What's the difference between an LBP and a Master Builder?
Short answer
Licensed Building Practitioner (LBP) is a government licence administered by MBIE — mandatory for Restricted Building Work on residential houses. Registered Master Builder is a private trade-association membership. The two are completely separate: someone can be an LBP without being an RMB member, and (in theory but rarely in practice) someone can be an RMB member without holding an LBP licence themselves. Most professional builders are both.
Source: Building Act 2004 Part 4 Subpart 1. Updated May 2026.
Want to check the builder you're talking to? Check any NZ company, no signup.
Check a builderKey facts
- LBP — government licence, mandatory for RBW
- Master Builder — private association membership, voluntary
- Different rules, different processes, different costs
- LBP renewed annually, $200-300 ish fee
- RMB membership — annual subscription fee in the thousands
Side-by-side
LBP — required by law; tested by MBIE; classes for specific work types; public register at lbp.govt.nz; disciplinary regime under MBIE.
Master Builder — voluntary; gates Master Build Guarantee access; promotes brand; has its own complaints mediation; not a regulator.
Pick the right tool: check LBP for legal authority to do the work, check Master Builder for the guarantee.
Knowing the rules is half the job. The other half is knowing who you're hiring. Check any NZ builder against the public record: company status, licensing and insolvency notices, from the official NZ sources.
Related questions
Sources: Building Act 2004 Part 4 Subpart 1; Registered Master Builders Federation. 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.