What a garage conversion costs
Converting an integral or attached garage typically costs £6,000–£20,000 in 2026. A straightforward conversion of a single garage into a room runs around £6,000–£12,000; adding a bathroom, bi-fold doors or a kitchenette pushes it higher.
Why it’s such good value
The walls, roof and foundations already exist, so a garage conversion is one of the cheapest ways to add a proper room — a home office, gym, playroom, snug or extra bedroom. Because you’re not extending the footprint, it’s far less disruptive than building from scratch.
What the work involves
Typically: infilling the garage door with an insulated wall and window, raising and insulating the floor, insulating the walls and ceiling, and adding heating, electrics and ventilation to meet building regulations.
Get a conversion quote
Tell us what you’d use the space for and we’ll match you with trusted local garage conversion specialists.