How Much Does a Garden Room Cost in 2026?

UK garden room prices typically range from £10,000 for a small, basic structure to £35,000+ for a large, fully fitted-out space. Where your project lands depends on size, insulation standard, and how much interior fit-out you want.

What drives the price

• Size — the single biggest factor; price per m² actually falls slightly as rooms get bigger, since fixed costs (base, door, electrics run) are spread further
• Insulation and glazing standard — a genuinely all-year room costs more upfront than a basic “shed with windows,” but saves on heating for its lifetime
• Interior fit-out — a bare insulated shell costs far less than one with fitted storage, premium flooring, and built-in lighting design
• Ground conditions and access — sloped gardens, poor access, or the need for a more substantial foundation all add cost

Our current pricing

We keep our pricing transparent and fixed once agreed. Our four standard models range from £14,500 for our 9m² Compact Escape up to £28,080 for our 18m² Multi-Purpose Retreat, all fully insulated as standard under our CoreBuild specification. See the full breakdown, including optional SignatureFit upgrades, on our Price Guide page.

Financing options

Many customers spread the cost through a personal loan or home improvement finance rather than paying the full amount upfront. We’re happy to talk through the options available when you get in touch.

Get an accurate figure for your exact garden — contact us for a free, no-obligation quote.