The NSW strata building bond, explained

First, the thing most articles get wrong

If you search for the strata building bond right now you will find a great many confident articles saying the rate rose to 3% on 1 July 2026. It did not. The increase from 2% to 3% has been deferred four times — originally to November 2024, then July 2025, then July 2026, and most recently to 1 July 2028. The articles are not dishonest; they were simply written before the latest deferral and never updated.

This matters commercially. On a $40 million contract the difference between 2% and 3% is $400,000 of cash tied up. Budget on the wrong number and you either strand capital you did not need to, or under-provision for a project that completes after the change actually lands.

What the scheme is for

The Strata Building Bond and Inspections Scheme exists because of a simple asymmetry: when defects in a new apartment building surface, the developer has usually moved on and the owners corporation has no money and no leverage. The bond keeps a pool of the developer's money within reach for the first couple of years, and appoints an independent inspector to say what is actually wrong.

It applies to new residential strata buildings that are not covered by home building compensation insurance — in practice, apartment buildings above three storeys. It covers common property: the roof, facade, waterproofing, fire systems, lifts, common services. Defects inside an individual apartment are somebody else's problem, dealt with under the contract or the statutory warranties.

The timeline that actually governs a developer

• Before the occupation certificate — the bond is lodged with the Secretary. No bond, no OC, no settlements. This is a critical-path item, not paperwork.
• Within 12 months of completion — the developer appoints an independent building inspector (with the owners corporation's involvement in the process).
• 15 to 18 months after completion — the interim report. The inspector identifies defective building work. This is the moment that decides everything that follows.
• 21 to 24 months after completion — the final report. It records what was rectified and what was not. Whatever remains is what the bond pays for.

Read that sequence again and note where the leverage sits. The interim report is not the end of the process — it is a warning shot with roughly six months of runway behind it. A developer who takes the interim report seriously and rectifies properly can arrive at the final report with a clean sheet. A developer who argues with it arrives at the final report with a bill.

What the bond really turns on

Everyone treats the bond as a financial instrument. It behaves much more like an evidence problem.

The inspector is not there to relitigate the build. They walk the common property and record what they observe against what the documentation says should be there. If there is a complete, dated defect history — inspected, photographed, rectified, reinspected, signed off — then most of what they might have flagged is already closed and demonstrably so. If there is no record, every observation is live, and the developer is arguing from memory against a written report.

That is the entire game. The bond is not protected by negotiation at month eighteen. It is protected by the register that was being kept from month zero.

For developers: how to get it back in full

• Close out properly before the OC. Defects that survive practical completion do not disappear; they wait fifteen months and reappear in a report with your name on it.
• Keep one register, cost-coded. When the inspector asks about the podium waterproofing, the answer should be a record, not a recollection.
• Treat the interim report as the deadline. You have months, not years, and rectifying then is far cheaper than funding it from the bond later.
• Reinspect what you rectify. A trade saying it is fixed is not evidence that it is fixed.
• Hand the owners corporation a real handover pack. Buildings with good documentation generate fewer disputed items, because there is less to speculate about.

For owners corporations: how to use it properly

The bond is the strongest position an owners corporation will ever be in, and it has a short shelf life. Two things determine whether it works for you.

Come to the inspection with your own evidence. The inspector's report is what the bond pays against. An owners corporation that has been logging defects since settlement — with dates, photos and locations — substantially changes what ends up in that report. One that turns up with a verbal list of complaints does not.

Diarise the dates the day you take over. The 15–18 month and 21–24 month windows are hard edges. Alongside them, note the statutory warranty dates under the Home Building Act — six years for major defects, two years for others — because the bond is only the first of your options, not the last. Our guide to the defect liability period sets out how those windows interact.

Common questions

How much is the strata building bond in NSW?
2% of the contract price for the building work. The legislated increase to 3% has been deferred and is currently scheduled for 1 July 2028.

When must it be lodged?
Before an occupation certificate is issued. A certifier cannot issue the OC without it, so it sits on the critical path to settlement.

When are the inspections?
An interim report at 15 to 18 months after completion, and a final report at 21 to 24 months.

When is the bond released?
If the final report finds no defective building work, it is returned to the developer. If it finds defects, the bond pays for rectification and the balance is returned.

Does it cover defects inside apartments?
No. The scheme covers common property. Lot defects are dealt with under the contract or the statutory warranties.

Where Group 4 fits

Both sides of this come down to the same thing: whether there is a documented, independent defect record. Group 4 builds that record for developers through close-out so the bond is defended before it is ever tested, and builds it for owners corporations so the inspection reflects what is actually wrong with the building. For the owners' side see strata and owners corporation support; for the delivery side, the service. The full picture of NSW close-out obligations sits in the NSW close-out playbook.

Current as at August 2026. The bond rate and commencement dates are set by the Strata Schemes Management Regulation 2016 and have changed several times; confirm the position with the NSW Building Commission before relying on it. General information, not legal advice.