Impact Assessable Development Guide

Impact assessable development guide flowchart showing public notification, submissions, and council assessment stages under the Planning Act 2016.

Impact Assessable Development Guide

Plain-English Summary

Impact assessable development is the highest level of assessment under the Planning Act 2016. It requires public notification, allows anyone to make a properly made submission, and Council assesses it against a broad range of planning benchmarks including zone codes, overlays, precincts, and the Strategic Framework. This category applies when a proposal exceeds standard planning thresholds or carries potential impacts on neighbours, traffic, vegetation, or local character.


Urgent Assistance

DA Refused or Knocked Back? Act Fast.

Don’t let strict council appeal deadlines run out. Speak directly to our Client Liaison, DA Refusal Help QLD right now for an immediate strategy review.



📞 Call Aaron Direct: 0477 767 423

International: +61 477 767 423

Table of Contents

What This Problem Actually Means

Under the Planning Act 2016, impact assessable development triggers a mandatory public notification period. Gold Coast City Council must advertise the application for a minimum of 15 business days. During this time, members of the public can read the application and lodge formal submissions. Council then weighs those submissions as part of its overall assessment.

Impact assessment exists because some projects go beyond what the local planning code can simply tick off. These projects may affect neighbours, traffic, vegetation, or character in ways that deserve community input. As a result, the assessment process is broader and more complex than standard code assessment.

The Gold Coast City Plan 2016 sets out which land uses and development types fall into impact assessment. In addition, certain overlays — such as the bushfire hazard overlay or flood overlay — can push a proposal into impact assessment even when the base land use would not normally require it.

Why This Problem Happens

Most homeowners do not expect their project to trigger impact assessment. However, several common situations lead to this outcome. For example, a proposed land use may not be listed as a code assessable use in that zone. In that case, the City Plan 2016 automatically classifies it as impact assessable.

Secondly, some development types are always impact assessable regardless of the zone. These include certain material change of use applications, as well as reconfiguring a lot in sensitive areas. In addition, a project located within a sensitive overlay area may trigger the higher assessment category.

Furthermore, exceeding specific thresholds — such as building height limits or site coverage — can move a proposal from code assessment to impact assessment. This often surprises applicants who designed their project without first checking the relevant overlay maps.

What Triggers Impact Assessment

  • The proposed land use is not listed as code assessable in the zone
  • Certain development types are always impact assessable under the City Plan 2016
  • Flood, bushfire, biodiversity, or character overlays increase the assessment level
  • Exceeding height limits or site cover thresholds
  • Reconfiguring a lot in sensitive areas
  • A material change of use that carries potential neighbourhood impacts

How Gold Coast City Council Assesses This Issue

Gold Coast City Council assesses impact assessable applications against a wider range of criteria. These include the relevant zone code, overlays, and any applicable precinct provisions under the City Plan 2016. Council also considers the Strategic Framework, which sets the long-term vision for the city. Because of this, the assessment covers far more than a single code.

Council may also refer the application to a referral agency. For example, the Department of State Development, Infrastructure, Local Government and Planning may act as a referral agency for certain development types. Similarly, the Department of Environment and Science may become involved where the site has ecological sensitivity.

Submissions from the public become part of the assessment record. Council must consider each properly made submission. However, the number of submissions does not automatically determine the outcome. Council weighs submissions against the planning merits of the application.

Council officers prepare an assessment report for the decision-maker. That report summarises the planning grounds and any proposed conditions. In addition, it addresses each properly made submission received during public notification.

General Process Overview

Homeowners generally start by preparing a development application with all required supporting material. A town planner usually assists at this stage to ensure the application addresses all impact assessment criteria. The applicant lodges the application through the Development.i portal or directly with Gold Coast City Council.

After acceptance, Council progresses the application to public notification. The applicant places a public notice sign on the property during the notification period. Council also advertises the application on its website. As a result, the community can locate and read the proposal.

Any person may lodge a properly made submission during the notification window. A properly made submission must meet the requirements set out in the Planning Act 2016. Submissions must include the submitter’s name, address, and the grounds of the submission. Only properly made submissions carry appeal rights for the submitter.

After the notification period closes, Council continues its assessment. This may involve requests for further information from the applicant. In addition, referral agencies provide their responses during this period. Council then issues a decision notice outlining any conditions of approval or the grounds for a refusal.

What Homeowners Typically Do During Impact Assessment

  • Checking whether the proposed land use is code assessable or impact assessable in the relevant zone
  • Confirming which overlays apply and whether they increase the assessment category
  • Preparing a planning report that addresses all relevant codes and the Strategic Framework
  • Displaying the public notification sign for the full 15 business days required under the Planning Act 2016
  • Engaging a qualified town planner to respond to properly made submissions
  • Tracking the application through Development.i or Council’s online portal

Common Mistakes Homeowners Make

Many applicants underestimate the time impact assessment takes. Because public notification adds at least 15 business days, timelines extend well beyond code assessable development. Homeowners often assume Council will resolve the application in the same timeframe as a simpler approval.

