How to Get DA Approval in Brisbane

What Is a Development Application?

A Development Application (DA) is a formal request to Brisbane City Council for permission to carry out development on your property. In Queensland, the Planning Act 2016 governs when development approval is required and how applications are assessed. Brisbane City Council uses its City Plan 2014 (commonly called CityPlan) as the framework for assessing what is and isn't acceptable.

Not all work requires a DA. Minor works such as internal renovations, painting, or replacing a like-for-like roof often don't require approval. But new construction, significant extensions, additions above a certain height, and changes to land use almost always do. A building designer can quickly tell you whether your project needs approval before you commit to anything.

Code Assessment vs Impact Assessment

Queensland's planning system distinguishes between two assessment types:

Code assessment: Your proposal is assessed against the specific codes in CityPlan (setbacks, height limits, materials, etc.). If it meets all the applicable codes, approval is generally straightforward and no public notification is required. Most residential DAs fall into this category.
Impact assessment: Your proposal doesn't fully comply with the relevant codes, or the zone/overlay triggers impact assessment by default. The application goes on public notification for at least 15 business days, during which neighbours and the public can make submissions. This makes the process longer and less certain.

One of the most valuable things a building designer does is design your project to achieve code assessment wherever possible, keeping the process efficient and predictable.

What Triggers a DA in a Residential Zone?

In Brisbane's Low Density Residential Zone (the most common suburban zone), development approval is typically required for:

New dwelling houses and secondary dwellings (granny flats)
Dual occupancy (duplexes) on a single lot
Roofed structures (patios, carports, sheds) exceeding specific dimensions
Retaining walls above 1 metre in height
Swimming pools
Works within Character Overlays, Flood Overlay, or other site-specific overlay areas

Your property's zone, any applicable overlays, and the specific nature of your project all affect what's required. Brisbane's online PD Online mapping tool is a good starting point, but a site analysis from a building designer gives you a reliable picture of what applies before you invest in design.

What Documents Does Brisbane City Council Require?

A standard residential DA submission to Brisbane City Council typically includes:

Completed DA form (lodged through Council's online system)
Architectural drawings: site plan, floor plans, elevations, and sections to a minimum scale of 1:100
Shadow diagrams (where height or overshadowing is relevant)
Stormwater management plan or drainage report
Relevant overlay mapping documentation (if flood, character, or other overlays apply)
Town planning assessment report (for impact assessable applications)

A thorough, well-documented application reduces the chance of a Request for Information (RFI): a formal request from Council for additional information that stops the assessment clock and adds weeks to the process.

How Long Does DA Approval Take in Brisbane?

For code assessable residential applications, Brisbane City Council's statutory timeframe is 20 business days from lodgement (once any RFI is resolved). Well-prepared, code-compliant applications regularly achieve approval within this window. Impact assessable applications typically take 30 to 50 business days after public notification closes, depending on submission volume and complexity.

Pre-Lodgement Meetings

For complex or sensitive sites, a pre-lodgement meeting with Council can be invaluable. These meetings give you the opportunity to present your proposal to a planning officer, get informal feedback on potential issues, and understand how your application is likely to be assessed before you commit to final drawings and fees. Your building designer can present on your behalf and record any guidance Council provides.

Designer Plans manages the DA process for residential projects across Brisbane, from initial site analysis and design to lodgement and approvals liaison. QBCC Licence 15204075.

Call 0402 109 167 or request a quote online for a no-obligation conversation about your project.

Common Reasons Applications Are Refused or Delayed

Applications run into trouble most often when:

The design doesn't address all relevant codes, particularly setbacks, height, and site cover
Overlay requirements (flood, character, biodiversity) aren't properly addressed
Drawings are incomplete or don't meet minimum presentation standards
The assessment report doesn't adequately justify any non-compliances

Working with an experienced building designer who understands CityPlan and Council's expectations significantly reduces the risk of delays and refusals. The goal is always to get it right the first time.