Fresno County, CA zoning map, flood zone and property lines by address
Free, no account. Or open the California map and tap a lot.
Towns in Fresno County: Fresno, Clovis, Reedley.
Flood zone by address
ParcelSheet reads FEMA's National Flood Hazard Layer at the lot: the zone, whether it is a high risk area where lenders ask for flood insurance, and the base flood elevation where FEMA lists one. FEMA's countywide study for Fresno County has 216 FIRM panels, the newest effective January 2016; no coastal V zones are mapped in it.
The official panel and any Letter of Map Amendment are at FEMA's Map Service Center. An elevation certificate for a Fresno house comes from a licensed surveyor and is often on file with the county or city building office.
Property lines
The parcel outline, parcel number and mapped size come from the California county parcel layers (each county publishes its own), so a Fresno lot shows the same lines the county assessor draws. Fresno County covers about 3,813,492 acres of land and 33,768 acres of water.
Mapped lines are approximate. The Fresno County assessor keeps the parcel record (Fresno County website); a licensed surveyor sets the true corners.
Zoning
Fresno County zones its unincorporated land, and Fresno, Clovis, Reedley each zone the land inside their limits. ParcelSheet shows the use the county assessor lists for the lot and links the county planning department for the district, the uses it allows and the lot size it needs.
ADU and guest houses
Under California's Planning and Zoning Law (Government Code Title 7, Division 1, starting at section 65000), local governments can allow an accessory dwelling unit on a lot with a house. Whether a Fresno lot can add one depends on its district; the county planning department has the rule. ParcelSheet shows the mapped lot size and the ground's slope, the first two things the question turns on.
Septic and soil
ParcelSheet reads the USDA soil survey at the lot: the soil's name, its septic absorption rating and whether it is prime farmland. Fresno County is soil survey area CA653, Fresno County, California, Western Part, last updated September 2026, on Web Soil Survey.
A new or changed septic system in Fresno County needs a permit from the Fresno County environmental health department (under the State Water Resources Control Board OWTS Policy).
Setbacks
Setbacks in Fresno County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the county zoning office gives them for the lot's district, and Fresno, Clovis, Reedley for land inside their limits.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Fresno lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Fresno County?
Type the address in the box above and ParcelSheet reads FEMA's flood zone at the lot's center. FEMA's countywide flood map for Fresno County has 216 panels, the newest effective January 2016. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Fresno County?
Open the California map, type the address, and the parcel outline from the Fresno County assessor shows on the map with its parcel number and mapped size. Mapped lines are approximate; only a licensed surveyor sets the true corners.
What is my property zoned in Fresno County?
Zoning in Fresno County is set by the county for unincorporated land and by each city (such as Fresno, Clovis) inside its own limits. ParcelSheet shows the use code the county assessor lists and links the office that sets the zoning; the planning office has the final word.
Can I build an ADU in Fresno County?
Under California's Planning and Zoning Law (Government Code Title 7, Division 1, starting at section 65000), counties and cities can allow an accessory dwelling unit, and each sets its own rules. In Fresno County ask the zoning office for the lot's district first; ParcelSheet shows the lot size as mapped so you can see the room you have.
Do I need a septic permit in Fresno County?
Yes. A new or changed septic system in Fresno County needs a permit from the Fresno County environmental health department (under the State Water Resources Control Board OWTS Policy). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area CA653 (Fresno County, California, Western Part).
What can I build on 5 acres in Fresno County?
Zoning in Fresno County is set by the county for unincorporated land and each city inside its own limits (such as Fresno, Clovis). The zoning district decides the uses, how many homes and the smallest lot it allows on 5 acres. ParcelSheet shows the lot size as mapped and the use code on the parcel record; the planning office has the district and its rules. See the Fresno County website.
What are the residential setbacks in Fresno County (2026)?
Setbacks in Fresno County come from the zoning code of the county, or of the city when the lot is inside city limits: the front, side and rear distances depend on the lot's district. ParcelSheet does not draw setback lines or give a number it did not read; the zoning office gives them for the district. See the Fresno County website.
Next to Fresno County: Inyo County, Kings County, Madera County, Merced County, Mono County, Monterey County, San Benito County, Tulare County.
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