How Much Does a Garage Conversion Cost in 2026?
A garage conversion is one of the most affordable ways to add a room. In 2026, UK homeowners can expect to pay between £6,000 and £20,000 depending on size and specification.
Get a Personalised Estimate
Tell our AI about your specific project and get an accurate price range in seconds — free, no signup required.
Get My Free EstimateCost Breakdown by Tier
Basic conversion with insulation, plasterboard, and simple electrics. Ideal for a home office.
Full conversion with quality flooring, lighting, heating, and a window or bifold door.
High-end finish with en-suite, underfloor heating, and bespoke joinery.
Factors That Affect the Cost
- Garage size
- Insulation requirements
- Window and door additions
- Plumbing for en-suite
- Heating system
Regional Price Variations
Garage conversion costs follow general building rates: 15-25% more in London and South East, 5-10% less in northern England.
Frequently Asked Questions
Do garage conversions need planning permission?
Most don't — they fall under Permitted Development. But building regulations approval is always required.
Does a garage conversion add value?
Yes, typically 10-15% to property value, making it one of the highest ROI home improvements.
Find Local Tradespeople
Browse trusted, reviewed tradespeople in your area ready to quote on your project.
Find Tradespeople Near Me