Building Science

Pre-Purchase Building Inspections that reduce uncertainty

Insurance assessment experience for all main insurers since 2009. IICRC Water Damage Restoration Technician (2009). 2,500+ home inspections completed.

17+ years
Insurance assessment experience
2,500+
Houses inspected
2 days
Average report turnaround

Services

Pre-Purchase Inspections

Independent assessment before you buy, with clear findings and practical recommendations.

Pre-Sale Advice to Vendors

Identify risks and improvements before listing, so the sale process is smoother and more defensible.

Second Opinions on Existing Reports

If you've received a report and want a sober, technical review, we'll verify and clarify what matters.

Delivery timeline

Reports are issued within two business days of the inspection.

What to expect from booking to report

A clear four-step process from your first enquiry through to your finished report.

Step 1

Book online

Fill out the enquiry form with your property details and preferred dates. We'll confirm scope and access arrangements with you directly.

Step 2

Inspection carried out

We attend on-site and conduct the full inspection — including moisture survey and thermal imaging. You're welcome to join the walk-through.

Step 3

Report compiled

Findings, photographs, moisture readings and thermal images are compiled into your written report with clear risk ratings and recommendations.

Step 4

Report delivered

Your completed report is issued within two business days of the inspection, ready to support your purchase decision.

Understanding where New Zealand homes leak

Based on Prendos and BRANZ seminar material from 2002, the chart below summarises where leaks were found across roughly 1,329 documented cases. Balcony leaks, window installation, and roof leaks together account for about 74% of all leaks — worth knowing where to look first.

RankLeak TypeCategoryApprox. Leaks% of Total
1Balcony LeaksWater Source~40030.1%
2Window & Door  InstallationJoinery~30522.9%
3Roof LeaksWater Source~28021.1%
4Cladding to pavingCapillary~1158.7%
5CladdingWall~755.6%
6Cladding to groundCapillary~503.8%
7Cladding to balconyCapillary~483.6%
8Inadequate subfloor ventilationOther~332.5%
9Shower leaksOther~90.7%
10Retaining wallOther~80.6%
11Cladding to roof/gutterCapillary~30.2%
11Plumbing leaksOther~30.2%
Total (top 3 = ~74%)~1,329100%

Relative size of leak sources

Bar length is proportional to the approximate number of leaks. Colours group leaks by category.

Balcony LeaksWindow & Door InstallationRoof LeaksCladding to pavingCladdingCladding to groundCladding to balconyInadequate subfloorventilationShower leaksRetaining wallCladding to roof/gutterPlumbing leaks
Water Source
Wall
Capillary
Other
Joinery

Percentages are relative to the 12 items shown and will shift if excluded Wall sub-items or Roof/Balcony breakdowns are added back. Source: Prendos and BRANZ seminar material, 2002.

Frequently asked questions

Everything you need to know about booking and getting your report.