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As Built Underground Services Surveys Sydney

Accurately record what has been installed underground.

  • Certified as built utility plans ready for council and asset owner submission
  • Accurately record installed underground services before project handover
  • Fast turnaround and CAD-ready deliverables for smooth closeout
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Professional As Built Records

MCS Surveyors provide professional as-built underground services surveys to verify the exact location, depth, and alignment of installed subsurface infrastructure. Whether you are completing a civil, commercial, or residential project, our surveys provide the documentation required by councils, asset owners, and developers for final approvals and long-term utility management.

Accurate as built records are essential for confirming that services have been installed according to design specifications and safety requirements. They also play a critical role in reducing risk during future excavation, maintenance, or upgrades. Our experienced team delivers precise, reliable survey data in a format that is easy to interpret and ready for submission.

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What Is an As Built Underground Services Survey?

An as-built underground services survey, also known as an as-constructed or post-construction utility survey, captures the actual location and depth of newly installed subsurface infrastructure. It is conducted after construction or installation is complete and provides a detailed map of how the services have been laid in the field compared to the original design.

This survey is required to verify that underground services meet regulatory and engineering requirements. It also ensures that infrastructure can be easily located in the future, reducing the risk of service strikes or design conflicts. At MCS Surveyors, we produce high-quality, certified as built documentation that meets council and utility authority expectations.

When and Why These Surveys Are Required

As Built surveys for underground services are commonly required in the following situations:

  • Completion of new utility installations such as water, sewer, gas, electrical, and communications
  • Submission of documentation to local councils or utility providers
  • Handover of infrastructure to asset owners or management bodies
  • Preparation for future development, design changes, or maintenance
  • Verification of clearances, alignment, and construction accuracy

By engaging MCS Surveyors for your as built utility survey, you can be confident that your project will meet all compliance requirements and provide long-term value to stakeholders.

What Our Surveys Include

Our as-built underground services surveys provide detailed, accurate information about all key elements of the installed infrastructure. This typically includes:

  • Horizontal and vertical position of underground services
  • Depth of cover to the top of conduits, pipes, or ducts
  • Accurate alignment and routing of services
  • Locations of access pits, junction boxes, valves, and bends
  • Identification of service types such as electrical, water, sewer, or telecommunications
  • Cross-referencing with approved design plans and site control
  • CAD and PDF plans ready for council, engineering, or asset owner submission

Each survey is customised to suit the type of infrastructure installed and the level of detail required. We work closely with contractors and project managers to capture all relevant data before backfilling or project closeout.

How We Conduct As Built Underground Services Surveys

At MCS Surveyors, we use a combination of traditional and modern surveying techniques to deliver accurate and reliable results. Our process involves:

Initial Site Review and Planning

We review the approved design drawings and installation records where available, along with any construction logs or trenching documentation. This helps us understand the expected service alignment and depth.

On-site Measurement and Verification

Using total station, robotic survey instruments, and GNSS equipment, our team records the physical location of subsurface infrastructure as observed through open trenches, exposed pits, or surface access points. We can also incorporate trench measurements before backfilling is completed to ensure precision.

Data Processing and Quality Checks

Survey data is processed and cross-checked against the original design plans to verify accuracy. Any variances are flagged for review or commentary, helping project teams understand and address changes or deviations from design.

Delivery of Certified Plans

Final as built plans are prepared in CAD and PDF formats and clearly annotated with service types, depths, and horizontal positions. We prepare the deliverables to meet the specific requirements of councils, utility authorities, and design teams.

All surveys are completed in accordance with the Australian Standard AS5488 for subsurface utility information, and we provide quality levels based on the method and accuracy of data collection.

Services We Survey

Our as built underground services surveys can be used to capture any subsurface utility or infrastructure element, including:

  • Water mains and sewerage pipes
  • Electrical conduits and power cables
  • Telecommunications and NBN fibre ducts
  • Gas pipelines
  • Stormwater drains and retention systems
  • Junction pits, access chambers, and manholes
  • Redundant or relocated service alignments

We are also able to document mixed service corridors, complex reticulation systems, and multi-stage utility installations across large subdivisions or infrastructure projects.

Why Choose MCS Surveyors?

MCS Surveyors is a trusted provider of underground utility surveys across Sydney and New South Wales. With over three decades of combined experience, our team understands the technical, regulatory, and logistical requirements of as built documentation.

  • Experienced Team

    Our surveyors are highly trained and experienced in capturing utility infrastructure accurately and efficiently. We know how to work with contractors, civil engineers, and authorities to keep projects moving forward.

  • Certified Results

    All surveys are conducted in line with AS5488 and project-specific requirements. We provide fully certified documentation suitable for design verification, approvals, and asset registration.

  • Responsive and Reliable

    We pride ourselves on our ability to mobilise quickly, deliver fast results, and communicate clearly throughout the process. We understand the importance of accurate data and prompt reporting at the end of a project.

  • Tailored Deliverables

    We provide flexible reporting options to suit your needs, including detailed plans, mark-outs, and electronic files formatted for integration into asset databases or design systems.

Related Services

To support a complete underground utility solution, we also provide:

Our services can be combined to deliver a full project lifecycle solution from early design through to final handover.

Get in Touch

0422 398 044
info@mcsurveyors.com.au
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