Your strata building has a defect report — now what? Learn the 5-stage rectification process, how to evaluate contractors, what it costs, and how NSW law shapes your options. Updated for July 2026 SBBIS and DBP Act changes.
You have the engineer's report. It is sitting in your inbox or on the committee table — pages of photos, thermal scans, and technical language confirming what the owners already suspected. The building has defects, and someone needs to fix them.
But here is the part that catches most strata committees off guard: the report itself fixes nothing. It is a diagnosis, not a cure. And the gap between diagnosis and completed repairs is where buildings stall, budgets blow out, and committees lose years they cannot afford.
More than half of all Class 2 buildings in New South Wales have serious common-property defects. That is not anecdote — a NSW Building Commission survey found the figure sits at 53%. If your building is one of them, you are far from alone. But you are also working against the clock, because defect warranty periods do not pause while committees deliberate.
This guide walks you through the full defect rectification process in Sydney, from the moment you receive that report to the day your certifier signs off on completed work. It is written for strata committees and owners' corporations who have the report and now need to act.
An engineer's defect report identifies what is wrong. It catalogues cracks, water ingress, membrane failures, non-compliant fire systems, structural movement — whatever the building investigation and reporting process has uncovered. What it does not do is tell you how to get those defects fixed, what it will cost, or who should do the work.
Think of it like a mechanic's inspection report on a used car. Knowing the brake pads are worn does not replace the brake pads. You still need to find someone qualified, agree on price and timeline, and verify the work was done properly.
The report is essential. Without it, you are guessing. But it is step one of a longer process, and treating it as the finish line is one of the most common mistakes strata committees make. Defect reports often sit in committee folders for six, twelve, even eighteen months while owners argue about what to do next. Every month of delay is a month closer to your warranty expiry date.
The warranty clock does not reset. Major defects carry a six-year warranty period from the date of completion; minor defects carry two years. If your building was completed in 2021 and you are reading this in mid-2026, you may have months left, not years.
Rectification is not one step. It is a sequence, and skipping stages almost always costs more in the long run.
Your engineer's report lists defects, but a rectification scope translates those defects into a work specification — exactly what needs to be done, to what standard, using what materials, and in what order. A good scope document is detailed enough that two contractors reading it would price essentially the same job.
Without a clear scope, you end up comparing quotes that describe different work. One contractor prices full membrane replacement; another prices patch repairs. They look like competing prices for the same job, but they are not.
Once the scope is defined, you go to market. Under NSW strata legislation, if the expected cost exceeds $30,000, the owners' corporation must obtain at least two quotes. In practice, three is standard for significant works.
The tender process should provide each contractor with identical scope documents, identical access to the building, and identical timeframes to respond. Anything less makes comparison meaningless.
The committee — or general meeting, depending on the dollar threshold and your by-laws — selects and appoints a contractor. This stage includes contract negotiation, insurance verification, licensing checks, and agreement on payment milestones.
Do not rush this stage. A poor contractor appointment is the single largest source of rectification budget blowouts.
The physical work begins. Depending on complexity, this could take weeks or months. It involves trade coordination, resident communication, access scheduling, weather management, and progress reporting.
For buildings under the Strata Building Bond and Inspections Scheme, the rectification work may overlap with interim or final inspection periods. Interim inspections typically occur 15 to 18 months after completion; final inspections at 21 to 24 months.
Once works are complete, an independent certifier or the original reporting engineer inspects and confirms that defects have been properly rectified. This sign-off is critical. It provides the owners' corporation with documented evidence that the work was done to specification — evidence you may need later if disputes arise or if warranty claims are pursued.
Not every building contractor is suited to rectification work. New-build construction and defect rectification are fundamentally different disciplines. A builder who constructs apartment buildings is not necessarily qualified to unpick another builder's mistakes and fix them without creating new problems.
Here is what matters.
Relevant licensing and insurance. This sounds obvious, but check it. The contractor must hold the correct NSW Fair Trading licence class for the work involved. They must carry public liability, professional indemnity, and workers compensation insurance at levels appropriate for strata work. Ask for certificates, not promises.
Demonstrated experience with strata buildings. Rectification on an occupied strata building is nothing like renovating a house. You are working in a building where people live. Every noisy trade, every water shutdown, every scaffold affects residents. A defect rectification contractor experienced in strata environments understands how to manage resident communication, access logistics, and the political dynamics of working for a committee rather than a single client.
Ability to work from an engineer's scope. Some contractors prefer to write their own scope. That is a red flag in the rectification context. The scope should come from your independent engineer, not from the contractor who will profit from the work. The contractor should demonstrate that they can price and execute from someone else's specification.
