Ashtabula County, OH zoning map, flood zone and property lines by address

Towns in Ashtabula County: Ashtabula, Conneaut, Geneva.

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 Ashtabula County has 94 FIRM panels, the newest effective August 2019; coastal V zones, where waves add to the flood, are mapped along its shore.

The official panel and any Letter of Map Amendment are at FEMA's Map Service Center. An elevation certificate for an Ashtabula 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 Ohio statewide parcel layer (OGRIP, Ohio Department of Natural Resources, from each county auditor), so an Ashtabula lot shows the same lines the county auditor draws. Ashtabula County covers about 449,547 acres of land and 426,091 acres of water.

Mapped lines are approximate. The Ashtabula County auditor keeps the parcel record (Ashtabula County website); a licensed surveyor sets the true corners.

Zoning

In Ohio zoning is set by the county, the township or the city or village, depending on where the lot is: in Ashtabula County, Ashtabula, Conneaut, Geneva each zone the land inside their limits. ParcelSheet shows the use code on the lot's parcel record and the municipality it sits in; the county, township or city zoning office has the district, the uses it allows and the lot size it needs. The Ashtabula County website lists the county's municipalities.

ADU and guest houses

Under Ohio's zoning laws (Ohio Revised Code chapters 303, 519 and 713), the county, the township or the city or village, depending on where the lot is can allow an accessory dwelling unit on a lot with a house. Whether an Ashtabula lot can add one depends on its district; the county, township or city zoning office 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. Ashtabula County is soil survey area OH007, Ashtabula County, Ohio, last updated August 2026, on Web Soil Survey.

A new or changed septic system in Ashtabula County needs a permit from the Ashtabula County local health district under the Ohio sewage treatment system rules (Ohio Administrative Code 3701-29).

Setbacks

Setbacks in Ashtabula County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the county, township or city zoning office gives them for the lot's district, and Ashtabula, Conneaut, Geneva for land inside their limits.

Hazards that apply

• Storm surge. Ashtabula County has coastal V zones on its FEMA map, so storm surge reaches its shore. The county's evacuation zones are on its emergency management site; ParcelSheet shows the FEMA zone and the 3 ft sea level rise map at the lot.
• Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near an Ashtabula lot and the Forest Service wildfire hazard rating at it.

Questions

Is my house in a flood zone in Ashtabula 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 Ashtabula County has 94 panels, the newest effective August 2019. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.

How do I find property lines in Ashtabula County?

Open the Ohio map, type the address, and the parcel outline from the Ashtabula County auditor 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 Ashtabula County?

Zoning in Ashtabula County is set by the county, the township or the city or village, depending on where the lot is (such as Ashtabula, Conneaut). ParcelSheet shows the use code on the parcel record and names the municipality; the county, township or city zoning office has the final word.

Can I build an ADU in Ashtabula County?

Under Ohio's zoning laws (Ohio Revised Code chapters 303, 519 and 713), the county, the township or the city or village, depending on where the lot is can allow an accessory dwelling unit, and each sets its own rules. In Ashtabula County ask the county, township or city 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 Ashtabula County?

Yes. A new or changed septic system in Ashtabula County needs a permit from the Ashtabula County local health district under the Ohio sewage treatment system rules (Ohio Administrative Code 3701-29). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area OH007 (Ashtabula County, Ohio).

What can I build on 5 acres in Ashtabula County?

Zoning in Ashtabula County is set by the county, the township or the city or village, depending on where the lot is (such as Ashtabula, Conneaut). 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 county, township or city zoning office has the district and its rules. See the Ashtabula County website.

What are the residential setbacks in Ashtabula County (2026)?

Setbacks in Ashtabula County come from the zoning code of the municipality the lot sits in: 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 county, township or city zoning office gives them for the district. See the Ashtabula County website.

Next to Ashtabula County: Geauga County, Lake County, Trumbull County.

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