Jurisdiction
Determine which city or county agency controls planning and building review for the parcel.
Sonoma County · Property research
Sonoma County property research.
First identify the governing jurisdiction: one of Sonoma County’s cities or unincorporated Permit Sonoma territory. Then check zoning, General Plan designation, permit history, hazards, utilities and any agricultural, historic or coastal constraints.
Due diligence
What to check, and in what order.
Zoning + use
Confirm zoning, density, setbacks, overlays and whether the current and intended uses are documented.
Systems + hazards
Review water, wastewater, fire, flood, slope, soils, access, utilities and insurance context.
Local confirmation
Use online maps for orientation, then verify material conclusions with the responsible agency and qualified professionals.
Official tools
Where the records live.
Permit Sonoma parcel and permit search
Use this source for current parcel, planning or hazard context, then confirm material conclusions with the responsible agency.
Open source (opens in a new tab)City of Sonoma planning and zoning
Use this source for current parcel, planning or hazard context, then confirm material conclusions with the responsible agency.
Open source (opens in a new tab)Sonoma County 2025 fire-hazard layer
Use this source for current parcel, planning or hazard context, then confirm material conclusions with the responsible agency.
Open source (opens in a new tab)Owning here
Budget for the systems, not just the house.
Insurance, utilities, drainage, vegetation, access, maintenance and taxes all change what a property costs to own. Worth identifying early rather than after closing.
Online maps are screening tools. They are not surveys, title reports, permit approvals, engineering opinions or insurance commitments.
Keep reading
The rest of the guide.
5 more sections on Sonoma County.
01Overview
Market position, population context and the fastest route into the rest of the guide.
Open 02MarketDated housing indicators, definitions and balanced seller and buyer implications.
Open 03NeighborhoodsSubmarkets, housing forms, architecture and an inclusive history of place.
Open 04School finderAddress-first district tools, state measures and verification steps without rankings.
Open 06Living hereShopping, dining, entertainment, outdoors and the realities of daily ownership.
OpenRelated library
Continue with the property questions.
Get in touch
Own property in Sonoma County?
Area context only goes so far. The particulars of one property are a conversation, and a free custom valuation is a practical place to start it.