
Ad Hoc Surveys
Solve unexpected structural challenges with custom mapping. We execute flexible ad hoc surveys to deliver specific elevation datums, clearance metrics, and targeted site data fast.
What are Ad Hoc Surveying Services?
An ad hoc survey-often called a custom land survey or a specialised surveying sydney project-is any one-off measurement task that does not fit into standard surveying packages. Instead of mapping an entire property or marking out an entire house frame, this service targets a specific technical question on your land. Our field crews visit your property with advanced digital tools to isolate and measure the exact elements you need to inspect. We then turn this fieldwork into clear, easy-to-read plans or reports. This allows your architectural team, builder, or legal representative to make safe decisions based on absolute mathematical facts.
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Tailored Surveying Options for Unique Challenges
We provide flexible, targeted spatial solutions across Greater Sydney to help clear up unexpected property queries:
Height and Elevation Datum Checks
We verify specific building elements, roof ridges, or ground points relative to official Australian Height Datum (AHD) levels. This is vital for proving to your council that a new extension or roofline stays within local height limits.
Structural Clearance and Offset Checks
Designed for builders working right next to existing structures or walls. We take precise measurements of the physical gaps, column placements, or structural offsets, keeping your excavation work safe from nearby assets.
Specialised Land Feature Mapping
Tailored for landscape architects, builders, and engineers working on difficult blocks. We capture specific physical details like large rock shelves, old retaining wall shapes, or custom concrete footings that standard surveys might skip.
When is a Custom Survey Required?
Land and building projects in Greater Sydney often throw up unexpected layout or design challenges. A custom site measuring job is usually required in the following scenarios:
- Answering Specific Council Questions: If your local council pauses your application and requests verified proof of a highly specific physical height, view line, or clearance, a custom survey provides the exact drawing they need.
- Verifying Sub-Contractor Work: Project managers use custom site checks to test that structural pillars, concrete columns, or deep footings are in perfect alignment before allowing the next phase of construction to begin.
- Pre-Purchase Investigations: If you are looking to buy an unusual lot with strange land shapes or old structures, custom mapping reveals the true layout challenges before you sign a contract.
The East West Advantage for Custom Work
- BOSSI Registered Surveyor Oversight: In New South Wales, certified property and building measurements must carry the legal authority of a Registered Land Surveyor to stand up in court or council reviews. Our qualified specialists ensure your custom data is legally sound and fully compliant.
- Flexible and Adaptive Scheduling: We don't force you into a rigid, pre-packaged blueprint. We listen to your exact structural problem, figure out a targeted field plan, and deliver the specific files you need-saving you both time and extra admin costs.
- Upfront Costing Transparency: We operate with a strict fixed-price policy. Every quote is compiled following extensive pre-survey document tracking, giving you a completely transparent project rate with no admin surprises or unexpected variations.
Ad Hoc Survey FAQs

Get Clear Data for Your
Custom Project
Don't risk your building design, council submission, or layout accuracy on guesswork or manual measurements. Partner with East West Surveyors to get clear, dependable math facts for your site. Fill out the form below, and our Epping office will prepare a fixed-price proposal within 1 business day.
