Guerneville is a census-designated place in unincorporated Sonoma County, California.
Sonoma County · census-designated place
Guerneville
Guerneville is a census-designated place in unincorporated Sonoma County, in the North Bay. 9.71 sq mi of land. Zoning is set by the county, not a city government. Screen any APN in or near Guerneville for zoning, FEMA flood, CAL FIRE / WUI wildfire hazard, soils, geology, and planning — every finding linked to the official source — then verify with Sonoma County planning before you buy or entitle.
Updated 2026-08-29
Useful sources for searching Guerneville: Official sources to verify buildability in Guerneville ↓
About Guerneville land diligence
Guerneville is a census-designated place in unincorporated Sonoma County, in the North Bay. 9.71 sq mi of land. Zoning is set by the county, not a city government.
Guerneville is a census-designated place in unincorporated Sonoma County—confirm zoning with the county. Most deals need both a fast multi-layer screen and a follow-up with local planners—especially where city limits, specific plans, hillside fire standards, or floodplain rules apply.
Search intents this page answers: zoning in Guerneville, FEMA flood near Guerneville, CAL FIRE hazard severity, APN lookup, and whether a vacant lot is buildable before you spend on surveys or design.
Community snapshot
Character: River resort / redwood community.
Climate: Mediterranean — mild wet winters, warm dry summers (North Bay).
Regional context: wine-country influence can shape land use, tourism, and edge-lot values.
Jurisdiction check: confirm whether the APN is inside Guerneville limits or unincorporated Sonoma County before relying on city zoning maps alone.
Parcel View’s Guerneville guide is a first-pass screen for zoning, FEMA flood, CAL FIRE / WUI, soils, and geology — with source links — then verify with Sonoma County planning (unincorporated) and the county assessor.
Housing & land patterns
Median home
$601k
Median income
$81k
Ownership
67%
Median year built
1955
vs California
-21%
Terrain
Coastal bluffs · Russian River · Santa Rosa Plain
Guerneville — River resort / redwood community with housing prices below the California ACS median, household incomes below the state average, a owner-heavy housing mix, and housing stock primarily built during the mid-20th century.
Housing market
Median home value
$601k
$600,600
Lower than CA
Median rent
$1,579/mo
Median household income
$81k
$81,281
Lower than CA
Vacancy rate
29.8%
-21% vs California ACS median
Housing characteristics
1955
19202025
Typical home age signal — not a forecast of new construction.
Affordability & housing mix
Home value ÷ income
7.4×
ACS proxy — median home value divided by median household income
Rent ÷ income
23%
Annual median gross rent as share of median household income
Rent burden 30%+
49%
Share of renter households paying 30% or more of income on gross rent
Derived ACS ratios for market context — not a proprietary cost-of-living index or lender qualification standard.
Units-in-structure mix from ACS — shares of total housing units, not new construction pipeline.
Lifestyle & investment
Families
- Income levels vary — confirm school and commute fit locally
- Neighborhood amenities and lot hazards still decide fit
- Confirm attendance boundaries on the specific APN
Retirees
- Housing stock centered around 1955 — maintenance needs vary
- Walkability and healthcare access differ street to street
- Review HOA rules, insurance, and parcel hazards before buying
Investors
- Owner-heavy markets still need local rental comps
- ACS median gross rent about $1,579/mo
- Zoning, ADU rules, and insurance drive outcomes more than ACS averages
Builders
- Valley lots can be gentle yet flood-exposed—pair topography with FEMA
- Verify zoning, setbacks, and utility access early
- Geotechnical and grading reviews are common on hillside lots
Terrain & geography
Sonoma County spans Pacific coast, foggy river valleys, volcanic highlands, and Mayacamas ridges. Petaluma and Santa Rosa flats sit near steep coastal and mountain terrain within the same county.
Elevation Sea level along the coast to roughly 4,000+ ft in the Mayacamas and Geysers area
01Coastal bluffsCoastal bluffs, terraces, and Sonoma Coast headlands
02Russian RiverRussian River and Petaluma River valleys and floodplains
03Santa Rosa PlainSanta Rosa Plain and other inland valley floors
04Mayacamas MountainsMayacamas Mountains, Sonoma Mountain, and volcanic highlands
Development checklist
- Slope and grading feasibility
- Flood exposure and drainage
- Wildfire / WUI hazard
- Liquefaction and geology where mapped
- Zoning, setbacks, and overlays
- Utility access (water, sewer/septic, power)
- Geotechnical conditions on hillside or fill lots
Screen slope and elevation on the APN in Parcel View, then confirm grading, driveway grades, and pad feasibility with Sonoma County planning and a licensed surveyor/engineer.
