New rules for Kiwi homes: Mandatory build warranties, proportionate liability and clearer LIM hazard info in 2026–27

• Mandatory home warranties.  For all new homes up to 3 storeys and renovations ≥ $100,000 (as proposed: a 1-year defects period plus a 10-year structural warranty). Providers are expected to register with MBIE and meet standards.   

• Design professionals are expected to hold Professional Indemnity (PI) insurance. Architects/engineers involved in design work will be required to carry PI insurance, ensuring financial backing if design faults arise.  

• Liability shifts to aproportionate model. The Government plans to replace “joint and several liability” (where councils often end up paying when other parties can’t) with proportionate liability (each party pays their share). A Building Amendment Bill is anticipated early 2026; with a 1-year implementation period.  

• Tougher penalties for poor practice. Licensed Building Practitioner (LBP) penalties are expected to increase (e.g., higher fines and longer suspension periods).  

Why this matters for homeowners. 
More protection after handover (warranty), greater confidence in design (mandatory PI), and a shift in accountability that is intended to reduce reliance on councils as “last resort”.  

Timing at a glance. 
Government has signalled introduction of the Bill in early 2026; consumers should allow ~12 months for warranties/PI mandates to go live (potentially 2027 start).  

• From 1 July 2025 councils are required to include understandable natural‑hazard info on LIMs; regional councils must share hazard data; and councils are protected for good‑faith disclosure.  

• From 17 Oct 2025 standardised LIM regulations required a dedicated hazards section, plain‑language summaries, and maps/links (incl. flood).  

• What’s next: the National Adaptation Framework commits to a public National Flood Map - first generation planned for 2027 - giving a consistent nationwide view of flood risk.  

Why this matters for homeowners. 
Clearer, comparable hazard information when buying, selling, renovating, insuring or talking to lenders.  

Before you sign - Ask for the warranty details (provider, coverage, claims); confirm PI cover for the architect/engineer (limits/period); check your LIM and council hazard maps; discuss with your broker how contract works and any required warranties interact with your home policy.  

During the project - Keep good records (plans/specs/inspection notes/producer statements) and confirm product compliance with your designer/consent authority (especially for overseas approved products) to avoid rework.  

At completion - Collect your code compliance certificate (file with your records) and update your home insurance for new sums insured/features and any flood‑resilience improvements.  

Order a current LIM (hazard info is now standardised). For new builds/major renos, request warranty paperwork and designer PI confirmation - these are expected to become common requirements. Talk to your broker about how hazard flags (e.g., flood) may affect excesses/premiums/conditions - and which mitigations can help.  

Note: availability and terms can vary by location and by insurer, so it pays to check options early with your broker. 

More protection (warranties, PI rules) and clearer hazard information (LIMs now, National Flood Map ahead). Expect reforms to phase in through 2026–27 (Bill anticipated early 2026, with a 12‑month lead‑in) and hazard transparency to improve further as the national flood map is progressed (currently planned for 2027).