PAS:128 Underground Utility Surveys

Overview

Greenhatch Group delivers PAS 128 underground utility surveys across the UK, providing accurate underground utility mapping and utility detection surveys to support and provide the confidence needed to design, plan and build safely. Our PAS 128 compliant utility surveys reduce risk, prevent costly delays and protect people, assets and programmes across the built environment.

Our underground utility surveys are delivered to the appropriate PAS 128 Quality Levels (QL-D, QL-C, QL-B and QL-A), combining desktop utility record searches, site reconnaissance, geophysical utility detection and intrusive verification where required.

Brief Summary of PAS:128

PAS:128 (2022) is the UK specification for the detection, verification and mapping of underground utilities. Published by the British Standards Institution (BSI), it defines a consistent, risk-based approach to locating buried services, setting out survey methods, quality levels and reporting requirements. The standard enables clients and project teams to understand the accuracy, limitations and confidence of underground utility data, helping to reduce risk, improve safety and support informed design and construction decisions.

Greenhatch Group uses industry-proven utility detection and survey technologies to deliver reliable PAS:128-compliant underground utility surveys. Our approach combines multiple complementary methods to ensure utilities are accurately identified, located and clearly reported.

Industry-proven electromagnetic location (EML), ground penetrating radar (GPR) and survey-grade positioning technologies used to deliver accurate PAS:128-compliant utility data.

Accurate, detailed drawings of underground services/utilities

Standard or Enhanced Statutory Records Search Report (QL-D)

2d & 3D CAD drawings

120+

Committed in-house team

Employees, full training via CICES & custom programmes.

35+

Years of experience

Pioneering surveying excellence from Derby to Newcastle, across the UK.

7000+

Surveys conducted

Starting from topographical to BIM models, a variety of surveys are conducted till date

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Get fast, reliable data you can build on. Our expert team delivers accurate results, backed by technology, insurance, and personal service that keeps your project on track.

When you choose us, you’re choosing a partner who understands the pressures of tight deadlines, strict compliance, and complex sites. From heritage buildings to large-scale developments, we provide the accuracy and confidence you need to design and build without costly setbacks.