Compliance with Building Code and Consent Processes
Domain 8 tests the Building Act 2004 framework: the Building Code, the consent and inspection pathway, restricted building work and licensed building practitioners, and the durability and energy clauses that shape everyday choices on site.
The framework
- The Building Code sits in Schedule 1 of the Building Regulations 1992 and is performance-based. Clauses you use daily: B1 structure, B2 durability, E2 external moisture, E3 internal moisture, G4 ventilation and H1 energy efficiency.
- B2 durability: 50 years for structural and hard-to-replace elements, 15 years for weathertightness and moderately accessible items, 5 years for easily replaced items such as sealants.
- H1 has moved to a 5th edition with higher insulation R-values. Which edition applies depends on the consent date, so confirm the required R-values for the climate zone before ordering insulation.
The consent pathway
- PIM, then building consent (nominally 20 working days to process), then inspections at the notified stages, then a code compliance certificate.
- Restricted building work - structure, external moisture and fire safety for residential buildings - must be carried out or supervised by a licensed building practitioner, with a record of work.
- Changes require an amendment to the consent. Schedule 1 exemptions are narrow and never cover restricted building work.
Worked example
A homeowner wants the wall between kitchen and lounge removed. Check the drawings for load-bearing and bracing; if load-bearing, an LBP designer or engineer specifies the beam and consent is required. Book pre-line and post-install inspections, and if the owner later widens the opening, apply for an amendment before framing.
Traps that cost marks
- Starting work before consent is granted.
- Assuming a small job is exempt when it touches restricted building work.
- Missing the deadline to apply for a code compliance certificate.
- Ignoring B2 durability when selecting sealants and flashings.