Topographic Surveys in Alameda, CA

Alameda is nearly flat, and that is exactly why topographic accuracy matters here. On a lot with only a foot or two of total relief, the direction water drains is decided by inches, and a sparse conventional topo can miss the subtle crown, swale, or back-pitched driveway that controls the whole grading design. Additions and ADUs behind the island's large Victorian housing stock, lagoon-area lots where finished-floor and yard grades sit close to water level, and any project involving new impervious area all lean on dense, reliable spot elevations. Along the city's bay-fill margins and in mapped liquefaction zones, geotechnical engineers also want existing-grade documentation as part of their analysis, and redevelopment work around the former Naval Air Station at Alameda Point sits almost entirely on filled ground where surface documentation is baseline due diligence.

Our Trimble terrestrial laser scanner is particularly well suited to flat-lot work. Where a total-station topo yields a few hundred shots and interpolates everything between them, the scanner captures millions of points across the lot in one visit — every subtle grade break, curb, gutter flow line, and patio slope measured rather than assumed. On Alameda's older narrow lots the scanner also records the house itself: wall faces, eave lines, porch steps, and adjacent structures, which keeps setback and second-story design questions answerable from the same dataset. Deliverables include spot elevations on a tight grid, 1-foot (or half-foot) contours, a DTM, a layered DWG/DXF base map, and the point cloud for your design team. Nothing gets re-shot, because nothing gets missed.

Our boundary research and any survey filings run through the Alameda County Recorder and the Alameda County Surveyor's office. If your project also involves documenting an existing Victorian for renovation drawings, our as-built surveys extend the same scan data into floor plans and elevations.