Cost guide
How much does a garden room cost?
Published UK ranges from a basic self-assembly office to a fully insulated garden room.
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 | ||
|---|---|---|
| Mini garden office, self-assembly | £2,500–£8,000 | Total project |
| Larch-clad insulated office, unassembled | £2,500–£6,000 | Total project |
| Small insulated office, professionally assembled | £3,200–£7,800 | Total project |
| Home office pod | £3,500–£20,000 | Total project |
| Professional assembly labour only | £700–£1,800 | Total project |
Source: Checkatrade (updated June 2026)
Worth knowing
These figures come from a single named source (Checkatrade) — we couldn't independently corroborate them against a second UK cost guide at the time of writing.
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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