BCA Compliance for Development Applications: What Architects Need to Include

What Does a BCA Review for a DA Actually Assess?

A BCA review assesses the proposed building against requirements for its specific use, classification, and design. At the DA stage, the review usually covers building classification, key fire and life safety rules, access requirements, and design aspects that may not meet the NCC’s Deemed-to-Satisfy provisions.

A good BCA design review for a DA should answer practical questions for the design team, such as:

• Is the building classified correctly?
• Do the proposed exits and paths of travel work?
• Are fire separation and fire-resistance requirements likely to affect the design?
• Can the proposed access arrangements meet the relevant requirements?
• Are there design elements that need to change before the DA is lodged?
• Does any part of the design call for further specialist assessment?

The required level of detail depends on the stage of architectural documentation and the project’s scope. The NSW Planning Portal contains examples of BCA reports submitted with development applications that assess proposed designs against the BCA and identify cases requiring further attention at later stages.

What Should a BCA Report for a DA Cover?

A building code report for a development application should clearly demonstrate how the proposed design complies with relevant requirements.

Start With the Building Classification

Establishing the building classification is a critical first step, as it determines which NCC requirements apply. The requirements for a residential apartment building, for example, are not necessarily the same as those for a retail, office, education, or mixed-use development.

The assessment may also need to consider the number of storeys, floor areas, building height, and whether different uses or classifications occur within the development. For a mixed-use or more complex building, each distinct part needs to be considered in the context of its use and the way those areas interact.

Getting this right gives the rest of the BCA assessment a sound basis.

Review Fire and Life Safety

Fire safety considerations can impact the architectural layout early in the design process. An NCC compliance report for a DA may consider exit arrangements, travel distances, fire compartments, fire resistance, fire-isolated exits, and fire doors, depending on the project.

At the DA stage, the goal is to identify requirements that may affect the design. Detailed construction solutions can be developed later as needed. For example, modifying an exit arrangement is typically easier during floor plan development than after the design has been fully documented and coordinated.

Check Accessibility Alongside the Design

Accessibility should also be addressed during the development of the architectural design. Depending on the project, this can involve the accessible path from the site or parking area, building entrances, internal circulation, doorways, lifts, and accessible sanitary facilities.

Where the project requires a more detailed accessibility assessment, an access report for the development application may be prepared separately. The NSW Planning Portal provides examples of development applications that include separate access and accessibility reports alongside other technical documentation.

What Should Architects Check Before Lodging the DA?

The BCA review should give the architect clear answers about how the proposed design will perform once it moves into the next stage. Instead of reviewing drawings solely against individual NCC clauses, focus on questions that may prompt design changes.

A BCA report for a DA in NSW consolidates these issues, enabling the architect to identify which matters require immediate action and which can be addressed during later documentation. At the DA stage, the architectural information provided for review should generally include:

• Current architectural plans
• Site plan
• Elevations and building sections
• Floor areas and building heights
• Proposed use of each relevant area
• Proposed building classification
• Existing drawings for alterations or additions
• Previous approvals for an existing building, where available
• Relevant fire safety information
• Related consultant reports, where available

It is essential to provide the most current version of the design. If drawings or project details change after the review, an additional BCA assessment may be required.

When Does an Access Report Need to Be Considered?

A separate access report is beneficial when a project requires a more detailed accessibility assessment than the broader BCA review offers. The need will depend on the building, its use, and the complexity of the proposed access arrangements.

For example, projects with complex circulation, significant level changes, or extensive accessibility requirements may benefit from dedicated access consulting in addition to the broader BCA assessment.

It is important to determine the appropriate level of accessibility assessment before finalising the design, so findings can be incorporated into the architectural documentation.

What If the Design Cannot Meet a Deemed-to-Satisfy Requirement?

The NCC provides different pathways for demonstrating compliance. A Deemed-to-Satisfy Solution follows the relevant prescriptive provisions of the NCC. A Performance Solution takes a performance-based approach and must demonstrate that the relevant Performance Requirements have been met. The Australian Building Codes Board (ABCB) recognises both pathways, as well as projects that use a combination of the two.

This is relevant when a BCA review identifies a design that does not meet a specific Deemed-to-Satisfy provision. The project team can then consider whether the design should be amended or whether a Performance Solution is appropriate.

Where a Performance Solution is pursued, the process can involve a Performance-Based Design Brief, specialist analysis, and documentation demonstrating compliance with the relevant Performance Requirements. Identifying the need for this work during design development allows the architect to coordinate it with the rest of the project.

What Happens When an Existing Building Is Being Altered?

A BCA report for a NSW development application can also apply to an existing building, not just a new one. For alterations and additions, the proposed work needs to be reviewed along with the existing building. The state of current fire safety measures, existing approvals, and which parts of the building are affected all matter.

For example, an architect working on an alteration should check whether the changes affect an existing exit path or fire compartment, rather than looking only at the new work.

NSW’s building certification regulations contain specific requirements for the assessment of existing buildings affected by proposed development. This makes early review particularly useful for alteration and addition projects. The BCA consultant can then point out which existing conditions need to be addressed in the proposed development and which can remain as they are.

When Should an Architect Get a BCA Design Review?

Timing can make a big difference in how easily a BCA issue can be solved.

1. A review early in the design process can spot constraints that might affect the basic layout
2. Reviewing the developed design before submitting the DA can catch any remaining compliance issues before the drawings are lodged
3. Another review before construction documentation can confirm that earlier BCA feedback has been included and highlight any issues that still need to be resolved

For architects, identifying compliance issues while the design remains flexible provides the project with more options.

BCA Report vs Access Report vs Performance Solution

These documents can be used together on a project, but each one answers different questions.

A project may require one or more of these documents, depending on its design and compliance needs. It is important to determine the necessary assessments early to guide the architectural documentation.