If you’re planning to build in Queensland — a new home, a granny flat, a deck, a shed, a commercial fit-out or a full renovation — you’ll almost certainly need a building approval before work can start. For most people that’s where the confusion begins: what actually needs approval, who signs it off, and what happens if the work has already been built?
This guide answers all of that in plain English, so you know exactly what’s ahead. And whenever you’d rather skip the reading and just get it sorted, Apex Approvals certifies residential, commercial and government projects right across South East Queensland and Northern New South Wales.
Do you need a building approval in Queensland?
Most building work in Queensland needs approval, but not all of it. Some minor work — small garden sheds within set size limits, certain low decks, and basic repairs — is self-assessable or exempt. Everything else needs a building approval before a footing goes in.
The thresholds are specific, and getting them wrong is expensive to unwind. Building classification matters too: houses are Class 1a, structures like sheds, carports, patios and decks are Class 10, and commercial buildings fall under Class 2–9. If there’s any doubt about your project, the quickest way to know for certain is to ask a certifier — get in touch with Apex Approvals and we’ll confirm whether yours needs approval.
Building approval vs development approval — what’s the difference?
This is the single biggest source of confusion, so it’s worth clearing up first.
A development approval (or planning approval) is about land use and siting — whether you can put this kind of building on this block, and where it can sit. It’s assessed against your local council’s planning scheme under the Planning Act 2016, covering zoning, setbacks, height and overlays like flood, bushfire, character and heritage.
A building approval is about the building itself — whether it’s designed and built to be safe and code-compliant. It’s assessed under the Building Act 1975 against the National Construction Code (NCC), the Queensland Development Code (QDC) and relevant Australian Standards.
Many straightforward projects need only a building approval. Others trigger both. The moment you step outside your council’s siting or use rules — building closer to a boundary than allowed, or working in an overlay — planning approval usually comes into play as well. Apex Approvals handles your building approval and will flag immediately if planning is needed too, so nothing catches you out mid-project.
Who issues building approvals — the council or a private certifier?
In Queensland, building approvals are issued by a building certifier, not directly by the council’s planning department. You can use a council certifier or a private building certifier, and for residential and most commercial work the vast majority of approvals are handled privately.
A private certifier assesses your plans against the code, issues the building approval (a Decision Notice with a stamped set of approved plans), carries out the mandatory inspections during construction, and signs off at completion. As an accredited private certifier, Apex Approvals does exactly this across every class of building — and engaging a certifier early is the smoothest path, because we can tell you upfront precisely what documentation you’ll need.
The building approval process, step by step
For a typical project, the path looks like this:
- Check whether planning approval is needed. The site is reviewed against the council planning scheme and any overlays. If it complies, you go straight to building approval; if not, a planning application comes first.
- Prepare and lodge documents. This is where most delays actually happen. A complete package usually includes plans, structural engineering, a soil report, energy efficiency documentation (QDC MP 4.1) and any specialist certificates.
- Assessment. The certifier checks everything against the NCC, QDC and relevant standards, and coordinates any referral agencies.
- Approval issued. You receive a Decision Notice and stamped approved plans, and construction can begin.
- Mandatory inspections. Key stages — typically footings, slab, frame and final — are inspected to confirm the build matches the approved plans.
- Sign-off. Once the final inspection passes, the certifier issues completion paperwork: a Final Inspection Certificate (Form 21) for a house, or a Certificate of Occupancy for commercial and multi-residential buildings (Class 2–9).
Approvals by project type
Every project has its own quirks. Here’s where the common ones sit:
- New homes (Class 1a) — the standard residential approval pathway.
- Granny flats and secondary dwellings — hugely popular in SEQ, and easier to rent out since recent state changes, though councils still set their own rules on size and siting.
- Decks, patios, carports and sheds (Class 10a) — simpler, but setbacks, height, wind rating and how the structure attaches to the house all affect what’s approvable.
- Swimming pools — need building approval and compliance with Queensland’s pool safety laws, including fencing and a pool safety certificate.
- Modular and relocatable homes — fully approvable, but they need a certifier who understands off-site manufacture and the footings, tie-downs and connections at the destination.
- Commercial projects of any scale (Class 2–9) — offices, retail, industrial, hospitality and fit-outs, from a single tenancy to a full development.
- Government projects — public and institutional builds certified to the same standard.
Whatever you’re building, talk to Apex Approvals and we’ll tell you exactly what your project needs.
Built without approval? Retrospective approvals explained
It happens more often than you’d think — a previous owner enclosed a carport, added a room, or built a shed without ever lodging for approval. Unapproved work doesn’t disappear. It tends to surface at the worst possible moment: during a conveyancing search when you’re selling, in an insurance claim, or when a council show cause notice lands on your desk.
The good news is that unapproved work can usually be resolved through a retrospective building approval. The process differs from a new build — the certifier is assessing work that already exists, which can mean engineering certification, opening up sections to verify what’s underneath, and demonstrating the finished work meets the code. It’s very doable, and far cheaper than demolition or a failed sale. Retrospective approvals are a specialty of ours — contact Apex Approvals and we’ll sort it out.
A note on the National Construction Code
Queensland is currently working under NCC 2022 (Amendment 2), and stays that way until 30 April 2027. NCC 2025 becomes the mandatory standard in Queensland from 1 May 2027 — the state deferred the changeover to give industry time to prepare. For any project designed and approved before that date, NCC 2022 applies. Worth keeping in mind if you’re contracting now for a build that runs into 2027, but for the vast majority of projects starting today, nothing changes.
Frequently asked questions
Do I need council approval or a private certifier in Queensland?
In Queensland, building approvals are issued by a building certifier, and most are handled by private certifiers rather than the council. A private certifier assesses your plans, issues the approval, inspects the build and signs it off. Apex Approvals can take care of the whole process for you.
Do I need approval for a granny flat or secondary dwelling?
Yes — secondary dwellings need building approval, and depending on your council’s planning scheme they may need planning approval too, based on size, siting and parking rules. It’s worth confirming the specifics before you commit to a design.
Do I need approval for a deck or shed?
Often, yes. Very small sheds and low decks can be exempt within set size and height limits, but most decks, patios, carports and larger sheds need approval — especially where setbacks, boundaries or easements are involved.
What happens if I build without approval?
Unapproved work can trigger a council show cause notice and creates problems when selling or making an insurance claim. It can usually be fixed with a retrospective building approval, which brings the existing work up to compliance.
How much does a building approval cost?
It depends on the project type, size and complexity, and whether planning approval or engineering is also required. The best way to get an accurate figure is a quote — request one from Apex Approvals.
Let’s make your project easy
Building approvals in Queensland aren’t as intimidating as they first appear — but they do reward getting the sequence right. Work out whether you need planning approval, get your documentation complete before you lodge, and bring a certifier in early so nothing catches you by surprise.
Apex Approvals certifies residential, commercial and government projects across South East Queensland. Get in touch for a no-obligation chat and we’ll make the approvals easy from day one.
