Bad Building Report? Here's What Now: A Buyer's Guide to Negotiating House Price in NZ

So the building report is in, and it's not the clean bill of health you were hoping for. Maybe there's moisture in the subfloor, a roof that's due for replacement sooner than expected, or wiring that doesn't quite meet current standards. Your first reaction might be panic, followed closely by a question every Kiwi buyer eventually asks mid-transaction: what now? The good news is that a less-than-perfect building report isn't the end of the road. In fact, it can be one of the most useful tools you have. Knowing how to negotiate house prices after a building report in NZ is a skill that can save you thousands, and it starts with understanding exactly what you're looking at.

Step 1: Read the report properly before you react

Building reports can be dense, and it's easy to fixate on the scariest-sounding line item without understanding the full picture. Take the time to separate cosmetic issues, like a few cracked tiles or ageing paintwork, from structural or health and safety concerns, such as weathertightness problems, foundation movement, or non-compliant electrical work. A licensed building inspector will usually rank issues by severity, so use that as your starting point. If anything is unclear, it's worth calling the inspector directly and asking them to walk you through it in plain language.

Step 2: Get real numbers, not guesses

Vague concerns don't carry much weight at the negotiation table. Specific costs do. If the report flags a roof needing replacement or evidence of moisture damage, get a tradesperson or specialist to provide a rough quote for the repair work. Having an actual figure, even an estimate, turns "this house has problems" into "this house has an $18,000 problem," which is a much stronger position when you're talking numbers with the seller or their agent.

Step 3: Decide what you're actually asking for

Once you know the scope and cost of the issues, think about what outcome you want. Some buyers prefer a straight price reduction that reflects the cost of repairs. Others would rather the seller fix the problem before settlement, particularly for anything that affects the home's safety or weathertightness. There's also the option of asking for a mix of both, a partial reduction alongside the seller completing certain urgent work. Whichever path you choose, be clear and reasonable rather than throwing out a lowball figure that isn't backed by evidence.

Step 4: Keep the conversation grounded, not emotional

Negotiating after a bad report can feel personal, especially if you've already pictured yourself living in the house. Try to keep the conversation factual. Present the report findings and the repair estimates, explain how they affect the property's value or your comfort level, and let the numbers do the talking. Sellers and agents respond far better to buyers who come across as informed rather than upset.

Step 5: Know when to walk away

Not every issue is negotiable, and not every seller will move on price. If the building report has revealed something significant, like widespread weathertightness failure or major structural concerns, and the seller isn't willing to meet you partway, it may simply not be the right property. That's a hard pill to swallow after getting emotionally invested, but a building report exists precisely to protect you from taking on a costly, or even unsafe, home.

Bringing it back to the report itself At the end of the day, your negotiating power all comes back to the quality of the information in front of you. A thorough, clearly written building report gives you the evidence you need to advocate for yourself, whether that means a lower price, requested repairs, or the confidence to walk away entirely. Whatever the outcome, going into that conversation informed is always better than going in guessing.