Underground Utility Surveys map subsurface infrastructure using Ground Penetrating Radar (GPR), radio‑detection, and complementary geophysical techniques. These results are integrated with land survey control to produce accurate 2D/3D drawings, models, reports, or on‑site mark‑ups of buried utilities.
Underground utility surveys provide accurate, PAS 128 Compliant Utility Survey of buried services to reduce excavation risk, prevent service strikes, and support safe, informed design decisions. Using GPR, radio‑detection, and chamber inspections, we deliver reliable subsurface data for every project type.
Our utility detection workflow combines multiple complementary technologies to ensure the most accurate, reliable, and verifiable understanding of subsurface conditions before any design or excavation begins. Each technique plays a specific role in identifying, tracing, and validating underground services, allowing us to build a comprehensive and PAS 128‑compliant subsurface model.
We deliver all utility surveys in accordance with PAS 128 — the leading standard for utility detection, verification, and location in Ireland and the UK. PAS 128 Survey Types:
We make the surveying process simple, transparent, and stress‑free from start to finish.
Share your project requirements and site details with our team.
We prepare a clear cost estimate and project timeline based on your scope.
Our field specialists attend your site and capture the precise data you need.
Our technical team processes, analyses, and interprets your data to industry standards.
Your completed dataset, reports, and deliverables are reviewed and handed over by our survey managers.
Clear, practical answers to the most common questions about underground utility detection, PAS 128 compliance, and subsurface mapping.
Underground Utility Surveys significantly reduce the risk of striking buried services during construction. By identifying the location, depth, and type of utilities on‑site, you avoid costly delays, service outages, safety hazards, and potential legal liabilities.
We use a combination of Ground Penetrating Radar (GPR), radio‑detection, chamber inspections, and land survey control. Each method provides different insights, and when combined, they deliver a more accurate and reliable subsurface model.
PAS 128 is the industry standard for underground utility detection, verification, and location in Ireland and the UK. It defines survey quality levels and ensures consistency, traceability, and reliability across all utility mapping projects. Utilistics Limited delivers all utility surveys in full compliance with PAS 128.
Survey duration depends on site size, complexity, access, and the required PAS 128 level. Small sites may be completed in a day, while larger or more complex environments may require several days. We provide clear timelines during the proposal stage.
While modern detection technologies are highly effective, no method can guarantee 100% detection of all utilities. Factors such as soil conditions, material type, depth, and site congestion can affect results. However, by combining multiple techniques and PAS 128 methodology, we achieve the highest possible confidence levels.
After your underground utility survey, you’ll receive a complete, project‑ready deliverable pack designed to give you clarity, confidence, and compliance before any excavation or design work begins. This typically includes:
Utility Survey Report — A clear summary of findings, methodologies used, survey limitations, and confidence levels based on PAS 128 standards.
Utility Mapping Drawings (2D/3D) — CAD‑ready drawings showing the position, depth, and type of detected utilities, colour‑coded and layered for easy integration into your design workflow.
Georeferenced PDF Plans — Easy‑to‑share plans for contractors, designers, and site teams.
Digital Data Files — DWG, DXF, SHP, or other formats required for BIM, GIS, or engineering design environments.
GPR Scan Outputs (where applicable) — Interpreted radargrams and annotations showing key subsurface features.
2 Bridge St, Athlone, Co. Westmeath, N37 F1W4
+353 (090) 640 3114
info@utilistics.ie
Mo - Fri : 08:00am - 17:30pm
Sat : 09:00am - 14:00pm
