Queensland’s approval system is different from both New South Wales and Victoria, and the difference works in a Brisbane homeowner’s favour more often than not. Most building work is approved by a private certifier rather than the council, and a great deal of renovation is classed as accepted development requiring no planning application at all.
A related guide to consider while planning this work is How to Renovate a House in Australia.
The complication is that Brisbane layers overlays across a very large share of the city — character, flood, bushfire, biodiversity, landslide — and any one of them can convert a straightforward job into a development application. Establishing which apply to your property takes twenty minutes and determines the entire shape of your project.
The Two Approvals
Building approval — is it structurally sound and code compliant?
A building approval is issued by a private building certifier, or occasionally by the council, and assesses the work against the Building Act, the Queensland Development Code and the National Construction Code — structure, fire safety, health, amenity and energy efficiency.
You appoint the certifier and you pay them. They assess the documentation, issue the approval, carry out mandatory inspections during construction, and issue the final certificate at completion. There is no neighbour notification and no objection process.
Planning approval — is it appropriate for this site?
A planning approval, formally a development approval, is assessed by Brisbane City Council against the Brisbane City Plan — the zone, the applicable overlays, neighbourhood character, amenity impacts and the relevant codes.
Where the work is accepted development, no planning application is required at all. Where it is code assessable, an application is required but is assessed against the codes without public notification. Where it is impact assessable, the application is publicly notified, neighbours can make submissions, and appeal rights exist.
Where a planning approval is required, it must be obtained before the building approval can issue.
What Needs Building Approval
In Queensland, building approval is required for most building work, including:
- Extensions and additions of any size
- Structural alterations, including removing load-bearing walls
- Restumping, reblocking and house raising
- Decks above a specified height and most roofed structures
- Carports, garages, sheds and outbuildings above small thresholds
- Retaining walls above a specified height
- Swimming pools and pool fences
- Demolition
- Secondary dwellings
- Enclosing or building in under an existing house
Work that generally does not need building approval: internal painting and decorating, replacing floor coverings, non-structural internal alterations, and like-for-like kitchen fitouts that do not affect structure. Plumbing, drainage, gas and electrical work still require licensed practitioners and their own compliance certificates regardless.
A caution on bathrooms
A like-for-like bathroom fitout may not require building approval, but any structural change to the floor, any alteration to a load-bearing wall, or any change to the building’s waterproofing envelope in certain circumstances does. Discuss it with a certifier before demolition. Plumbing work requires a licensed plumber and a compliance certificate in every case. See our guide to waterproofing and wet area compliance in Brisbane.
The Overlays That Trigger a Planning Application
This is where Brisbane projects diverge. The overlays that most commonly convert accepted development into an application:
Traditional Building Character Overlay
The most consequential for inner Brisbane. It applies where pre-1947 dwellings remain a defining feature of the streetscape, which covers much of Paddington, Red Hill, New Farm, Bulimba, Ashgrove, West End, Norman Park and beyond.
Where it applies, a development application is triggered by:
- Demolishing a pre-1947 dwelling or a substantial part of it
- Raising or relocating a pre-1947 dwelling above specified heights
- Front extensions to a pre-1947 dwelling
- Constructing a new dwelling within the overlay
- Facade or roof changes visible from the street
Rear alterations not visible from the street typically remain accepted development. See our guide to Brisbane character and heritage controls.
Flood overlay
Brisbane’s flood mapping covers a substantial number of properties along the river, creeks and overland flow paths. Where a flood overlay applies, minimum habitable floor levels and flood-resilient material requirements apply, and additional assessment may be triggered.
Obtain a FloodWise Property Report from Brisbane City Council for any property you are considering. It is quick to get and it tells you the flood levels applying to the site. Doing this before purchase rather than after is the single most valuable check available in this city.
