Recent determinations – June 2026
Determinations are legally binding decisions made by the Ministry of Business, Innovation and Employment (MBIE). They are for matters of doubt or dispute to do with building work outlined in the Building Act and the Building Code.
For further information about determinations, visit the Building Performance website.
Previous determinations(external link) – Building Performance
2026/015: Compliance of a tiled bathroom floor with Building Code clause E3
This determination considers the compliance of a tiled floor of an upper-level bathroom with Building Code clause E3 Internal moisture.
The determination discusses the tiled floor system, the shower enclosure, and the compliance of the tiled floor with Building Code clause B2 Durability, in so far as it relates to clause E3.
Determination 2026/015(external link) [PDF 214KB]
2026/017: The issue of a certificate of acceptance for a shower room and building code compliance of the work
This determination concerns the decision of the authority to issue a certificate of acceptance for the installation of a new shower room in an existing dwelling.
The determination considers whether the building work complies with Building Code Clause E3 – Internal moisture and Building Code Clause G13 - Foul Water.
Determination 2026/017(external link) [PDF 271KB]