Cost guide
How much does a garden room cost?
Published UK ranges from a basic self-assembly office to a fully insulated garden room.
Our own rates for a garden room run £600-£2,500 per m² excluding VAT, depending on specification tier - use the cost calculator for an estimate based on your project. For general UK market context, garden room costs vary hugely by specification: a self-assembly mini office runs roughly £2,500-£8,000, a small insulated and professionally assembled office £3,200-£7,800, and a larger home office pod £3,500-£20,000, according to Checkatrade's UK cost guide.
Last updated 17 August 2026
| Range | ||
|---|---|---|
| Our rate (all specification tiers) - our confirmed rate, excl. VAT | £600-£2,500 | Per m² |
| Mini garden office, self-assembly (market) | £2,500-£8,000 | Total project |
| Larch-clad insulated office, unassembled (market) | £2,500-£6,000 | Total project |
| Small insulated office, professionally assembled (market) | £3,200-£7,800 | Total project |
| Home office pod (market) | £3,500-£20,000 | Total project |
| Professional assembly labour only (market) | £700-£1,800 | Total project |
Source: Checkatrade (updated June 2026)
Worth knowing
The market figures below come from a single named source (Checkatrade) - we couldn't independently corroborate them against a second UK cost guide at the time of writing. Use the cost calculator for a personalised estimate based on our own current rates.
These are general UK ranges. We build across the North West, including Darwen, Blackburn and the wider Lancashire and Greater Manchester area - site access, local trade rates and travel distance can move your actual price within (or occasionally outside) the range above.
Key points
- Insulation and glazing specification - a genuinely year-round usable room costs more than a fair-weather summerhouse.
- Size and whether it's self-assembled or professionally built and fitted.
- Electrics, plumbing (if adding a WC or kitchenette) and groundworks/foundations for the base.
These are general published ranges, not a quote. Get an estimate based on your own project.
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Common questions
How much does a garden room cost? FAQs
Is this a fixed quote for my garden room?
No. The figures above are published UK industry ranges from Checkatrade, not a quote for your project. An accurate price depends on a site survey and your specific requirements - get in touch for an estimate based on your own project.
What actually drives the price up or down?
Insulation and glazing specification - a genuinely year-round usable room costs more than a fair-weather summerhouse. Size and whether it's self-assembled or professionally built and fitted.
What's a typical our rate (all specification tiers) in per m² terms?
Our rate (all specification tiers) typically runs £600-£2,500 (per m²), for a our confirmed rate, excl. VAT, based on the sources cited above.
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