Dual occupancy projects are often seen as a simpler entry point into development. In many cases, they are. However, planning approval can still be one of the most unpredictable stages of the process.

Many investors assume that if zoning allows two dwellings, approval will be straightforward. The reality is that council expectations, overlays, and design responses can vary significantly across Melbourne.

Understanding the common challenges early can help reduce delays, avoid redesign, and protect feasibility.

1. Neighbourhood character and design expectations

One of the most common reasons for planning objections or requests for changes is neighbourhood character.

Councils aim to ensure that new developments integrate with the surrounding streetscape. This can influence:

• Building height
• Setbacks
• Materials
• Roof forms
• Landscaping
• Garage positioning

Even when zoning supports dual occupancy, councils may require design changes that reduce floor area or alter layouts.

Experienced developers approach this strategically. Instead of maximising every square metre, they focus on designs that balance yield with approval success.

Early design collaboration between the architect, planner, and builder can significantly reduce risk in this area.

2. Overlays and planning controls

Planning overlays often have a greater impact than zoning itself.

Common overlays include:

• Heritage
• Vegetation protection
• Flood or environmental overlays
• Design and development overlays

These controls can affect:

• Building footprint
• Site coverage
• Tree removal
• Landscaping requirements
• Drainage solutions

A detailed planning review during feasibility helps avoid purchasing sites that appear suitable but become difficult or expensive to develop.

3. Parking and access requirements

Vehicle access and parking are frequent points of negotiation with councils.

Issues often arise around:

• Driveway width
• Turning circles
• Visitor parking
• Garage visibility
• Impact on existing streetscape

These constraints can influence site layout and the overall design approach.

On tighter sites, resolving access challenges early can prevent costly redesign later.

4. Neighbour objections

Neighbour objections are common in residential areas, particularly in established suburbs.

Objections may focus on:

• Overshadowing
• Privacy
• Bulk and scale
• Traffic
• Loss of vegetation

While not all objections prevent approval, they can delay the process or result in additional design changes.

Clear, well-considered designs that address overlooking, overshadowing, and streetscape impact from the outset tend to progress more smoothly.

5. Timeframes and uncertainty

Planning timelines can vary significantly between councils and individual projects.

Delays increase:

• Holding costs
• Interest
• Project stress
• Market exposure

Many first-time developers underestimate how these factors affect overall profitability.

Realistic timeframes and contingency allowances are essential when modelling feasibility.

6. Documentation and coordination

Incomplete or inconsistent documentation can slow approval or create confusion during assessment.

Common issues include:

• Poor coordination between consultants
• Incomplete reports
• Design changes late in the process
• Lack of clarity in planning submissions

Strong project coordination improves the likelihood of a smoother approval pathway.

A proactive approach to planning

The most successful dual occupancy projects take a proactive approach rather than reacting to council feedback.

This includes:

• Early planning advice
• Builder involvement during feasibility
• Realistic design responses
• Clear communication with consultants
• Alignment between planning, design, and construction

At delcon, we focus on understanding council expectations and buildability from the beginning. This reduces risk and provides greater certainty for developers.

Planning approval will always involve some level of complexity. However, with the right strategy, it can become a structured and predictable stage rather than a source of stress.

If you are assessing a potential development site in Melbourne, understanding these challenges early can help protect both timelines and profit.

Contact us today on: 1800 335266 or email: info@delcon.net.au