Utilities investigations and strategies to reduce diversion risk, control cost and protect programme.
Underground services are one of the most common causes of construction delay, expensive redesigns, and unplanned costs.
We provide Utilities Assessments and PAS128 surveys to identify, verify and interpret underground services. We go beyond simple mapping; we interpret the data to inform design development, procurement, and construction planning.
We don’t treat PAS128 surveys as a standalone product. We interpret utilities information through the lens of buildability and commercial risk, helping your team understand exactly what the data means for site viability. Our approach is designed to:
Where constraints exist, we work with design teams to explore alternative layouts, foundation solutions and earthworks approaches to reduce diversion scope and cost.
For project specific advice
Utilities investigations are scoped around where services materially affect design, cost and construction risk.
Utilities data is coordinated with layout, foundations, drainage and earthworks strategies.
Surveys and outputs are structured to support C3/C4 pricing, tender documentation and contractor engagement.
We develop utilities strategies that define diversion, protection, retention and phasing options.
Utilities Assessments and PAS128 surveys identify, verify and interpret underground services to inform design and construction planning.
A Utilities Assessment is the deep-dive research into existing service records, while a PAS128 Survey is the physical on-site detection used to map exactly what is buried beneath your feet.
PAS128 is the industry-recognised British Standard that ensures utility data is accurate, consistent, and reliable. By combining desk-based intelligence with site-side technology, we provide a clear, technical picture of the gas, electric, water, and telecoms assets that could otherwise derail your project.
We provide the missing link between a raw survey and a buildable design. Every assessment is tailored to the project stage and typically includes:
Utilities investigations influence design and construction from the earliest stages.
We provide early-stage risk screening to identify high-cost utility constraints before you commit. This ensures abnormal costs, like major high-voltage diversions, are factored into your initial land bid.
We use PAS128 data to lock down your site layout. By integrating utility data with foundation and drainage proposals early, we eliminate the need for expensive late-stage design changes.
We bridge the gap between survey data and the real world. Our support in C3/C4 scoping ensures that contractor pricing is accurate and utility company engagement is handled professionally.
Before works begin, we help define sequencing, protection, and diversion strategies. This proactive planning minimises strike risks and keeps your construction programme on track.
A high-level appraisal of site context, existing asset records, and your development proposals to identify early red flag constraints.
We define a targeted PAS128 survey scope, coordinating the delivery of C2 detection with strategic C3/C4 investigations where high-risk assets are present.
We provide technical interpretation of the survey data to develop clear utilities risk assessments and mitigation strategies.
Ongoing consultancy to integrate utility data into your layouts, foundation designs, and diversion planning, ensuring your tender documentation is accurate.
We provide the expertise to simplify complex challenges for faster approvals of tough planning requirements.
Still have any questions about utilities assessments or planning?
No. While a PAS 128 survey provides the data, our value lies in technical interpretation. We provide full utilities risk assessments and mitigation strategies to ensure the survey data actually informs your design and budget.
Absolutely. We take the technical lead on scoping and coordinating C3 (preliminary costings) and C4 (detailed estimates). We ensure the utility companies have the accurate data they need to provide realistic, timely quotes.
Yes. By identifying high-risk assets during the feasibility stage, we can work with your design team to adjust layouts or foundation types. This proactive approach often avoids the need for expensive diversions entirely.
Yes. We regularly interface with civil, structural, and MEP engineers. We also can work directly with contractors and utility providers to ensure everyone is working from the same set of verified constraints.
Yes, and we highly recommend it. Coordinating utilities assessments with Phase 2 Ground Investigations or earthworks planning ensures that your site investigation is safe and that any service constraints are factored into your geotechnical design.
