This section applies to you if you recently received a letter from us about backflow prevention and you’ve chosen to self-manage the installation of only a backflow prevention device at your property’s boundary (‘Option 1’ in the letter you received).
For any other situation, such as:
- you want to install a backflow prevention device as part of other building work
- you didn’t recently receive a letter from us about backflow prevention at your property
You need to apply for building consent in the normal way. Please refer to the section below titled ‘Installing a backflow prevention device’.
We’ve streamlined the building consent process if you’re only installing a backflow prevention device – a fixed fee of $430 (incl. GST).
Your streamlined building consent will be approved within two working days of receiving your application, provided you’ve supplied all necessary information.
Please note that the fixed fee may not always cover all of the consent-related costs of an application (e.g. if the application does not contain all necessary information).
1. Let us know
You need to let us know(external link) that you’ve chosen to self-manage the installation of your backflow prevention device (‘Option 1’ in the letter you received).
We’ll email you within two working days with the information and documents you need.
2. Apply for a building consent
Complete and submit an Application for a building consent for the installation of a backflow prevention device (Form B-009) [DOCX, 396 KB]
3. Install your backflow prevention device
Once your consent is approved, a certifying plumber can go ahead and install your backflow prevention device on the private side of your property’s boundary.
After the device is installed, you may notice a small drop in water pressure. This is a sign that the device is working properly.
4. Apply for a code compliance certificate
After your backflow prevention device has been installed, you need to apply for a code compliance certificate using Form B-011 [PDF, 206 KB]. The cost of this is already included in the streamlined building consent application fee.
When you apply for a code compliance certificate, you also need to include the following information:
- A completed Construction statement – backflow prevention device [DOCX, 70 KB] (Form B-092)
- Photos from the certifying plumber
- Your device’s test report from an independent qualified person (IQP)(external link).
We’ll then issue you with a code of compliance certificate with a compliance schedule (or an amended compliance schedule) for your building.
5. Get your device tested annually
Your device needs to be tested annually (or after any repairs) by an IQP, as required by the compliance schedule, for you to be able to issue the annual building warrant of fitness.