How Much Does a Garage Refurbishment Cost? (UK)
A refurbished garage adds usable space as a workshop, gym or storage without the cost of a full conversion. In 2026, a garage refurbishment in the UK costs £1,500-£4,000 for a basic refresh, and £4,000-£8,000 for a full refurb with insulation, boarding, flooring and power. Turning it into a habitable room is £6,000-£15,000+. Price depends on the door, insulation, electrics and finish. This guide breaks it down and shows how to compare builder quotes.
Garage Refurbishment Cost by Job
The cost depends on how far you take it, from a quick refresh to a fully insulated, boarded and powered space. A refurb keeps the garage as a garage; turning it into a habitable room is a conversion and costs more. Here is the 2026 ladder.
Basic refresh
£1,500-£4,000. A new door, repaint, tidy-up and better lighting to smarten the garage without structural change.
Full refurb
£4,000-£8,000. Insulation, plasterboard, flooring and upgraded power and lighting to make a usable workshop, gym or utility space.
New garage door
£600-£2,500 fitted. Up-and-over is cheapest; sectional, roller and insulated doors cost more but improve security and warmth.
Electrics upgrade
£500-£2,000. A dedicated consumer unit, extra sockets, lighting and outdoor power, all by a qualified electrician and certified.
Insulation, boarding and flooring
£2,000-£5,000. Insulating the walls and roof, plasterboarding and a durable floor make the space comfortable year round.
Refurb vs conversion
A refurb keeps the garage as a garage. A conversion to a habitable room needs Building Regs, higher insulation and is £6,000-£15,000+.
Refurbishment or conversion?
The distinction decides both the budget and the paperwork. A refurbishment keeps the garage a garage. A conversion turns it into a habitable room, which brings Building Regulations, higher insulation standards and a different price bracket entirely.
If a conversion is a possibility later, it is worth specifying the insulation and electrics for it now — retrofitting both costs more than doing them once.
Common Questions
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