This case study highlights a complex residential project in Officer, Victoria, where DE WALKERS was engaged exclusively during the design and planning stage. The project site was a semi-urban residential allotment exceeding 1,000m², located adjacent to a heavily vegetated government-owned reserve managed by Parks Victoria.
Although the project did not proceed to construction under DE WALKERS due to financial and risk considerations, the design phase provided a strong example of how early technical assessment and compliance-driven decision-making can significantly influence project feasibility.
Site Conditions & Environmental Constraints
The property was positioned in a bushfire-prone area under a Bushfire Management Overlay (BMO), requiring a detailed Bushfire Attack Level (BAL) assessment in accordance with AS 3959 Construction of Buildings in Bushfire-Prone Areas and CFA guidelines.
Key site characteristics included:
- Located in a semi-urban fringe zone of Officer township
- Northern boundary directly adjoining dense forest reserve vegetation
- Sloping terrain with driveway access approximately 15 metres in length at an average gradient of 20 degrees
- Limited accessibility conditions for emergency firefighting vehicles
- Fire hydrant infrastructure located within 120 metres of the site (extreme east boundary)
- Proximity to accessible township evacuation routes approximately 3 minutes southeast
A full site analysis was undertaken by DE WALKERS, including vegetation mapping, slope analysis, access constraints, and evaluation of defendable space within a 150-metre buffer zone.
Bushfire Risk Assessment & BAL Determination
DE WALKERS engaged a qualified Bushfire Attack Level assessor to evaluate the site in accordance with regulatory requirements. The surrounding forest environment, combined with slope conditions and access limitations, resulted in a significantly elevated bushfire risk classification.
Although the presence of nearby fire hydrants provided some infrastructure support, the overriding risk factors included:
- Dense unmanaged vegetation within the adjoining reserve
- Restricted ability to maintain consistent defendable space due to government-controlled land
- Challenging topography affecting emergency access and evacuation response
- Limited capacity to rely on external firefighting response during peak fire conditions
Based on these combined factors, the site was assessed at BAL 40 classification, requiring a high level of bushfire-resistant construction detailing.
A theoretical reduction to BAL 19 was considered; however, this would have required significant vegetation modification within government-controlled land, which was outside the owner’s control and therefore not feasible.
Design Recommendations & Risk Mitigation Strategy
To improve resilience and compliance, DE WALKERS developed a number of design-stage recommendations, including:
- Provision for a dedicated 10,000-litre firefighting water tank
- Clear definition and maintenance of defendable space around the dwelling
- Access planning considerations aligned with emergency vehicle limitations
- Design responses aligned with BAL 40 construction requirements under AS 3959
- Strong emphasis on occupant preparedness and early evacuation planning
A key principle reinforced during the design process was that in high-risk bushfire environments, early evacuation remains the safest and most reliable response strategy, rather than reliance on emergency services during peak fire events.
Outcome & Project Decision
Despite progressing through an extensive 14–18 month design and advisory phase, it became clear that the cumulative cost of compliance upgrades, construction requirements, and environmental constraints placed the project outside the owner’s financial feasibility.
Following detailed discussions and transparent risk assessment, DE WALKERS provided an honest recommendation that the project should not proceed in its current form. Instead, the client was advised to consider divesting the property.
This decision was not taken lightly; however, it reflected DE WALKERS’ core philosophy:
At DE WALKERS, we believe responsible guidance and protecting our clients’ long-term interests are more important than proceeding with a project that may not be financially or practically viable.
The property was subsequently sold, and the client has since continued to engage DE WALKERS on a separate project under more suitable conditions.
Key Learnings
This project reinforces several important principles in complex residential development:
- Early-stage bushfire and compliance assessment is critical in high-risk zones
- BAL outcomes can significantly impact feasibility and cost structure
- External land control (such as government reserves) can limit mitigation optionsHo
- nest feasibility advice protects clients from long-term financial risk
- Responsible design consulting is as valuable as construction delivery
While this project did not proceed to construction, it demonstrates the importance of technical due diligence, regulatory understanding, and ethical decision-making in residential development.
At DE WALKERS, we do not pursue projects for the sake of construction alone. We focus on ensuring every development is safe, compliant, and financially viable for our clients.
We Build the Trust.