Interior
Garage Renovation Cost Calculator
Converting or renovating a garage into usable space.
Calculating your estimate…
Interior
Converting or renovating a garage into usable space.
Calculating your estimate…
The Garage Renovation calculator gives you a realistic, independent cost range for this project in the UK, based on the answers you give about your property and the work involved. It is designed to be a starting point before you contact a tradesperson — not a replacement for a written quote.
We start from a base cost range for garage renovation in the UK of £6,000 – £18,000, built from published trade pricing and typical garage renovation project scope. That range is then adjusted by the four answers you give in the calculator above, and — if you pick a region — by a local cost multiplier. On a typical project, around 48% of the total is labour, 47% is materials, and the remainder covers small additional costs. Our full methodology covers this process for every calculator.
For a medium-sized, standard-finish garage renovation project on a typical home with moderate site access, the calculator returns £6,300 – £18,900, with a typical cost of £12,600 (£5,920 materials, £6,050 labour, £630 additional costs). Change your answers above to get a range for your own project.
This tool provides an independent, general estimate — not a quote, bid or binding price. It can't account for hidden structural issues, permit costs in your specific area, or a particular tradesperson's pricing. See our methodology for how every calculator on HomeCostly is built and reviewed, and our corrections policy if you think a figure needs updating.
Most United Kingdom homeowners pay £6,000 – £18,000 for Garage Renovation, before adjusting for your project size, property type, finish quality and site access. For example, a medium-sized, standard-finish job in a typical home with moderate access comes out to around £6,300 – £18,900, with a typical cost of £12,600.
Your answers to four questions adjust the base range: project size, property type, finish / material quality, site accessibility. Project size typically has the biggest effect (small vs. large spans roughly 154%), followed by finish quality (budget vs. premium spans roughly 107%).
No. This is an independent estimate, not a quote, bid or binding price from any tradesperson, contractor or HomeCostly itself. Actual costs depend on the specific condition of your property, local labour availability and the professional you hire — always get several like-for-like quotes before booking work.
Yes. Select a region in the calculator above to apply a local cost multiplier on top of the national range — labour and material costs vary meaningfully between regions in both the UK and USA.
