by 
A well-built shed, deck, or extension can look completely legitimate and still lack the council or certifier approval it needed. This guide explains why visible structures do not guarantee approval, how to check, and what can go wrong if you buy without checking.
Structures That Commonly Need Approval
Sheds over a certain size, decks and patios attached to or near a dwelling, pools, extensions, carports, and other building work generally require either council or private certifier building approval in Queensland, depending on the size, type, and location of the structure. Some very small or low-impact structures can be exempt, but the exemptions are specific rather than a general rule of thumb.
Why a Visible Structure Does Not Mean It Was Approved
A structure can be professionally built, look well finished, and still have been constructed without the required approval, or with approval sought but never finalised. Appearance and workmanship are not evidence of compliance, and there is no reliable way to tell from a visual inspection alone whether a structure was properly approved.
Checking Council and Building Records
Buyers, or their conveyancer on their behalf, can request the property’s building approval history from the relevant local council as part of standard due diligence searches. This can reveal whether approvals exist for structures on the property, and whether any final inspection or certificate of classification was issued to close out the approval.
Consequences of Missing Approvals
If a structure turns out to be unapproved, the council can potentially require it to be removed or brought up to standard through a retrospective approval process, which may involve engineering reports or other costs. Unapproved structures can also complicate an insurance claim if the structure is damaged, since insurers may query whether it was legally built.
Implications for Future Sale, Insurance and Renovation
An unapproved pool, for example, cannot obtain a valid pool safety certificate until it is brought into compliance. See our guide to buying a property with a pool in Queensland. Unapproved structures can also complicate future renovation plans, since council may require the existing unapproved work to be regularised before approving new work that depends on it, and they can affect how a property is described and valued at resale.
What to Ask and When to Get Professional Advice
Ask the agent and seller directly whether structures such as sheds, decks, pools, or extensions were approved, and request copies of any approval documentation. If you suspect a structure is unapproved, or the seller cannot confirm approval, a building certifier can advise on what regularisation would involve, and your conveyancer or solicitor can advise on how this affects your contract and settlement.
Where This Fits Into Your Research
See our guides to Queensland seller disclosure and building and pest inspections, and our broader guide on what to check before making an offer.
Where Narevella Can Help
Our free Queensland Property Research Checklist covers approval and documentation checks alongside the wider research process. For a specific address, our Property Review can help.
Disclaimer
This guide provides general research information only and is not building, certification, or legal advice. Confirm the approval status of any structure through the relevant council or a licensed building certifier, and seek advice from your conveyancer or solicitor if approvals are missing or unclear.
Join The Discussion