Key takeaways
- Housing prices in Guerneville run below the California ACS median.
- Terrain shifts across several landscapes — from coastal bluffs to mayacamas mountains.
- Parcel-specific screening for zoning, flood, wildfire, soils, and slope matters more than any countywide average.
What Parcel View checks in Guerneville
Parcel & APN
Boundary and assessor parcel number context so you can confirm you are looking at the right lot inside or near Guerneville.
Zoning & land use
Reference zoning and general plan overlays from public GIS—verify final district with Sonoma County planning.
FEMA flood
National Flood Hazard Layer zones across the parcel, including Special Flood Hazard Areas that affect insurance and building rules around Guerneville.
Wildfire hazard
CAL FIRE Fire Hazard Severity Zones and WUI context for insurance and defensible-space diligence around Guerneville.
Soils
USDA SSURGO map units for a first look at septic suitability, drainage, and grading constraints where mapped near Guerneville.
Geology & slope
Mapped liquefaction, fault, landslide, and terrain screens where the state publishes them for Sonoma County.
Verify locally
Parcel View is a first-pass public GIS screen. City or county planning makes official determinations for Guerneville.
- Sonoma County planning ↗ — zoning, general plan, and permit rules.
- Sonoma County Assessor ↗ — parcel numbers and lot records.
- Sonoma County Parcel View page — county-wide layers and nearby context.
- Sonoma FEMA flood screen
- Sonoma wildfire hazard screen
- Sonoma zoning screen
- FEMA Map Service Center ↗ — flood zones and base flood elevations.
- CAL FIRE Fire Hazard Severity Zones ↗ — state wildfire hazard mapping.
Living and buying land in Guerneville
Guerneville is a census-designated place in unincorporated Sonoma County, California.
Character: River resort / redwood community.
Climate: Mediterranean — mild wet winters, warm dry summers (North Bay).
Regional context: wine-country influence can shape land use, tourism, and edge-lot values.
Jurisdiction check: confirm whether the APN is inside Guerneville limits or unincorporated Sonoma County before relying on city zoning maps alone.
Parcel View’s Guerneville guide is a first-pass screen for zoning, FEMA flood, CAL FIRE / WUI, soils, and geology — with source links — then verify with Sonoma County planning (unincorporated) and the county assessor.
Wildfire, flood, and insurance diligence in Guerneville
Hazard diligence is parcel-specific in Guerneville, but community patterns matter for underwriting and timeline.
Wildfire: community screening level is elevated — Sonoma County has extensive WUI history — screen CAL FIRE on every APN.
Elevated.
Flood: community screening level is high — Historic Russian River flooding — FEMA + elevation diligence critical.
Yes — among the highest flood diligence priorities in the county.
Seismic: California is seismically active. Review Alquist-Priolo / fault maps and local geologic hazards for the APN..
Coastal influence may add Local Coastal Program, tsunami, or coastal setback questions on some lots.
Insurance diligence often focuses on wildfire underwriting, defensible space, and flood determination where mapped.
FAIR Plan / insurance context: Homeowners insurance can be constrained by wildfire, brush, and sometimes flood. FAIR Plan appears more often in higher wildfire zones — verify early in diligence.
Commute, transit, and utilities in Guerneville
Commute times depend on destination and time of day — map drive times rather than a single citywide average.
Downtown / village center: Yes — Guerneville has a recognizable downtown or plaza area.
Visit the parcel at the hours you would actually commute — last-mile access varies street-by-street.
Sewer vs septic: Verify parcel-by-parcel..
Wells: Common.
Electric/gas utility context is typically PG&E territory in this part of Sonoma County — confirm the serving utility on the meter.
Guerneville subareas and lot patterns
Guerneville is often searched as a single community name on listings and county maps.
Even without a long published neighborhood list, lot-level zoning, hazards, utilities, and school boundaries still vary.
When comparing two lots in Guerneville, weight WUI/fire, FEMA flood, septic vs sewer, slope/access, and easements carefully.
Lifestyle context for Guerneville
Rivers: Russian River.
Lifestyle in Guerneville is shaped by Sonoma County’s mix of neighborhoods, commercial corridors, and nearby open space.
