Parcel Maps in Antioch, CA

Antioch offers two very different kinds of minor-subdivision work, and we do both. In the broad postwar tracts, homeowners increasingly ask about splitting a single-family lot — sometimes under the conventional Subdivision Map Act parcel map process, sometimes under SB 9's urban lot split provisions. SB 9 eligibility is genuinely parcel-specific: it depends on zoning, prior use of the statute, tenancy history, and site constraints, and the City of Antioch applies its own objective standards. We do not promise outcomes — we survey the parcel, check the recorded restrictions and easements, and give you an honest feasibility read before you spend on applications. Even where SB 9 applies, a parcel map is still the recording instrument, and the survey work is the same disciplined boundary retracement either way.

On Antioch's southern rural edges, the work looks more traditional: dividing large lots into two to four parcels with a tentative and final parcel map through city planning, resolving access and utility easements, and setting monuments per Business and Professions Code §8771. Near the Delta shoreline and marina, low-lying ground can fall within state Seismic Hazards Mapping Act liquefaction zones — a feasibility item we flag early for waterfront-margin parcels. All maps, wherever they sit in the city, record with the Contra Costa County Recorder in Martinez after County Surveyor review.

Our Trimble terrestrial laser scanner lets one mobilization do double duty: we recover the boundary evidence and capture a survey-grade topographic base — structures, driveways, drainage, trees, grade — in the same visit. That combined dataset feeds the tentative map, the civil design, and any later building permits, which is why most Antioch splits start with our boundary and topographic survey package. With BART's Antioch station anchoring new interest in east county, getting the map right the first time matters more than ever.