line, after a free survey.
By conversion
Garage conversion costs for each type of conversion
Every guide has its own costs section explaining what changes the price for that conversion:
In the price
What a garage conversion price includes
Every quote we send lists these lines separately, so you can see where the money goes and compare like with like.
- 01
Footing and front wall
Where the garage door stood, a concrete footing goes in and a new cavity wall is built on it, faced in brick, stone or render to match your house.
- 02
Window
A double-glazed window in the new wall, sized for daylight and, in a bedroom, for escape. The style matches the windows already on the house.
- 03
Floor
A damp-proof membrane, rigid insulation and a screed, built up so the new floor meets the hall with no step down into the room.
- 04
Insulation
Lining and insulating the existing walls and the ceiling to meet the energy rules in Part L of the Building Regulations.
- 05
Heating and electrics
A radiator connected to your boiler or an electric heater, plus new sockets, lighting and switches, tested and certified.
- 06
Finish and approvals
Plastering, skirting, an internal door, and the Building Regulations application, inspections and completion certificate.
Why prices vary
What makes a garage conversion cost more or less
Two garages on the same street can cost different amounts. These are the things that make the difference, all checked at the free survey.
- 01
Size of the garage
A double garage has twice the floor, ceiling and wall to insulate and finish, and usually two openings to fill.
- 02
What the front wall is made of
Natural stone facing to match a gritstone house costs more than brick or render, and is common in the west of Sheffield.
- 03
The floor level
A deep step down from the house means more build-up to bring the floor level, and sometimes a new slab.
- 04
Water and drainage
Ensuites, kitchens and utility rooms need supply and waste pipes routed to the drains, which adds plumbing and sometimes a pump.
- 05
Openings into the house
Knocking through to make a wider opening or join the room to a kitchen can need a steel beam and structural calculations.
- 06
Distance from the house
A detached garage needs power, water and heating run across, usually in a trench, before the room can be used.
How we price
How we work out your fixed garage conversion price
A survey, not a guess
We visit, measure the garage and check the slab, the walls, the roof and where the services run. We also talk through the room you want, because a bedroom, an office and a kitchen cost different amounts.
Nobody can give an accurate price for a garage conversion from a photo, which is why the survey is free and comes first.
Every line written down
Your quote lists each part of the job with its own price: the wall, the window, the floor, insulation, heating, electrics, finish and the Building Regulations fees. It is fixed for the work described.
If you change something during the build, we price the change before we do it, so the total never surprises you.
Value
Is a garage conversion worth the cost?
For most Sheffield households a garage conversion is the least expensive way to add a proper room, because the walls, roof and floor are already standing.
An extension needs foundations, walls and a roof before the inside can even begin. Moving house means stamp duty, fees and the upheaval of a move.
A converted garage that is signed off by Building Control counts as part of the house when you sell. Keep the completion certificate safe, because a buyer's solicitor will ask for it. See every type in our garage conversions guide.
Questions
Garage conversion cost: Sheffield FAQs
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01How much does a garage conversion cost in Sheffield?
Published UK guide figures for 2026 put a single garage at £8k to £15k, an integral garage at £10k to £14k and a double garage at £15k to £25k. Where yours sits depends on its size and condition and on the room you want. After a free survey you get a fixed, itemised price.
-
02Why is there such a wide range for a single garage?
Two single garages can need very different amounts of work. One may have a sound, level slab and block walls; another may need the floor built up, a new footing, a stone-faced front wall and a roof upgrade. The finish matters too: a plain bedroom costs less than one with an ensuite.
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03Is VAT included in the guide figures?
The figures are general guides published for the UK, not our prices, so treat them as a starting point. Your itemised quote states clearly what is included, including VAT, so there is nothing to work out at the end.
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04Are Building Regulations fees included in the quote?
We make the Building Regulations application to Sheffield City Council for you and list the fees as a line in your quote, so you can see exactly what they are and nothing is added later.
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05Is converting a garage cheaper than building an extension?
Usually, yes, because the walls, roof and floor already exist. An extension needs new foundations, walls and a roof from scratch before any of the inside work starts. A garage conversion reuses the shell and replaces the door with a wall and window.
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06What could make the price change after the quote?
The price is fixed for the work described. If you ask for changes during the build, such as moving the window or adding sockets, we price them before doing them. If the survey cannot see something, such as the state of a hidden drain, the quote says so up front.
Free survey
Get a fixed price for your garage
Tell us about the garage and the room you want. We will survey it for free and send a fixed, itemised price.
Or call 07930 368713 or email enquiries@garageconversionssheffield.co.uk