Transparent pricing with clear milestones. You want a fixed-price contract with defined payment stages tied to completed milestones, not vague monthly progress claims. Milestone-based payment protects the owners' corporation from paying for work that has not been completed.
Warranty on rectification work. The contractor should warranty their own rectification work. This is separate from the original builder's warranty obligations. If a contractor will not stand behind their own repairs, that tells you something important.
Defect rectification in NSW does not happen in a legal vacuum. Several pieces of legislation directly affect what you can do, what you must do, and what protections you have.
The SBBIS requires developers of new strata buildings to lodge a bond to cover potential defect rectification. As of today — 1 July 2026 — that bond has increased from 2% to 3% of the contract price for contracts signed from this date forward.
This matters for two reasons. First, if your building falls under the scheme, the bond provides a pool of funds specifically earmarked for rectification. Second, the inspection timeline is fixed: interim at 15 to 18 months, final at 21 to 24 months. Missing these windows can mean forfeiting access to bond funds.
If your building was completed recently enough to fall under SBBIS, your strata manager should be tracking these dates. If they are not, raise it immediately.
The DBP Act imposes a statutory duty of care on building practitioners. From 1 July 2026, the duty-of-care provisions extend beyond Class 2 residential buildings to include Class 3 and Class 9c buildings — hotels, boarding houses, and aged-care facilities. This expansion means more building owners now have direct legal recourse against practitioners whose work causes defects.
When developers or original builders refuse to rectify defects voluntarily, the NSW Civil and Administrative Tribunal can issue Section 232 work orders that mandate rectification. These orders compel the responsible party to carry out specific repairs within a set timeframe. If you are considering this path, understand that it requires legal representation and can take months to progress through the tribunal — but it is a powerful enforcement mechanism when negotiation fails.
NSW strata legislation requires owners' corporations to obtain at least two quotes for any work expected to exceed $30,000. For significant rectification projects, best practice is to obtain three. This protects owners from inflated pricing and gives the committee a defensible basis for their contractor selection.
Strata committees deserve straight talk on costs. Here are realistic ranges based on project complexity.
Targeted repairs — isolated waterproofing, crack injection, localised concrete spalling — typically run between $20,000 and $100,000. These are single-trade or two-trade jobs on a specific part of the building.
Mid-scale rectification — façade repairs across multiple elevations, fire-system upgrades, balcony membrane replacement across several levels — ranges from $200,000 to $800,000. These projects involve multiple trades, scaffold access, and typically run for three to six months.
Complex multi-trade rectification — full building envelope remediation, structural repairs combined with fire and hydraulic work — can range from $1 million to $5 million or more. These are major capital projects that may require staged execution over 12 to 24 months.
Most strata rectification is funded through one or a combination of four sources. The capital works fund (formerly sinking fund) is the first port of call. If the fund is insufficient, a special levy may be required, which needs approval at a general meeting. For larger projects, strata loans are available through specialist lenders, allowing the owners' corporation to borrow and repay over time. And where the SBBIS applies, the building bond provides dedicated funds for defect rectification identified during the inspection process.
After years of rectification work across Sydney, the same mistakes recur.
Starting work without a complete scope. When the scope is vague, variations are inevitable. Every variation is an additional cost that was not in the original quote. A thorough scope document costs money upfront but saves multiples of that cost during execution.
Choosing the cheapest quote without understanding what it excludes. The cheapest quote is often cheap because it excludes items that other quotes include. Scaffold, make-good, waste removal, resident notification — these are real costs. If they are not in the quote, they will appear as variations later.
Delaying until warranty periods expire. This is the most expensive mistake of all. Once the warranty window closes, the owners' corporation bears the full cost with no recourse against the original builder. If your building has known defects and the warranty clock is running, procrastination is the most expensive decision you can make.
Failing to appoint a superintendent or project manager. Rectification projects on occupied buildings need someone managing the interface between contractor, committee, residents, and engineer. Without that role, communication breaks down, decisions stall, and the project drags.
Splitting work across too many contractors. It seems logical to get the cheapest price for each trade. In practice, multi-contractor rectification on a single building creates coordination nightmares. When the waterproofing contractor blames the tiler, and the tiler blames the structural contractor, the committee is left arbitrating disputes instead of getting repairs completed.
If your committee has the defect report and is ready to move to rectification, the next step is straightforward: get the report reviewed by a contractor who specialises in strata defect rectification in Sydney and can translate those findings into a clear scope, realistic timeline, and honest price.
Atomic Projects provides free defect rectification assessments for strata buildings across Sydney. We review your engineer's report, walk the building with your committee, and give you a plain-language explanation of what the work involves, what it will cost, and how long it will take — before you commit to anything. Get in touch here to book a time.
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