Construction Surveying for Homeowners, Builders, Developers & Industry

Construction Surveys

Andy Isaac Consulting Surveyor in Eimeo, QLD, provides professional construction surveying services that ensure buildings, structures and infrastructure are positioned accurately on site from the very beginning of a project.

Construction surveying is the critical link between design plans and what is physically built on the ground. No matter how well a project is planned and designed, it must be transferred to the site with precision so that walls, footings, slabs, services and structures are placed exactly where they are intended to be. Even small positioning errors can create major problems, including non-compliance with approvals, structural issues, drainage failures or costly rework.

Construction surveys provide the reference points and control marks that builders and contractors rely on throughout the build process.

Site Contour & Detail Surveys

Before any construction can begin, it is essential to understand the existing conditions of the land. A contour and detail survey is typically the first stage in the construction surveying process, providing the foundational information required for accurate design and planning.


A contour survey maps the natural shape and levels of the land, showing slopes, high and low points, and elevation changes across the site. These contours allow designers, engineers and architects to plan building placement, drainage solutions, earthworks and finished floor levels with confidence.

A detailed survey records existing physical features both on and around the site. This may include:


  • Existing buildings and structures
  • Fences and retaining walls
  • Driveways and paved areas
  • Trees and vegetation
  • Services such as power poles, pits and stormwater infrastructure
  • Adjacent property features that may impact the design


Together, contour and detail information provides a comprehensive picture of the site’s current conditions. This data is used to prepare accurate design drawings, assess potential constraints and ensure compliance with council requirements before construction begins.

Construction Set-Out Surveying

A set-out survey involves marking the exact locations of structures and key points on the ground, based on approved plans and design drawings. This gives builders a physical guide to follow when excavating, forming footings, pouring slabs or erecting structures.

These marks may include:

  • Building corners
  • Wall lines
  • Grid lines
  • Offset marks
  • Control points for height and position

This process ensures that construction begins in the correct location and follows the approved design.

As-Built & Verification Surveys

As construction progresses, as-built surveys may be required to confirm that what has been constructed matches the design plans. These surveys provide documented evidence of compliance and are often required for certification, handover or regulatory purposes.

They are particularly important for:

  • Civil works
  • Commercial buildings
  • Infrastructure projects
  • Retail developments
  • Wind farms and large-scale installations

Supporting Projects of All Sizes

Construction surveys are not limited to large developments. They are equally important for:

  • New homes
  • Extensions
  • Sheds and garages
  • Driveways
  • Retaining walls
  • Small commercial buildings

Every structure benefits from being set out correctly from the start.

Working Alongside Builders & Contractors

Active construction sites are busy environments that require coordination between multiple trades. Construction surveying must be completed efficiently and accurately to avoid delays and allow other work to proceed.

Clear communication and practical understanding of how builders work ensure survey marks are placed where they are most useful and easy to reference during construction.

Avoiding Costly Mistakes

One of the main reasons construction surveys are so important is the prevention of errors.

A building placed even slightly out of position can lead to:

  • Encroachment onto boundaries
  • Non-compliance with council approvals
  • Structural alignment issues
  • Drainage problems
  • Expensive demolition and rework

Accurate set-out at the beginning of a project eliminates these risks.

Suitable for Complex & Large-Scale Projects

Experience working on civil projects, retail developments, wind farms and large construction sites means surveying can be adapted to suit projects with higher complexity, tighter tolerances and greater coordination requirements.

Construction Surveys FAQs

  • When should a construction survey be done?

    A set-out survey should be completed before any excavation or building work begins to ensure accurate positioning.

  • What information is needed before setting out?

    Approved plans and design drawings are required so the correct positions can be transferred to the site.

  • Are height levels included in construction surveys?

    Yes. Control levels are provided to ensure correct slab heights, drainage fall and structure alignment.

  • What is an as-built survey?

    An as-built survey confirms the final position of structures after construction to verify compliance with plans.

  • Is a construction survey necessary for small projects?

    Yes. Even small structures benefit from accurate positioning to avoid future issues.

  • Can surveying be done during different stages of construction?

    Yes. Surveys can be performed at multiple stages as required throughout the project.

Call 0448 222 230 to schedule precise construction set-out and as-built surveys.