As-Built Surveys in Crockett, CA

Crockett grew as the company town of the C&H Sugar refinery, its early-1900s homes stacked up steep hillside streets above the Carquinez Strait. The lots are small, terraced, and irregular; houses step down slopes behind retaining walls, entries land at different levels than rear yards, and foundations follow grades that changed a century ago. This is some of the most geometrically complicated residential fabric in Contra Costa County, and it is exactly the environment where a Trimble terrestrial laser scanner earns its keep. In a single visit we capture the house, its retaining walls, stairs, and terraced yard surfaces as one registered point cloud — millions of survey-grade points — and deliver floor plans, sections, elevations, and site relationships in DWG, Revit models at LOD 200 or 300, and E57 or RCP point cloud files.

For remodel architects and retrofit engineers, the sections are often the most valuable sheet in the set. On a terraced Crockett lot, understanding how finished floors relate to grade on each side of the house — and how the retaining walls between terraces actually lean and step — drives foundation design, drainage, and structural scope. Scanning records those vertical relationships precisely, without anyone balancing a level rod on a forty-degree slope. Crockett is unincorporated, so permits run through Contra Costa County, and recorded maps for these compact townsite lots are held by the County Recorder and County Surveyor in Martinez. Along the waterfront margin, state Seismic Hazards Mapping Act zones can apply, adding another reason submittal drawings should reflect true existing conditions. When settlement or wall movement is the underlying concern, the same scan data supports our monitoring work, giving owners a measured baseline to compare against later.

Hillside access is a genuine challenge in Crockett — one we plan for. The scanner works from multiple compact setups, so tight side yards and stepped terraces do not compromise coverage.