Another common mistake involves failing to address all relevant assessment benchmarks upfront. Impact assessable applications require justification against multiple codes and the Strategic Framework. Submitting an application without a planning report often leads to information requests and further delays.

Some applicants also ignore the importance of the public notification sign. Council requires the sign to remain visible for the full notification period. Failing to maintain it correctly can create procedural problems with the application.

Furthermore, some homeowners are unprepared when neighbours lodge submissions. Receiving a submission does not automatically mean the application fails. However, a thorough planning response to submission concerns can strengthen the overall assessment.

Illustrative Example

The following is an illustrative, fictional example intended to show how a situation like this might be resolved; it is not a real case.

A fictional homeowner in a low-density residential zone proposes a dual occupancy on a lot affected by the flood overlay. The City Plan 2016 classifies this combination as impact assessable. As a result, the homeowner must go through public notification.

During the notification period, two neighbours lodge properly made submissions. Both submissions raise concerns about stormwater runoff and building height. The homeowner’s town planner prepares a written response addressing each concern using the flood overlay code and the relevant zone code. Council considers the planning merits alongside the submissions. Council approves the application with conditions relating to floor level height and drainage. The submitters receive the decision notice and their appeal rights under the Planning Act 2016.

This fictional scenario illustrates how public notification, submissions, and planning responses interact during impact assessment. The outcome in any real case depends entirely on its own facts.

When to Get Professional Help

Homeowners often engage a town planner when their project involves impact assessment for the first time. A qualified planner can identify which codes and overlays apply before the application is lodged. This helps surface potential issues early, rather than after public notification has already begun.

In addition, homeowners sometimes engage a planner specifically to respond to submissions received during notification. A formal written response addressing submission grounds can support the overall assessment. In certain circumstances, a lawyer experienced in planning law may also assist — particularly where appeal rights are in question.

Applicants dealing with referral agencies often find professional assistance valuable. Referral agencies carry their own assessment timeframes and documentation requirements. A town planner familiar with the relevant agency’s expectations can help prepare the necessary material.

Final Plain-English Takeaway

Impact assessable development is the highest-scrutiny category of development assessment in Queensland. The Planning Act 2016 and the Gold Coast City Plan 2016 together determine when a project falls into this category. Public notification is mandatory, and any person can lodge a formal submission. Council assesses the application against a broad range of planning benchmarks — not just a single code. Because of this, impact assessment takes more time and requires stronger planning justification than code assessment. Homeowners who understand the process early put themselves in a stronger position to prepare a thorough application.

This website provides general planning information only and is not legal, planning or design advice; homeowners, builders, owner‑builders and developers should seek qualified professional assistance for any decisions relating to their Development Application or building project.

FAQs

What makes a development impact assessable in Queensland?

The Planning Act 2016 and the relevant planning scheme together determine the assessment category. A development becomes impact assessable when the proposed land use is not listed as accepted or code assessable in that zone. In addition, certain overlays or thresholds under the City Plan 2016 can trigger impact assessment even for otherwise straightforward proposals.

How long does public notification last for impact assessable development?

Under the Planning Act 2016, the public notification period runs for a minimum of 15 business days. During this time, the applicant must display a public notice sign on the property. Council also advertises the application publicly so nearby residents can access and review it.

Can a neighbour’s submission stop an impact assessable development?

A submission alone does not stop a development. Council considers each properly made submission as part of its overall planning assessment. However, Council weighs submissions against the planning merits of the application. In certain circumstances, a well-founded submission may influence conditions or raise issues Council must formally address in its decision.

What is a properly made submission and why does it matter?

A properly made submission must include the submitter’s name, contact address, and the specific grounds of objection or support. Under the Planning Act 2016, only properly made submissions carry third-party appeal rights. This means the submitter may appeal Council’s decision to the Planning and Environment Court if they disagree with the outcome.

Does impact assessable mean the application will be refused?

Impact assessable does not mean refusal is the likely outcome. It means the proposal faces a broader and more detailed assessment process. Some impact assessable applications receive approval, sometimes with conditions attached. The outcome depends on how well the application addresses all relevant benchmarks under the City Plan 2016 and the Planning Act 2016.

Contact — DA Refusal Help QLD

For general information or referral to a qualified town planner, contact:

Aaron  — Client Liaison, DA Refusal Help QLD
Phone: 0477 767 423
Email: aaronbox193@gmail.com