400 Sq ft Tiny House Floor Plans
400 ft² is the classic tiny-house target — a real bedroom, a full bath and a live/cook zone that does not feel like a hallway.
Plan specs
- Total area
- 400 ft²
- Bedrooms
- 1
- Bathrooms
- 1
Generated to scale — every room dimension is real and the areas sum to the total.
In a tiny house the difference between livable and cramped is measured in inches, so a plan that is genuinely to scale matters more here than anywhere else. Most builds sit between 8×20 and 16×40, with a bathroom on one end, a kitchen and living zone in the middle, and sleeping in a loft or a fold-away bed.
Designing a 400 ft² tiny home plan
- Trailer-legal builds cap at 8.5 ft wide — plan the width first.
- Put the bathroom over the trailer tongue or on one short end.
- A sleeping loft frees the whole floor for living and storage.