Latest updates
Building CodeHub resources update – October 2025
Resources added/updated in BCH in October 2025 include:
- MBIE new and updated resources – Product certificate (CodeMark), MultiProof approvals, Determinations, a Guidance and Recognition notices for WaterMark building products.
- BRANZ new and updated resources – Appraisals, Bulletins and Build magazine articles.
Resources removed from BCH in October 2025:
- BRANZ Appraisals – withdrawn.
The following resources have been added to Building CodeHub:
MBIE Product Certificates (CodeMark) - new, re-issued and revised:
- CMNZ70169 version: 0 - UET Glass Mineral Wool Insulation
- CMNZ30018 version: P - Linea™ Weatherboard by James Hardie Direct Fixed and Cavity Cladding systems
- CMNZ70188 version: 0 - ArmaWrap SA
- CMNZ30105 version E - Pineclad & Pineclad TMT Horizontal Weatherboard External Cladding System
- CMNZ30106 version E - Pineclad & Pineclad TMT Vertical Weatherboard External Cladding System
MBIE MultiProof certificates - new and rebranded:
- A-20072: BRANZ LIMITED - BRANZ Homes
- A-20057: Hawke's Bay Project Management Ltd - Excel series single classroom - Type 2
- A-20058: Hawke's Bay Project Management Ltd - Excel series double classroom - Type 3
MBIE Determinations:
- 2025/051: Compliance of an altered retaining wall with B1 Structure and a surface water management system with E1 Surface water
- 2025/052: An authority’s decision to refuse to issue a code compliance certificate for a relocated dwelling
MBIE Guidance:
MBIE Recognition notices for WaterMark building products:
- Building (Product Recognition WaterMark Showers) Notice 2025: RN-10001
- Building (Product Recognition WaterMark Drinking Water Treatment Systems) Notice 2025: RN-10002
- Building (Product Recognition WaterMark Gate Valves) Notice 2025: RN-10003
- Building (Product Recognition WaterMark Metal Flexible Couplings) Notice 2025: RN-10004
- Building (Product Recognition WaterMark Polypropylene (PP) Piping Systems Soil and Waste Discharge) Notice 2025: RN-10005
- Building (Product Recognition WaterMark Water Supply – Flexible Hose Assemblies) Notice 2025: RN-10006
- Building (Product Recognition WaterMark Ductile Iron Pipes and Fittings) Notice 2025: RN-10007
- Building (Product Recognition WaterMark Storage Tanks for Water and Chemicals) Notice 2025: RN-10008
- Building (Product Recognition WaterMark Tapware) Notice 2025: RN-10009
- Building (Product Recognition WaterMark PVC-U Pipes and Fittings for Drain, Waste and Vent Applications) Notice 2025: RN-10010
- Building (Product Recognition WaterMark PVC-U Pipes and Fittings for Pressure Applications) Notice 2025: RN-10011
- Building (Product Recognition WaterMark Cross-linked Polyethylene (PE-X) Pipes for Pressure Applications) Notice 2025: RN-10012
- Building (Product Recognition WaterMark Cross-linked Polyethylene (PE-X) Fittings) Notice 2025: RN-10013
- Building (Product Recognition WaterMark Polybutylene (PB) Pipes) Notice 2025: RN-10014
- Building (Product Recognition WaterMark Water Supply – Backflow Prevention Devices) Notice 2025: RN-10015
- Building (Product Recognition WaterMark Fittings for Polyethylene (PE) Pipes for Pressure Applications) Notice 2025: RN-10016
- Building (Product Recognition WaterMark Polyethylene (PE) Pipes for Pressure Applications) Notice 2025: RN-10017
- Building (Product Recognition WaterMark Plastic Piping Systems for Soil and Waste Discharge – Polyethylene (PE)) Notice 2025: RN-10018
- Building (Product Recognition WaterMark Modified PVC (PVCM) Pipes for Pressure Applications) Notice 2025: RN-10019
- Building (Product Recognition WaterMark Polyethylene (PE) and Polypropylene (PP) Pipes and Fittings – Drainage and Sewerage Applications) Notice 2025: RN-10020
- Building (Product Recognition WaterMark Polybutylene (PB) Plumbing Pipe Systems – Hot and Cold Water Applications) Notice 2025: RN-10021
- Building Building (Product Recognition WaterMark Air Admittance Valves (AAVs)) Notice 2025: RN-10022
BRANZ Appraisals - new, re-issued and amended:
- Appraisal number 1061 (2025) - ARDEX WeldTec Exposed Membrane Systems
- Appraisal number 945 (2022) - DekCradle™ and ErgoFlor™ Timber Framing Cradles
BRANZ Bulletins - new and updated:
- BU687 Introduction to smart homes
- BU698 Residential mechanical ventilation systems
- BU699 Warm roofs in domestic construction
- BU700 Natural hazard information for building sites
- BU701 Building on land subject to flooding and/or landslides
- BU702 Construction work after an emergency
BUILD Articles:
- Are we ready for wildfire at our doorstep? - Build 207 (2025)
- Housing design for safe evacuation - Build 207 (2025)
- Bottom plate structural fixings to concrete slabs - Build 207 (2025)
- Window head flashings - Build 207 (2025)
- Weatherproofing cables through exterior cavity walls - Build 207 (2025)
- Centrally fixed aluminium window and door joinery - Build 207 (2025)
The following resources have been removed from Building CodeHub:
BRANZ Appraisals - withdrawn:
- Appraisal number 1141 (2020) - Davco K10 Plus, K10 Rapid and Davco K12 External Waterproofing Membrane
- Appraisal number 1142 (2020) Davco K10 Plus, K10 Rapid and Davco K12 Internal Waterproofing Membranes
Notification date: 4 November 2025