Supporting documents for plumbing and drainage permit applications

Apply for a permit using Form 1 – Permit work application for plumbing, drainage and on-site sewerage work (PDF, 223KB). You may need to provide additional documents, depending on the proposed work. Check the building classification to make sure you're providing the right documents.

See the full list of required documents in Plumbing and Drainage Regulation 2019, Schedule 6.

For a class 1a or 10a building

Along with Form 1 – Permit work application for plumbing, drainage and on-site sewerage work (PDF, 223KB), you must submit:

• a floor plan of the proposed building showing any proposed plumbing fixtures
• a plan showing the elevations of the proposed building.

If the proposed work involves installing sanitary drainage, also provide:

• a site classification report for the premises complying with 'Australian Standard (AS) 2870-2011 Residential slabs and footings'.
• a design showing the articulation of the sanitary drainage for the premises, if the soil classification for the premises under 'AS 2870-2011 Residential slabs and footings' is H, E or P.

For a class 1b, or 2 to 9 building

Along with Form 1 – Permit work application for plumbing, drainage and on-site sewerage work (PDF, 223KB), you must submit:

• a floor plan of the proposed building
• a plan showing the elevations of the proposed building.

Sanitary drainage work

If the proposed work involves installing sanitary drainage, also provide:

• a site classification report for the premises complying with 'AS 2870-2011 Residential slabs and footings'
• a design showing the articulation of the sanitary drainage for the premises, if the soil classification for the premises under 'AS 2870-2011 Residential slabs and footings' is H, E or P
• a plan showing:
  • all proposed fixtures
  • the proposed design and location of all sanitary drains
  • the location, size and invert levels of each sewerage system connection point
  • the proposed location and finished surface level of each overflow relief gully
  • the proposed location of any reflux valves or inspection points.

Water supply for a water service

If the proposed work involves water supply for a water service, provide a plan showing:

• all proposed fixtures
• the proposed design and location of all water supply pipes
• the location and size of each connection point to the service provider's water supply systems
• the details of any other supply of water on the premises
• the size and location of any water meters proposed to be installed on the premises
• the proposed location and type of any testable backflow prevention devices.

For a permit with a greywater facility

As well as the documents required for building classes 1a, 1b, 10a and 2–9, you must also submit:

• a plan showing:
  • the type, size and location of any greywater treatment plant
  • the location and levels of any connection points to the greywater use facility or the sanitary drainage
  • details of the proposed use of the greywater and, if the use includes a land application area, the proposed layout of the area, including minimum setback distances prescribed in the Queensland Plumbing and Wastewater Code (QPWC)
• a copy of the treatment plant approval, if the application involves the use of a greywater treatment plant
• a site and soil evaluation report for the premises, if the application involves the use of a land application area.

For a permit with an on-site sewage facility

As well as the documents required for building classes 1a, 1b,10a and 2–9, you must submit:

• a plan showing:
  • the type, size and location of the on-site sewage treatment plant
  • the location and levels of any connection points to the on-site sewage treatment plant
  • details of the proposed layout of any land application area including minimum setback distances prescribed in the QPWC
• a copy of the treatment plant approval, if the application involves the use of a secondary on-site sewage treatment plant
• a site and soil evaluation report for the premises.

For a permit with a performance or alternative solution

For a permit application that includes a method of compliance using a performance or alternative solution, provide a document that demonstrates:

• each performance requirement that the performance or alternative solution is intended to satisfy
• how the performance or alternative solution will satisfy the performance requirement, including any test results used to develop the performance or alternative solution
• any document certifying technical details or drawings for the performance or alternative solution.

Also provide, as applicable, any of the documents required for a permit:

• for building classes 1a, 1b, 10a and 2–9
• with a greywater use facility
• with an on-site sewage facility.

All supporting documents must be prepared by a competent person, defined as:

• someone who holds a licence under the Queensland Building and Construction Commission Act 1991, which qualifies them to develop the solution
• a registered professional engineer whose speciality is relevant to the solution
• another person considered competent by the local government.