Here’s a concise, county-applicable checklist you can use before buying undeveloped land in Napa, Solano, or Yolo County — and the pragmatic next steps.
Key things to verify (do these before you remove contingencies):
Zoning & buildability: confirm parcel zoning, general-plan designation, minimum parcel size, and permitted uses (e.g., residential vs. agricultural). County zoning is the starting point for whether you can build at all. (buildbuyorrenovate.com)
Water & sewage: check well logs/water availability, groundwater reports, and whether an engineered septic or sewer connection is required. In Napa County a hydrologic assessment is commonly needed for unserved parcels. (buildbuyorrenovate.com)
Legal access, easements & title: verify legal access (recorded easements or public road access), obtain a current title report, and order a boundary survey — these determine whether the lot is actually usable. Also review recorded easements (utility, pipeline, conservation). (landgauge.com)
Hazards & constraints: check wildfire severity (CAL FIRE/local FHSZ viewers), FEMA flood maps, wetlands, soils (septic suitability) and any environmental encumbrances — these affect insurance, defensible-space requirements, and permitting. (vertexlegal.org)
County-specific rules & contacts: contact county planning/building, environmental health (septic/well permitting), and the assessor’s office for parcel history and tax status. Napa, Solano and Yolo each have specific forms, disclosures and local restrictions you must confirm. (napacounty.gov)
Quick practical checks and costs to estimate:
Utilities & serviceability: confirm telecom, power, and gas availability and realistic costs to extend them to a building site. (parcelpeak.co)
Development costs: road upgrades, driveway/bridge work, grading, retaining walls, mitigation (habitat, wetlands), and required off-site improvements can substantially exceed the land price. (landgauge.com)
Financing & insurance: lenders may require larger down payments for raw land; wildfire exposure can limit insurance options or increase premiums. (agwestfc.com)
Recommended next steps (in order):
Pull GIS parcel data and zoning from the county site and call planning/building to ask whether your intended use is allowed. (napacounty.gov)
Get a preliminary title report and current property deed; order a boundary survey if title or access looks unclear. (landgauge.com)
Commission a site-specific hydrologic or well feasibility study (if no well), a soils/percolation test for septic (if needed), and a site visit with a civil engineer or land consultant. (buildbuyorrenovate.com)
Review hazard maps (CAL FIRE, FEMA) and check with the local fire district about required water/fire protection standards. (vertexlegal.org)
Build contract contingencies protecting you for title, survey, utility feasibility, septic/well, and permit approvals. Obtain cost estimates for off-site and on-site improvements before waiving contingencies. (landgauge.com)