Surveying FAQ's Melbourne
Clear answers to common questions about construction surveying, setout, and site services.
Trusted by builders, contractors, and developers across Melbourne.
Understanding Construction Surveying
What does a surveyor actually do on a construction site?
A construction surveyor ensures everything is built in the correct position, level, and alignment based on design drawings.
On a typical project, this includes:
- Setting out gridlines, walls, and columns
- Transferring levels across floors using TBMs
- Checking slab heights and profiles
- Verifying structural elements after installation
In simple terms, we take what is on the drawings and translate it into accurate positions on site so trades can build correctly.
When should a surveyor be engaged on a project?
A surveyor should ideally be involved from early site setup through to project completion.
Key stages include:
- Establishing site control
- Initial gridline setout
- Ongoing setout during structure
- As-built verification and final checks
Bringing a surveyor in too late often leads to rework, delays, and unnecessary costs.
What is setout in construction?
Setout is the process of marking the exact position of structural elements from drawings onto the site.
This can include:
- Columns and bolt locations
- Walls and edge beams
- Precast panels
- Service penetrations
- Steel elements
Setout is one of the most critical stages of construction because it directly affects how the entire structure is built.
What happens if setout is wrong?
Incorrect setout can lead to serious issues on site, including:
- Structural elements being out of tolerance
- Clashes between trades
- Costly demolition and rework
- Project delays
Even small errors can compound quickly across a build, which is why accurate surveying is essential.
Accuracy, Control and Site Coordination
How accurate is construction surveying?
Construction surveying is typically carried out to millimetre-level accuracy, depending on project requirements.
We use high-precision equipment and consistent workflows to ensure accuracy is maintained across all stages of the build.
How do you manage cumulative errors across a build?
Good surveying is not just about accuracy, it is about control.
We:
- Establish reliable site control networks
- Regularly check and adjust control points
- Verify key elements before proceeding
- Communicate early if something is out
This prevents small issues becoming major problems later in the project.
Do you work directly with site teams?
Yes. We work closely with:
- Site managers
- Foremen
- Engineers
- Formwork and concrete crews
We understand how construction sites operate and adapt to sequencing, pours, and program pressures.
Survey Types and Their Purpose
What is a feature and level survey used for?
Feature and level surveys capture existing site conditions for design and planning.
They typically include:
- Ground levels and contours
- Buildings and structures
- Services and site features
- Boundaries where required
These surveys are used for:
- Planning permits
- Architectural design
- Engineering design
What is an as-built survey?
An as-built survey records what has actually been constructed on site.
This includes checking:
- Slab levels and profiles
- Column positions
- Wall alignments
- Steel and precast installation
Why are as-built surveys important?
As-built surveys are important because they:
- Confirm compliance with design
- Provide documentation for handover
- Identify issues early
- Reduce risk for builders and developers
They give project teams confidence that construction has been completed correctly.
Site Control and Levels
What is site control and why is it important?
Site control provides a consistent reference system across the entire project.
Without proper control:
- Trades work from inconsistent points
- Errors compound
- Accuracy is compromised
Good site control is the foundation of reliable construction surveying.
What is a TBM?
A Temporary Benchmark (TBM) is a fixed level reference point used to transfer heights across a site or between floors.
It ensures all vertical measurements remain consistent throughout the build.
Costs, Projects and Flexibility
How much does a construction survey cost in Melbourne?
Costs vary depending on scope, timing, and site complexity.
Typical pricing structures include:
- Per pour
- Per item
- Per level
- Lump sum or staged pricing
Can you be flexible on pricing?
Yes. We understand every project is different and can structure pricing to suit the job, timeline, and scope.
Do you work on ongoing projects?
Yes. Many of our projects run over several months, with regular site attendance aligned to construction sequencing.
Do you work on residential projects?
Yes. We provide:
- Title re-establishment surveys
- Feature and level surveys
- Setout for new homes and extensions
Do I need a survey before building?
In most cases, yes. Surveying is required for:
- Design accuracy
- Planning approvals
- Construction setout
Working With Base Surveys
What makes Base Surveys different?
- Over 20 years industry experience
- Degree-qualified surveyors
- Strong understanding of construction workflows
- Practical, site-focused approach
- Reliable and responsive service
How quickly can you attend site?
We aim to be highly responsive and can often attend on short notice depending on workload and project requirements.
Can you work off our drawings directly?
Yes. We regularly work from architectural, structural, and shop drawings and can coordinate with engineers where required.
Can you adjust setout if design changes on site?
Yes. We understand that changes happen and can quickly adapt and reissue setout as required.
Do you provide CAD files and documentation?
Yes. We provide clear survey drawings and can integrate with existing CAD workflows where needed.
Need a Surveyor for Your Project?
If you need a reliable, practical surveying partner in Melbourne, Base Surveys can assist.
We work closely with builders, contractors, and consultants to deliver accurate, efficient, and buildable outcomes on site.