Cornwall’s landscape and history bring a different set of challenges to underground utility mapping than most of the counties Subvision Surveys works in, from granite-heavy ground to a legacy of mining that runs deep beneath large parts of the county.

Much of Cornwall sits on granite bedrock, which behaves differently under GPR to the sedimentary ground found across much of the South East, generally offering good signal penetration but requiring careful interpretation where mineral content varies. Cornwall’s long mining history adds a further layer of complexity in many areas, with old mine workings, shafts and associated infrastructure sometimes present well beneath standard utility depth, particularly around former tin and copper mining areas. Understanding this context matters when planning any survey or subsequent groundworks across the county.

Cornwall’s population is spread across a mix of coastal towns, including Truro, Falmouth and St Austell, and more rural, dispersed development inland. Coastal towns often carry older infrastructure shaped by the geography of narrow streets and centuries of settlement close to the water, while rural sites can have far sparser utility records simply because fewer services have historically been required or documented in less densely populated areas. Our surveyors adjust their approach to reflect which of these contexts a site falls into.

Cornwall’s economy and development pattern are heavily shaped by tourism, and a significant amount of construction and renovation work relates to holiday accommodation, second homes and seasonal business premises. These projects often have tighter timescales tied to the tourist season, and an accurate utility survey carried out early helps avoid delays that could push work into a period when contractors and access become harder to arrange.

Subvision Surveys is SSIP and ISO accredited, with a team of over 25 surveying professionals delivering underground utility mapping across Cornwall, Durham and the wider South West. Contact Subvision Surveys today to discuss underground utility mapping in Cornwall, or speak to one of our experts on 0333 920 942.