Building Investigation & Reporting · Sydney

Find the cause. Then fund the fix.

Independent building investigation for Sydney strata and commercial buildings — invasive testing that finds the real defect before a cent is committed to repairs. Don't guess. Know.

Class 2 DBP Registered · Licence 360636C · Engineer-aligned reporting

No obligation. A builder reviews it — not a call centre.

100 +
Buildings
$20M +
Delivered
15 +
Years experience
4.7
Google rating
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Key takeaways
1

An investigation finds which layer failed and why — the diagnosis that has to come before a repair is priced.

2

Skip it and you pay twice: misdiagnosed repairs, scope blowouts, and rejected insurance claims with no documented evidence.

3

A report runs $1,500–$3,500 for a single area, $4,000–$10,000+ for a multi-area strata building — and rolls into the works.

Why it matters

Skip the diagnosis and you pay for it twice.

Rushing past the investigation stage is the single most expensive mistake an owners corporation makes. Here's what it costs.

01

Misdiagnosed repairs

Cracks get patched while the waterproofing keeps failing. Concrete gets coated while corrosion continues underneath. The symptom is treated, the cause isn't — and the defect comes straight back.

02

Escalating cost & disruption

A small leak left undiagnosed becomes a full facade or balcony rebuild. Caught early on a report, it's a contained repair. Caught late, it's a capital works programme.

03

Legal & insurance exposure

In a dispute or claim, the absence of a documented investigation is a liability. Insurers reject claims without evidence; defect cases get harder to defend. A report is the evidence base.

Start here

What a building investigation actually is.

A building investigation is the diagnosis that comes before the repair — finding which layer failed and why, not just what you can see.

Water ingress, cracking, corrosion and cladding failure rarely start at the surface.

By the time the stain shows on the ceiling, the cause is usually a layer underneath — a perished membrane, carbonated concrete, movement at a junction, or a detailing failure built in years ago.

"A price written without an investigation is a guess — it either pads for the unknown or misses it, and the owners corporation pays for the gap later."

— CLASS 2 DBP REGISTERED · LICENCE 360636C

Class 2DBP registered
360636CBuilder licence
ReportPlain-English

What an investigation covers

We match the method to the defect — not a blanket checklist. A typical investigation draws on:

• Moisture mapping & thermal imaging — hidden water ingress behind facades, slabs and wet areas

• Concrete carbonation & core sampling — how far corrosion has advanced; cosmetic vs structural

• Borescope & internal cavity inspection — the failed layer without demolishing the element

• Leak detection & water testing — the exact entry path, confirmed not assumed

• Drone facade & roof survey — defects mapped with no scaffold or EWP

Each method is matched to the defect and the building — an observation report, a condition assessment, or a full invasive investigation.

Why investigation first saves money

A price written without an investigation is a guess — it either pads for the unknown or misses it, and the owners corporation pays for the gap as a variation later. A defined defect means a fixed-price scope, fewer engineer call-outs, and no repeat repairs two years on.

How Atomic Projects handles it

We're the builders who do the repairs — so our diagnosis is grounded in what we actually find when concrete is broken out and balconies are opened, not desktop guesswork. We're Class 2 DBP registered (Licence 360636C), and where works follow, the report rolls straight into the scope so nothing is wasted.

We'd rather you verify us than take our word for it. Our licence is on the NSW Fair Trading register — check it before you call.

Risk reversal

Independent. Documented. Verifiable.

A report is only worth what it can stand behind. Ours is built to survive an engineer's review, an insurer's scrutiny, and a tribunal's questions.

We're the builders who do the repairsOur reports are based on real site knowledge — what we see when concrete is broken out and balconies are opened. Not desktop guesswork.
Class 2 DBP — Licence 360636CVerify us on the NSW Fair Trading register before you engage us. Fully licensed remedial builder with PI and public liability cover.
Engineer & insurer recognisedEngineers rely on our reports to write scopes; insurers accept them as supporting evidence. Referred by 20+ independent engineers.
Plain English, for the committeeFindings written so the whole committee can read them and agree on what to do — not just the one technical owner.

We'd rather you verify the report than take our word for it.

Our approach

We investigate, document, and prove.

