What is a Licensed Building Practitioner (LBP) in NZ?
Short answer
A Licensed Building Practitioner (LBP) is a building professional assessed and licensed by the NZ government to carry out or supervise 'restricted building work' — the structural and weathertightness work critical to a safe, dry home. LBP classes include carpenters, designers, roofers, bricklayers, external plasterers and foundation specialists.
Key facts
- Government-licensed and regularly reassessed
- Required to do or supervise restricted building work
- Classes include carpenter, designer, roofer, bricklayer, plasterer, foundations
- Must provide a Record of Building Work on completion
What an LBP is
LBPs are assessed before they're licensed and must keep their knowledge current to stay licensed. They're licensed for specific classes of work matching their expertise, so a roofing LBP and a carpentry LBP aren't interchangeable.
When you must use one
By law, restricted building work — the structural and weathertightness work on a home — must be designed, carried out or supervised by an LBP. For most renovations and new builds, that means an LBP needs to be involved.
How to check
You can look up an individual on the public LBP register to confirm their licence and class. It's also worth checking the company behind them — its public record, court history and director track record — before you sign.
Knowing the rules is half the job. The other half is knowing who you're hiring — check any NZ builder's court action, insolvency history, director track record and AI risk score in 30 seconds.
Related questions
Sources: LBP (lbp.govt.nz); Building Performance (building.govt.nz) — LBP licence classes. General information for NZ homeowners, not legal advice — building rules change and vary by council, so confirm critical details on the official source before acting. Last updated 2026-05.