Dual Occupancy Survey Sydney
Sydney's housing crisis has made dual occupancies and granny flats attractive options for homeowners. Whether you're building a detached granny flat in the backyard or developing a full duplex for subdivision, you'll need survey work at multiple stages - from the initial boundary survey for DA submission to final subdivision if you're creating separate titles.
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Navigate Dual Occupancy Requirements
The Environmental Planning and Assessment Act 1979 and State Environmental Planning Policy (Housing) 2021 allow dual occupancies and granny flats across most of Sydney with varying controls by council. These developments trigger specific survey requirements that differ from single dwelling projects. First, you need a boundary and detail survey showing your lot dimensions, existing structures, and site features. Councils require this for DA assessment - they check minimum lot size (often 450-600m2 for dual occupancy), setbacks, and solar access compliance. If you're building a detached granny flat or secondary dwelling, the survey must show the proposed building position meets required setbacks from all boundaries. For attached or semi-detached dual occupancy (duplex), Council wants to see how you'll divide the lot if subdividing later. Second, during construction you'll need setout surveys to mark building corners and slab positions. This ensures your builder constructs in the DA-approved location and maintains required boundary clearances. Third, if creating separate titles for each dwelling, you'll need a subdivision survey. This can be Torrens title (separate land parcels for detached duplexes) or strata title (for attached duplexes or where there's shared access/services). We guide Sydney clients through the survey requirements for dual occupancy from initial DA through to separate titles, working with councils from Inner West to Northern Beaches.
Boundary Surveys
Initial boundary and detail surveys for DA submission showing lot compliance.
Construction Setout
Building corner marking to ensure each dwelling sits in the approved position.
Subdivision Plans
Torrens or strata subdivision to create separate titles for each dwelling.
Compliance Checks
Verification surveys showing built dwellings match DA setback requirements.
Dual Occupancy Surveys
We provide end-to-end survey services for dual occupancy projects - from initial site surveys through construction setout to final subdivision. Our experience with Sydney councils ensures smooth approvals.

Our Survey Process
Pre-DA Survey
Boundary and detail survey showing existing conditions and demonstrating development compliance.
Construction Setout
Marking building positions for each dwelling to ensure compliance with approved plans.
As-Built Verification
Survey of completed buildings confirming setbacks and heights match DA approval.
Subdivision (Optional)
If creating separate titles, we prepare and lodge Torrens or strata subdivision plans.
What You Receive
You will receive a digital PDF Survey Report prepared by our surveying team.