1
Step 1Detailed site inspectionWe inspect every affected area — balconies, facades, roofs, internal voids — recording visible symptoms and the early signs of what's underneath.
2
Step 2Specialist testing & diagnosticsWe confirm root causes with targeted testing — moisture meters, core sampling, carbonation testing, borescope and drone surveys.
3
Step 3Independent, plain-English reportingYou receive a clear report: what's wrong, why it happened, how to fix it — written to support engineers, owners and insurers alike.
4
Step 4Engineer collaboration & recommendationsWhere required, we align findings with your structural, fire or remedial engineer — then recommend durable fixes that stop the defect recurring.
Straight answers on price

What a building investigation costs.

1
Single area / small site — $1,500–$3,500One apartment, balcony or defined area — inspection, photos and a plain-English report.
2
Multi-area strata — $4,000–$10,000+Whole-building or multi-unit investigation across facades, balconies, roofs and waterproofing.
3
Detailed defect mapping — POAInvasive testing, drone survey and full defect mapping — priced to the building.
4
Rolls into the worksWhere works follow, the report rolls into the scope so nothing is wasted — often bundled with strata remedial services.
They found the actual leak path before anyone pulled up a membrane. One diagnosis turned a recurring problem into a fixed-price repair — no guesswork, no going back.
DP
Strata Committee Chair
High-rise building, Darling Point

Related reading.

Plain-English guides for committees and managers — on the rules, the risks, and getting remedial works right.

Common questions

What your committee will want to know.

What do building investigation reports include?+
Reports are built for action — a site inspection with annotated photos; moisture testing, borescope or core sampling where required; a clear summary of the defects and their root causes; and practical repair recommendations with next steps. They support the balcony, concrete, facade or waterproofing scopes that follow.
How long does a building investigation take?+
It depends on complexity: an observation report is about 7 days, a condition assessment 7–10 days, and a full invasive investigation 14–21 days. Complex issues may need engineer coordination or drone inspections, which can extend the timeline.
How much do building investigation reports cost?+
Pricing varies with access and scope: a single area or small site is $1,500–$3,500; a multi-area strata building is $4,000–$10,000+; detailed defect mapping with invasive testing is POA. Clear pricing, no surprises — and where works follow, the report rolls into the scope.
Does your report replace an engineer's report?+
No. We gather the evidence — photos, scans and invasive records — that engineers use to write their specifications. We work alongside your engineer, not instead of them. For invasive work we recommend the engineer attends so findings can be signed off on the spot.
Do you carry out the remedial works too?+
Yes. Once the engineer finalises a specification, Atomic can tender and carry out the works — Class 2 DBP registered, so regulated work is lodged and declared properly. Being the builder who does the repair is exactly why our diagnosis is grounded in what we actually find on site.
What testing happens during a building investigation?+
Depending on the defect: moisture mapping to trace water paths, core samples of concrete or screed, cover meter surveys and ground-penetrating radar to locate reinforcement, delamination surveys on suspect concrete, and targeted opening-up where finishes conceal the failure. The mix is chosen to prove the root cause, because the diagnosis is what the whole repair scope hangs off.
How disruptive is a building investigation for residents?+
Minimal. It is diagnostic work, not construction: no demolition, no scaffold-wrapped building, no weeks of noise. The team needs access to affected areas, balconies, ceilings below leak points, common areas and sometimes the roof, and individual unit visits typically take 30 to 60 minutes, scheduled through the strata manager so residents know exactly when to expect them.
Why investigate before getting builder quotes?+
Because quotes without a defined scope are guesses priced with confidence. Each builder assumes a different repair, so the committee compares three different jobs, and the cheapest guess usually grows variations mid-works. Investigation fixes the scope first, which makes prices comparable, keeps the budget honest, and produces the documentation trail regulated work on Class 2 buildings needs anyway.
Can an investigation find hidden waterproofing failures?+
Yes, that is much of the point. Moisture mapping and targeted testing trace where water is actually travelling behind tiles, render and plasterboard, which is often a long way from where it shows up. Membrane condition, failed flashings and blocked drainage paths can all be identified without stripping whole areas, so the repair scope targets the real entry point.
Does an investigation lock us into using the same builder?+
No. The findings and specification are written so any qualified contractor can price them, and putting the same documented scope in front of multiple builders is exactly how committees get comparable tenders. If Atomic Projects prices the rectification as well, it is against the same documented scope, which the committee can test in the open market.
Start with a diagnosis

Don't guess. Know.

Send the symptoms, the photos, or the engineer's brief. We'll investigate, document and prove what's actually wrong — so the money goes on the fix, not the guesswork. We respond within 1 business day.

Request an investigation.
Tell us about your building. We respond within 24 hours.
We respond within 24 hours. No spam, ever.
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