Pergolas, Sheds, Shade Sails and Water Tanks

When is a Building Permit required?

Patio

A patio is a pergola with an impervious roof covering (eg. colorbond or polycarbonate sheeting).

You will need a Building Permit for a patio if any of the following apply:
  • The patio is attached to another structure, ie: dwelling, garage or similar structures.
If the patio is freestanding and;
  • The floor area exceeds 10m2
  • It is more than 2.4m in height.
Note: A freestanding patio should be located not less than 900mm from the dwelling, and a minimum distance of 500mm from the lot boundary.

Pergola

A pergola is an open-sided structure that is supported by columns or posts. It generally has an open roof or a permeable roof cover (eg. shade cloth). A pergola may be freestanding or attached to the dwelling. 

You will need a Building Permit for a pergola if any of the following apply:
  • The floor area exceeds 20m2
  • It is more than 2.4m in height.
Note: A pergola with an impervious roof covering (eg. colorbond or polycarbonate sheeting) is classed as a patio.

Rain water tank

You will need a Building Permit for a rain water tank if any of the following apply:
  • It is more than 1.8m in height
  • It has a capacity of more than 5000 litres
  • It is constructed of a material other than steel or fibreglass.
Note: The tank should be located in the rear yard of a property and not be visible from the primary or secondary streets.

The base of the tank must be placed directly on the ground or supported by a manufacturer designed tank stand not exceeding 300mm in height.

Shade sail

A shade sail is a piece of permeable fabric that is fixed to timber or metal posts to provide shade to an outdoor area. 
You will need a Building Permit for a shade sail if any of the following apply:
  • It is more than 20m2 in area
  • It is more than 2.4m in height.
Note: A shade sail made from impervious fabric (i.e. impenetrable to rainwater) is classed as a patio.

Shed

You will need a Building Permit for a shed if any of the following apply:
  • The floor area exceeds 10m2
  • The walls are more than 2.4m in height.
Note: Sheds can be built right up to a boundary but can be no closer than 900mm from house eaves. If this cannot be achieved, the shed must be 900mm from the boundary to comply with fire separation requirements of the Building Code of Australia.

Apply for a Building Permit

Visit the Building Permit Application page to find out how to apply, assessment timeframes and fees.

More information and contact

Please contact us on 9411 3444 or at customer@cockburn.wa.gov.au.

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Contact

Address

9 Coleville Crescent,
Spearwood 6163

Po Box 1215, Bibra Lake DC,
Western Australia, 6965

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