Prices
Garden room costs, explained honestly
Every quote is fixed in writing after a free survey. Here's what our builds typically cost across Yorkshire — and exactly what's included.
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Typical garden room prices
| Room | From | Best for |
|---|---|---|
| Compact 14m²Focused home office or reading room | £18,500 | Focused home office or reading room |
| Classic 20m²Home office + seating, or small gym | £22,500 | Home office + seating, or small gym |
| Studio 28m²Office with meeting space, or full gym | £29,500 | Office with meeting space, or full gym |
| Lounge 30m²+Sliding-glass garden lounge with vaulted ceiling | £34,000 | Sliding-glass garden lounge with vaulted ceiling |
| Annexe 35m²+Guest suite with shower room — surveyed individually | POA | Guest suite with shower room — surveyed individually |
Prices are indicative for Yorkshire installations, based on recent builds. Your fixed written quote follows the free survey.
Included as standard
Garden room cost questions
How much does a garden room cost in Yorkshire?
National Garden Rooms start from £18,500 fully installed, and most projects land between £22,000 and £40,000 depending on size, glazing, cladding and internal fit-out. Multi-room annexes with sleeping accommodation are priced individually after survey.
Why are National Garden Rooms prices higher than online 'cheap' garden rooms?
Our rooms are buildings, not upgraded sheds. The price includes steel foundations, 150mm insulation throughout, full electrics, plastered interiors, flooring, aluminium double glazing and installation by our own crews — the costs others quote as extras.
Is the quote really fixed?
Yes. After your free survey you receive a fixed written price. The only things that change it are changes you request — never ground conditions we should have spotted, or 'installation extras'.
What are the running costs?
With our standard insulation and an electric panel heater, a typical 20m² room costs roughly 60p–£1.20 per day to heat through a Yorkshire winter, depending on how heavily you use it.
Do I need planning permission?
Most garden rooms fall under permitted development and don't need permission. Exceptions include annexes with sleeping accommodation, properties in conservation areas and some listed settings. We assess every address at survey and handle any application for you.