Plumbing a granny flat: sewer, water and hot water
What sits under the backyard, how a granny flat connects to sewer and water, hot water choices, stormwater and the paperwork, for Hunter homeowners.
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Key takeaways
- Find out what is under the yard first. As a general guide, buildings should stay at least 1.5 metres from Hunter Water assets.
- The flat's lowest fixture has to drain to the connection point, and the overflow relief gully must stay at least 150 mm below the lowest connected fixture.
- A new hot water service needs a temperature control device limiting outlets to 50°C, and any gas work needs a licensed gasfitter and a compliance certificate.
- If you plan to rent the flat and charge for water usage, it must be separately metered and meet the water efficiency rules.
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