Last updated: 21 March 2016

MultiProofs are beneficial for builders and companies who build standardised designs.

Building control officials will need to request an invite from to access the MultiProof Shared Workspace.

A new shared workspace tool has been introduced. Users of the previous tool should request an invite for the new tool if required.


Consider applying for a MultiProof if you plan to replicate the same or similar standardised building design many times.

A national multiple-use approval (known as a MultiProof) is a statement by the Ministry of Business, Innovation and Employment (MBIE) that a set of plans and specifications for a building complies with the Building Code.

You must have the intention and the ability to build an approved MultiProof design at least 10 times over two years. It can cover alternatives to a standard design as long as they have been approved in the MultiProof.

MultiProofs are beneficial for builders and companies who build standardised designs.

How MultiProof works

Although your MultiProof design has been approved as compliant with the Building Code, you still need to apply for a building consent each time you want to build.

This allows the Building Consent Authority (BCA) to confirm and establish:

  • the design, with any permitted variations, is the same as the design approved in the MultiProof
  • the proposed site meets the conditions of the MultiProof
  • any site specific features of the design comply with the Building Code
  • the inspections required.

However, because you have a MultiProof for the design the BCA must grant or refuse your building consent application within 10 working days instead of the usual 20.

Who should use MultiProof

MultiProof is beneficial for those who:

  • build or intend to build a number of similar designs
  • use standard construction details for a range of similar buildings
  • want to offer customers a lower-cost option
  • want to save time when applying for a building consent
  • need consistency when applying for building consents to different BCAs
  • can build the approved design at least 10 times in a two year period.

To apply for MultiProof, your design will need to meet certain requirements.

Eligibility has information about the requirements you need to meet.

Contact us for help if you are considering applying for MultiProof.

This information is published by the Ministry of Business, Innovation and Employment’s Chief Executive. It is a general guide only and, if used, does not relieve any person of the obligation to consider any matter to which the information relates according to the circumstances of the particular case. Expert advice may be required in specific circumstances. Where this information relates to assisting people: