Whether you’re planning a residential extension or a large-scale commercial development, understanding what’s buried beneath a site is one of the most important steps before groundworks begin. Underground utility mapping identifies the position and depth of buried services, giving your project team the confidence to plan excavation, drilling or piling work safely. Where a project needs a wider check covering drainage and structural features too, this can be expanded into a full Underground Services Survey.

Utility infrastructure is often added, repaired and extended in stages over many years, sometimes without records being kept fully up to date. This is particularly relevant for renovation, extension and infill development projects on older sites, where the age of the surrounding infrastructure often means existing records are less reliable than you’d hope. Even more recently installed services aren’t always immediately reflected in current records either, which is why we treat every site with the same level of care regardless of how old or new the surrounding development is.

We combine electromagnetic detection and GPR to build an accurate picture of what’s buried beneath a site. Electromagnetic detection traces live cables and metallic pipes by following their signal, while GPR identifies non-metallic services, voids and other subsurface features that electromagnetic methods alone would miss. Using both together means our surveys aren’t limited by the blind spots either method has on its own.

We carry out underground utility mapping for projects of all scales, from single residential extensions through to larger commercial or multi-unit developments. Where a project needs a broader Underground Services Survey covering drainage, structural features and utilities together, rather than utility mapping alone, we can extend our approach to give a fuller picture of the site. For sites where electromagnetic detection is the priority, our EML Buried Service Underground Utility Surveys offer a more targeted approach, tracing live cables and metallic pipework specifically.

Subvision Surveys is SSIP and ISO accredited, with a team of over 25 surveying professionals delivering underground utility mapping and underground services survey work for contractors, developers and private individuals across Essex and the wider South East.

Contact Subvision Surveys today to discuss underground utility mapping for your project, or speak to one of our experts on 0333 920 942.