Monument Preservation in Pittsburg, CA

Pittsburg's old downtown grid was laid out near the water in the city's riverfront industrial era, when steel and chemical plants defined its economy. Today that same grid is the focus of streetscape and revitalization work, while paving and utility programs run through the postwar neighborhoods and new subdivisions climb the southeast hills. Each kind of project threatens a different generation of monuments: original grid monuments downtown, tract monuments in the flats, and modern subdivision monuments in the hills. The industrial parcels in transition along the shoreline add a fourth category — large metes-and-bounds parcels whose corners were monumented for plant boundaries decades ago, and which become critical the moment redevelopment, subdivision, or sale puts those lines back in play. Demolition and remediation work on these sites can destroy corner evidence before anyone realizes it mattered.

Business and Professions Code §8771 is the governing statute: monuments disturbed by construction must be referenced beforehand by a licensed land surveyor and reset afterward, with Corner Records filed with the Contra Costa County Surveyor in Martinez before and after. We perform this work for paving contractors, utility crews, and the demolition and grading contractors clearing industrial ground. On a downtown streetscape block, our Trimble terrestrial laser scanner captures the entire corridor — monuments, curbs, storefront lines — at survey grade in one visit, so referencing happens without holding up the contractor. On shoreline industrial sites, where filled ground can fall within state Seismic Hazards Mapping Act liquefaction zones, the same scan data doubles as pre-demolition documentation of site conditions.

The cost logic holds everywhere in Pittsburg: referencing and resetting a monument is a small, predictable expense. Re-establishing a destroyed corner on a century-old industrial metes-and-bounds parcel — or an original downtown block corner — means record research, retracement, and new filings that can run many times the preservation cost, with the schedule risk landing on whoever destroyed the evidence.