Building inspectors in New Zealand can sometimes include indicative cost guidance in their reports, but providing detailed remediation estimates is generally outside the standard scope of a pre-purchase or maintenance inspection. What you receive depends on the inspector's qualifications, the type of report commissioned, and the terms of their engagement. Understanding the difference helps you get the right advice before committing to a property purchase or repair project.
What a Standard Building Inspection Report Covers
A typical NZ building inspection report focuses on identifying defects, deficiencies, and maintenance issues in a property. The inspector will assess things like:
- Roof cladding, gutters, and flashings
- Wall cladding and weathertightness
- Foundations, subfloor framing, and drainage
- Interior linings, joinery, and moisture levels
- Plumbing, electrical, and heating systems (visual check only)
The report will usually classify issues by urgency or severity — for example, immediate safety concerns versus routine maintenance items. This gives you a clear picture of the property's condition, but it is not the same as a quantity surveyor's or builder's remediation estimate.
Can Inspectors Include Cost Estimates?
Some building inspectors — particularly those who hold a Licensed Building Practitioner (LBP) licence or have a background as a qualified builder — will include broad indicative cost ranges alongside identified defects. These are typically framed as rough guides (e.g., "re-roofing this area could cost in the range of $X,000–$X,000") rather than firm quotes.
However, there are important limitations:
- Indicative figures are not quotes. They should not be used as the basis for price negotiations without further verification.
- Hidden defects change the picture. Inspectors work non-invasively, so costs can escalate once work begins and more damage is uncovered.
- Specialist trades require specialist estimates. Issues involving plumbing, electrical, or structural engineering work need quotes from licensed tradespeople in those fields.
- Liability varies. Check whether the inspector's professional indemnity insurance covers cost estimates — some policies specifically exclude them.
Always read the scope and limitations section of any inspection report carefully. Reputable inspectors are transparent about what their cost guidance does and does not represent.
When You Need More Than an Inspection Report
If a building inspection uncovers significant issues — leaky building concerns, structural movement, or major weathertightness failures — you will likely need additional specialist assessments before you can get reliable remediation costs. Consider engaging:
- A registered quantity surveyor for detailed cost planning on large remediation projects
- A licensed builder for written quotes on specific repair scopes
- A structural engineer if foundation or framing issues are identified
- A weathertightness specialist for suspected leaky home scenarios
BRANZ publishes research and guidance on building defects and remediation approaches that can help you understand the scale of common issues.
NZ Building Code and Compliance Considerations
Remediation work on existing buildings must still comply with the NZ Building Code, administered by MBIE Building Performance. Depending on the scope of repairs, a building consent may be required. Schedule 1 of the Building Act lists certain exemptions for minor work, but the rules are nuanced — always confirm with your local council whether consent is needed before starting remediation.
For example, replacing like-for-like roof cladding on a small area may be exempt, but significant structural repairs or changes to weathertightness systems typically require consent and inspections.
Restricted Work: What Must Be Done by Licensed Tradespeople
Some remediation work identified in a building inspection report is legally restricted and must be carried out by licensed professionals:
- Electrical work must be performed by a registered electrician (see EWRB). Homeowners can do very limited DIY electrical work — check the EWRB website for current rules.
- Plumbing, gasfitting, and drainlaying must be done by a licensed tradesperson registered with the PGDB.
- Restricted building work (structural, weathertightness, and certain other categories) must be carried out or supervised by an LBP.
Never attempt restricted work yourself based on a building inspection report — doing so can void insurance, create liability issues, and put people at risk.
Tips for Getting the Most Out of Your Inspection Report
- Ask upfront whether the inspector includes indicative cost guidance and how it is framed.
- Request a verbal debrief after the inspection so you can ask questions about priorities.
- Use the report as a checklist when getting quotes from tradespeople — share the relevant sections with each contractor.
- Get multiple quotes for any significant remediation work identified.
When to Call a Professional
If a building inspection report flags serious defects — particularly weathertightness failures, structural concerns, or signs of leaky building syndrome — do not rely on indicative costs alone. Engage a qualified builder, engineer, or quantity surveyor to provide a proper assessment before proceeding. You can find qualified local building inspectors and tradespeople on tradedirectory.co.nz.
Licensed Building Practitioner (LBP)
BCITO Qualified
