Can you build a duplex on residential property?
Yes, you can build a duplex on residential property in Sydney, but it depends on several key zoning and property requirements. Here's what you need to know:
Zoning Requirements:
Permitted Zones
R2 Low Density Residential (most common)
R3 Medium Density Residential
Some R1 General Residential zones
Check your Local Environmental Plan (LEP)
Property Requirements:
Land Size
Typically minimum 400-600m² (varies by council)
Width usually 12-15m minimum
Adequate depth for setbacks
Corner blocks often preferred
2. Development Controls
Floor Space Ratio (FSR) limits
Height restrictions
Setback requirements
Site coverage rules
Parking requirements
Private open space needs
Approval Pathways:
Standard DA Process
Development Application through council
Complying Development (if meeting all preset standards)
CDC through private certifier possible in some cases
2. Key Documentation Needed
Site analysis
Architectural plans
Shadow diagrams
BASIX certificate
Landscape plans
Statement of Environmental Effects
Important Considerations:
Before Proceeding
Check council zoning maps
Review DCP requirements
Get a Section 10.7 certificate
Consult with planning professional
Consider pre-DA meeting with council
2. Design Factors
Street presentation
Privacy for neighbors
Solar access
Vehicle access
Waste management
Stormwater drainage
Success typically depends on:
Understanding local planning controls
Good design that fits neighborhood
Professional assistance (architect/planner)
Early consultation with council