Topographic Surveys in Vallejo, CA

Vallejo may be the most survey-hungry city we serve. Mare Island — the West Coast's first naval shipyard, now a major adaptive-reuse district — is full of dry docks, machine shops, and officers' quarters whose original drawings are lost or incomplete. Developers and engineers repositioning those properties often start from almost no reliable documentation, which is precisely the problem our Trimble terrestrial laser scanner solves: in one mobilization we capture the site and its structures as millions of survey-grade points, then deliver a digital terrain model, 1-foot contours, spot elevations, a DWG/DXF base map, and a point cloud the design team can measure anything from later. Where a project needs the buildings themselves documented, the same field data feeds a full as-built survey — no second site visit required.

Off the island, Vallejo's Victorian districts downtown and on St. Vincent's Hill bring a different profile: steep street grades, raised foundations, retaining walls, and close-set 19th-century houses on compact lots. Additions, foundation replacements, and hillside drainage fixes on these blocks depend on topographic mapping that captures both ground and structures precisely, and scanning collects all of it from a handful of setups without repeated access to narrow side yards. Along the waterfront, filled ground carries state-mapped liquefaction zones under the Seismic Hazards Mapping Act, so geotechnical and civil work on those parcels needs current, accurate surface elevations rather than legacy mapping — exactly what a scan-derived DTM provides.

Vallejo sits in Solano County, so our record research runs through the Solano County Recorder and County Surveyor in Fairfield. On every project we pull recorded maps, records of survey, and benchmark ties before mapping begins, so the finished topographic survey is anchored to a documented datum and consistent with the recorded parcel framework — a foundation that matters even more on Mare Island, where the paper trail is thin.