Other overlays
- Heritage overlay — for individually listed places, with much tighter controls than character
- Bushfire overlay — imposing construction standards under AS 3959
- Landslide hazard overlay — significant on Brisbane’s steep inner-western and hilly suburbs
- Biodiversity and waterway corridor overlays — affecting vegetation clearing and works near watercourses
- Airport environs and transport noise corridor overlays — imposing acoustic construction requirements
- Streetscape hierarchy and neighbourhood character overlays
All overlays affecting a property are searchable through Brisbane City Council’s online planning tools, free of charge. Check before you design.
Secondary Dwellings: Queensland’s Advantage
Brisbane’s secondary dwelling rules are among the most generous in the country.
- Maximum gross floor area of 80 square metres in metropolitan Brisbane, with some rural areas permitting up to 100 square metres. Non-habitable areas such as patios, carports and covered outdoor spaces are generally excluded from that calculation.
- Typical setbacks of around 3 metres from the rear boundary and 1.5 metres from side boundaries, with a minimum separation of about 1.8 metres from existing structures for fire separation, and total site coverage commonly capped at 50 per cent.
- They can be rented to non-family members where the dwelling is compliant — a change enabled since late 2022 and a genuine point of difference from other states.
- Many compliant projects proceed as accepted development without a separate council application, though a building approval from a private certifier is always required.
- Overlays still apply. A secondary dwelling on a character or flood-affected property will need more.
At 80 square metres and rentable to anyone, a Brisbane secondary dwelling is meaningfully larger and more flexible than a NSW or Victorian granny flat. See our guide to granny flats in Brisbane.
Energy Efficiency Requirements
Queensland applies the National Construction Code energy provisions through the Queensland Development Code. New dwellings must meet the current energy efficiency standard, with a whole-of-home energy budget covering heating, cooling, hot water, lighting and on-site generation.
For renovations, requirements generally apply to the new work, with scope depending on the extent of the alteration. In Brisbane’s subtropical climate the practical emphasis differs sharply from southern capitals: the assessment rewards shading, ventilation, roof insulation and reflective roofing far more than glazing performance and airtightness. Designing for breeze and shade is both the cheaper and the more effective compliance path here.
The Process and What It Costs
Where only a building approval is needed
- Appoint a private certifier — you choose and pay them
- Provide construction documentation, engineering, soil classification and energy compliance
- Approval typically issued within two to four weeks of a complete application
- Mandatory inspections during construction at defined stages
- Final certificate at completion
Where a development application is needed
- Pre-lodgement meeting with council, which is worth taking
- Prepare the application — plans, a planning report, and for character properties a character assessment
- Lodge and pay fees
- Council assessment, with information requests if the application is incomplete
- Public notification where the application is impact assessable
- Decision, with appeal rights to the Planning and Environment Court
Typical Brisbane timelines: eight to sixteen weeks for a straightforward code assessable application, four to nine months where the character overlay applies or submissions are made, and considerably longer if the matter is appealed.
Costs
- Private certifier building approval — $2,000 to $6,000 including inspections
- Development application fees — $1,500 to $6,000 depending on the type
- Building design or architectural documentation — $5,000 to $40,000
- Structural engineering — $2,500 to $6,000
- Soil classification — $600 to $1,500
- Survey — $1,200 to $3,000
- Energy compliance assessment — $400 to $1,200
- Town planner, where used — $3,000 to $12,000
- Character or heritage report — $2,000 to $6,000
- Bushfire assessment, where applicable — $1,500 to $4,000
- Arborist report — $800 to $2,500
Allow $10,000 to $30,000 in approvals and consultants on a mid-sized Brisbane renovation, more where the character overlay applies.
Licensing, Contracts and Warranty
Queensland’s thresholds are low and they catch small jobs.
- A QBCC licence is required for building work over $3,300, over $1,100 for hydraulic services design, and at any value for plumbing and drainage, gas fitting, termite chemical treatment, fire protection, residential building inspections, building design, site classification and mechanical services.
- Queensland Home Warranty Scheme cover is compulsory for residential construction work valued over $3,300 including materials, labour and GST. The contractor pays the premium to the QBCC and it is passed through in the contract.
- Cover runs 6 years and 6 months from the earliest of contract, premium payment or commencement, extending a further six months where the work took more than six months. Maximum payout is $200,000, with exclusions.
