Contour Survey Sydney
Water doesn't care about your plans - it follows gravity. That's why engineers need contour surveys before designing drainage, retaining walls, or earthworks. We map your site's natural levels in precise detail, creating contour lines that show exactly how your land slopes and where water will flow.
- Local Sydney Team
- Same Week Availability
- Obligation-Free Quotes
Map Every Rise and Fall
A contour survey captures your site's three-dimensional shape as a series of contour lines - each line connecting points of equal elevation. Engineers use these to design drainage that works with gravity, calculate cut and fill volumes for earthworks, and position retaining walls at optimal heights. Sydney's challenging topography - from steep slopes in the North Shore to tidal areas around waterways - makes accurate contour data essential for compliant development. Under the Environmental Planning and Assessment Act 1979, councils require contour surveys for most residential and commercial DAs where grading, drainage, or significant earthworks are proposed. Our surveys capture AHD (Australian Height Datum) levels across your entire site, typically at 0.1m to 0.5m contour intervals depending on terrain and purpose. We map existing surface features including trees, structures, fences, and service pits, giving your design team a complete picture. The data is processed into CAD format compatible with all major design software packages including AutoCAD, Civil 3D, and ArchiCAD. For larger sites or complex terrain, we deploy terrestrial laser scanning to capture millions of data points, creating a true 3D model of your land. Councils across Greater Sydney including Inner West, Northern Beaches, Bayside, and Canterbury-Bankstown accept our contour plans for DA submission.
Contour Mapping
Precise contour lines at 0.1m to 0.5m intervals across your site.
Drainage Design
AHD levels and flow paths for stormwater engineering.
Cut & Fill Data
3D surface models for earthworks volume calculations.
DA Ready
Formatted to meet Sydney council requirements for submission.
Capturing Site Topography
Our robotic total stations and GPS equipment capture thousands of level readings across your site. The result is accurate contour plans engineers rely on for drainage and earthworks design.
Our Survey Process
Site Survey
Field team captures AHD levels at key points across your property using GPS and total stations.
Data Processing
Raw survey data processed into a 3D surface model with contour lines.
CAD Drafting
Professional contour plan drafted showing levels, contours, and existing features.
Delivery
PDF plans and DWG files sent to you, your engineer, and architect.
What You Receive
You will receive a digital PDF Survey Report prepared by our surveying team.