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Garage door opening filled in and the room fitted out as an office
Rutland · Stamford · Oakham

Garage conversions

A garage conversion turns a garage into a warm, habitable room: the floor insulated and raised, the door opening built up with a window or door, walls and roof insulated, and heating and electrics brought up to standard, all signed off under building regulations..

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A full single garage conversion typically costs £14,000–£19,000, and a part conversion to a utility room or store starts from about £9,500, with the building control fee paid to the council.

Full conversion
£14,000–£19,000
Part conversion
From £9,500
Building regs
Always needed
Planning
Not usually needed

Our 2026 guide prices. Your fixed price comes in writing after the site visit. Council fees checked October 2026.

Garage conversions

What the job involves

A garage conversion turns a garage into a warm, habitable room: the floor insulated and raised, the door opening built up with a window or door, walls and roof insulated, and heating and electrics brought up to standard, all signed off under building regulations.

What a proper garage conversion involves

A garage conversion is far more than blocking up the door and laying a carpet. To meet Building Regulations and stay warm and dry, the floor, walls and roof all have to be brought up to habitable standard.

The floor is usually raised, insulated and given a damp proof membrane tied into the existing house, so the finished level matches the rest of the home and the cold, damp slab is sealed away.

The roof and ceiling are insulated, and we add heating, electrics, ventilation and proper damp control so the room performs like any other in the house. Done properly, you cannot tell it was ever a garage.

Permitted development or planning?

The majority of garage conversions are permitted development, because the work is internal and does not change the building's footprint. The exceptions are listed buildings, some conservation-area properties, and homes where a planning condition removed permitted-development rights when the house was built — common on newer estates. We check the planning history for your address and tell you the position before you commit.

Before and after

The difference it makes

Cluttered single garage before conversion
Before: Cluttered single garage before conversion
Garage converted into a home office with a new window and oak floor
After: Garage converted into a home office with a new window and oak floor
Our standard

What you get

  • Building regulations route chosen and the application handled
  • Floor insulated and raised to match the house
  • Door opening built up in matching brick or stone
  • Heating, electrics and ventilation to current standards

How it is built

  • Building regulations application
  • Damp proof membrane and insulated floor
  • Foundation and wall in the old door opening
  • Insulated walls and ceiling, plastered
  • New window or door
  • Completion certificate from building control
Home office in a converted garage with built-in shelving
By council

Building control and planning advice by council

Converting a garage needs building regulations approval, and the building control service and fee depend on where you live. Planning permission is not usually needed unless a planning condition keeps the garage for parking, the house is listed, or you are on a road-facing frontage in the Stamford conservation area.

Building controlTownsFeePre-application advice
Leicestershire Building Control PartnershipOakham, Uppingham, Ketton, Empingham, Cottesmore, Greetham, Langham, Whissendine, Ryhall, Edith Weston£517.96 building notice (garage conversion up to 36m²)£210
East Midlands Building ConsultancyStamfordset by East Midlands Building Consultancy's fee schedule; we confirm the figure for your job£90
Leicestershire Building Control PartnershipMarket Harborough, Great Bowden£517.96 building notice (garage conversion up to 36m²)£101
North Northamptonshire Council building controlCorby, Kettering, Weldonquoted by the council for each job (no published schedule)£187

Checked October 2026. LBCP fees from 1 April 2026. Planning fees are the national fees from 1 April 2026.

Recent work

The kind of finish we build

Home office in a converted garage with built-in shelving
Home office in a converted garage with built-in shelving
Desk and sofa in a garage conversion with a new window
Desk and sofa in a garage conversion with a new window
Insulation boards and damp proof membrane laid on a garage floor
Insulation boards and damp proof membrane laid on a garage floor
Garage walls battened and insulated during a conversion
Garage walls battened and insulated during a conversion
Questions

Things people ask us

How much does a garage conversion cost?
A full single garage conversion typically costs £14,000–£19,000, and a part conversion to a utility room or store starts from about £9,500, with the building control fee paid to the council.
Do I need planning permission?
Most garage conversions are internal and need no planning permission, unless a planning condition keeps the garage for parking or the house is listed. Building regulations approval is always needed. In Stamford's conservation area the Article 4 direction changes that for work facing a road.
Who handles building control?
It depends on the council: Leicestershire Building Control Partnership for Rutland and Market Harborough, East Midlands Building Consultancy for Stamford, and North Northamptonshire Council for Corby and Kettering. We make the application and arrange the inspections.
Near you

Garage conversions near you

Request a site visit

We measure up, check levels and drainage, and send a written proposal with the build-up, the programme and one whole price. No pressure and no follow-up sales calls.

Request a site visit Call 07312 132517
☎Call 07312 132517 Site visit