Do I need a consent for a water tank?

Schedule 1 of the Building Act 2004 details exempt building work that does not require a building consent.

Part 23 of Schedule 1 of the Building Act 2004 states that a building consent is not required for the following building work:

Building work in connection with a tank or pool and any structure in support of the tank or pool, including any tank or pool that is part of any other building for which a building consent is required, that:

(a) does not exceed 500 litres capacity and is supported not more than 4 metres above the supporting ground; or
(b) does not exceed 1 000 litres capacity and is supported not more than 3 metres above the supporting ground; or
(c) does not exceed 2 000 litres capacity and is supported not more than 2 metres above the supporting ground; or
(d) does not exceed 4 000 litres capacity and is supported not more than 1 metre above the supporting ground; or
(e) does not exceed 8 000 litres capacity and is supported not more than 0.5 metres above the supporting ground; or
(f) does not exceed 16 000 litres capacity and is supported not more than 0.25 metres above the supporting ground; or
(g) does not exceed 35 000 litres capacity and is supported directly by ground.

Although a Building Consent may not be required for the installation of a water tank, a water tank is considered an accessory building and therefore must comply with the District Plan rules.