The single most common regret we hear from garden-room buyers a year after installation: 'I wish I'd gone one size bigger'. Room feels smaller than the drawings suggest once furniture goes in; more uses emerge over time; growing children need more space. The best strategy: work out the minimum footprint for your use case, then add 15-20%.
Common footprints by use
- Home office (solo): minimum 3.0 × 2.4 m, comfortable 3.5 × 2.7 m
- Home office (client-facing): 4.0 × 3.0 m minimum
- Garden gym (functional): 4.0 × 3.0 m minimum, comfortable 4.5 × 3.5 m
- Yoga/pilates studio: 4.0 × 3.5 m
- Guest room / snug: 3.5 × 3.0 m minimum
- Family living room / cinema: 5.0 × 4.0 m
- Combined use (office + gym, or studio + guest): 5.0 × 4.0 m or larger, ideally L-shaped
How to test the footprint
Before committing, use the planner tool at /design-your-space to compare footprints against rooms in your current home. A 4×3 m garden room is roughly the size of a small double bedroom. Standing in your existing bedroom and imagining a desk, a chair and a small sofa in there is a very useful test.