Tiny House GuideBuilding

Outside Bath

An outdoor soak is pure tiny-living luxury, and it keeps a big, heavy fixture out of your home.

A bath is one of the hardest things to fit inside a tiny house. It is large, heavy, and uses a lot of hot water. Putting it outside solves all three problems at once and gives you something genuinely special: soaking under the open sky. For many tiny-house owners, an outdoor tub is the luxury that makes small living feel rich rather than cramped.

Why outside makes sense

Types of outdoor bath

Hot water and filling

A bath holds a lot of water, so heating is the main consideration. You can fill from an instantaneous gas heater (the same kind that runs an outdoor shower), draw from your hot water system if it has the capacity, or use a wood-fired tub that heats itself. Remember a full bath can empty a small hot water tank quickly, so size your system to suit, or choose continuous-flow gas.

Privacy, base and drainage

Set the tub on a solid, level base that can take the weight of bath plus water plus a person, such as a reinforced deck, concrete pad or compacted pavers. Add a screen or planting for privacy. As with an outdoor shower, the used water (greywater) must drain somewhere legal, so plan a soak pit or directed garden drain and use plant-safe products. Greywater rules vary by council.

Going indoor instead?

If you want a bath inside, compact soaking tubs can fit a tiny bathroom. See our indoor bath guide, and the outside shower guide for a matching setup.

Please note: support the full loaded weight on a proper base, have gas hot water work done by a licensed gasfitter, and check local greywater rules before installing a permanent drain. Last updated: June 2026.