Separate lifestyle preferences from lot-level buildability — a great street can still fail on fire insurance, flood zone, slope, or septic capacity.
How to screen a parcel in Guerneville
Enter the address or APN on Screen and confirm jurisdiction (Sonoma County planning (unincorporated) vs Sonoma County).
Review zoning, FEMA flood, CAL FIRE / WUI, soils, geology, and slope/elevation overlays.
Short-term rentals: Tourism community — STR rules are actively regulated; verify county rules.
- Character
- River resort / redwood community
- Median home value (ACS)
- $600,600 (about 21% below the California statewide ACS median) · ACS 2020-2024
- Median gross rent (ACS)
- $1,579/mo · ACS 2020-2024
- Median household income (ACS)
- $81,281 · ACS 2020-2024
- Homeownership (ACS)
- 67% owner-occupied
- Housing stock age
- About 1955
- Market context
- Median home $600,600 (about 21% below the California statewide ACS median); vacancy about 29.8% · ACS 2020-2024 context
- County elevation range
- Sea level along the coast to roughly 4,000+ ft in the Mayacamas and Geysers area
- Fire risk (community)
- elevated
- Flood risk (community)
- high — Historic Russian River flooding — FEMA + elevation diligence critical
- Sewer / septic
- Mixed; many older systems — verify
- Downtown
- Yes
Common Guerneville buyer questions
Short screening answers for searches buyers actually type. These are community-level notes — confirm on the parcel and with Sonoma County planning.
Is this area expensive?
Median owner-occupied home value is about $600,600 (about 21% below the California statewide ACS median); median gross rent about $1,579/mo. Neighborhoods vary — confirm current listings with a local agent.
Is it a buyer's market?
Median home $600,600 (about 21% below the California statewide ACS median); vacancy about 29.8% · ACS 2020-2024 context
Is it family friendly?
High household incomes (about $81,281) suggest a relatively affluent community, but school quality, commute, parks, and parcel hazards still decide family fit. Confirm attendance boundaries and screen fire/flood on the APN.
Is it good for retirees?
Housing built around 1955 means maintenance needs vary. Walkability, healthcare access, HOA rules, and insurance costs should be reviewed before purchasing.
Is it good for investors?
Tenure mix is about 67% owner-occupied. Median gross rent about $1,579/mo. Rental demand may help, but zoning, ADU rules, STR ordinances, and insurance ultimately determine investment potential.
Are rentals in demand?
Median gross rent is about $1,579/mo. Confirm vacancy, comps, and any rent-stabilization or STR rules before underwriting.
Is there new construction?
Typical stock ages to around 1955; newer tracts and Housing Element sites still need local planning maps. Check current applications with Sonoma County planning for unincorporated land.
Can I build an ADU?
California ADU law is strong; confirm city ordinance standards and parcel hazards with planning.
Is it wildfire prone?
Elevated.
Is flooding common?
Yes — among the highest flood diligence priorities in the county.
Is there public sewer?
Verify parcel-by-parcel.
Are wells common?
Common.
Are short-term rentals allowed?
Tourism community — STR rules are actively regulated; verify county rules.
Is it pet friendly?
Generally pet-friendly communities; confirm HOA/rental rules per property.
Screen a parcel in Guerneville Local planning ↗ Sonoma County guide
Profile confidence: medium · Updated 2026-08-05. Informational screening only.
Frequently asked questions about Guerneville parcels
Is land in Guerneville buildable?
Buildability is not a single map label. Screen zoning, flood, wildfire hazard, access, and soils for the specific APN near Guerneville, then ask Sonoma County planning whether your proposed use can be entitled and permitted.
How do I check zoning in Guerneville?
Run a Parcel View screen for a first-pass zoning/general-plan reference, then confirm the controlling district with Sonoma County planning. Overlays and specific plans can change what is allowed.
Does Guerneville have FEMA flood risk?
Flood risk is parcel-specific. Parcel View intersects the FEMA National Flood Hazard Layer with the lot polygon. Always verify Special Flood Hazard Areas and base flood elevations on the FEMA Map Service Center before financing or building.
How do I screen a parcel in Guerneville?
Enter the address or APN in Parcel View. Guerneville is a census-designated place in unincorporated Sonoma County—confirm zoning with the county.
Is Parcel View a substitute for Sonoma County planning?
No. It is a first-pass public GIS screen with source links. City or county planning makes official determinations.