- The scheme covers non-completion, defective work the contractor will not fix, damage during non-completion, and subsidence or settlement.
Always ask to see the licence and verify it on the QBCC register. A digital QBCC licence has the same standing as a physical card. Using an unlicensed contractor may void your access to home warranty cover entirely — which is the single most expensive consequence available in a Queensland renovation. See our guide to vetting a Brisbane builder.
Building Without Approval
Unapproved building work in Queensland does not resolve itself. Councils can issue enforcement notices requiring work to be made compliant or removed, and penalties apply.
More commonly it surfaces at sale, when a buyer’s solicitor requests a building records search and unapproved work becomes a contract issue. Rectifying it requires a building approval for existing work, which may mean exposing concealed structure and obtaining retrospective engineering certification — routinely more expensive than obtaining approval in the first place.
There is also a warranty dimension. Work performed by an unlicensed contractor, or without required approvals, can leave you outside the Queensland Home Warranty Scheme when something goes wrong.
A Practical Sequence
- Check the overlays first. Brisbane City Council’s online planning tools show every overlay on a property, free.
- Get a FloodWise Property Report. Before purchase where possible.
- Establish whether the house is pre-1947 and whether the character overlay applies.
- Talk to a private certifier early, before design is finalised. Most give a preliminary view at little cost.
- Take a concept to a council pre-lodgement meeting if a development application looks likely.
- Get the soil classification before designing footings.
- Verify the builder’s QBCC licence and confirm home warranty cover is in place before paying anything.
- Track the mandatory inspections against the builder’s programme, and never allow a stage to be covered before the certifier has seen it.
- Get the final certificate and keep it with your plumbing and electrical compliance certificates.
Brisbane’s system is genuinely permissive for work that stays within the codes, and genuinely slow for work that does not. The projects that stall are almost never stopped by the certifier — they are stopped by a design drawn before anyone checked whether the house was built before 1947.
Working With Your Private Certifier
The private certifier is central to the Queensland system, and the relationship is worth understanding.
- You appoint and pay them, but their statutory duty is to the regulatory framework, not to you. They cannot approve work that does not comply.
- They carry out mandatory inspections at defined stages. Missing one — commonly the frame inspection before lining, or the wet area inspection before tiling — creates a serious problem at final certificate stage.
- Their registration can be verified with the QBCC.
- Engaging one early, before design is finalised, is the most efficient thing you can do. Most give a preliminary view at little or no cost, and that view can save weeks of redesign.
- They will tell you whether your proposal is accepted development or whether a development application is triggered — which is the single most valuable piece of information at the start of a Brisbane project.
Public Notification and Submissions
Building approvals involve no notification and no objection process. Development applications may, depending on whether the proposal is code assessable or impact assessable.
Code assessable applications are assessed against the applicable codes without public notification. Most character-overlay residential work falls here.
Impact assessable applications are publicly notified, submissions can be made, and submitters gain appeal rights to the Planning and Environment Court.
Approaches that reduce objection risk on a notified application:
- Speak to adjoining neighbours before lodging, with drawings in hand
- Address overshadowing, privacy and building bulk explicitly in the design
- Keep height and bulk away from boundaries
- Offer to share a dilapidation report where you will excavate near a boundary
- Engage with the substance of any submission — amended designs are approved far more often than defended ones
The Final Certificate
The last step and the one most often neglected. Depending on the work, the certifier issues a final inspection certificate or a certificate of classification at completion.
Without it you may have unapproved work in the eyes of a future buyer’s solicitor, difficulty with insurance claims, and problems obtaining finance. Obtaining it requires that all mandatory inspections were carried out and all compliance certificates are in place — plumbing, electrical, structural, energy, and the termite management system documentation.
Make your final progress payment conditional on it. This single contractual step is the most reliable way to ensure the paperwork is actually completed, and it costs nothing.
Keep the final certificate with your compliance certificates and termite documentation. At sale they are worth considerably more than they cost to obtain — and in Brisbane, a documented termite management system with a current inspection history is something buyers actively look for.