Harford County, MD zoning map, flood zone and property lines by address
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Towns in Harford County: South Bel Air, Bel Air South, North Bel Air.
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 Harford County has 114 FIRM panels, the newest effective April 2016; 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 a Harford 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 Maryland Department of Planning, statewide parcel boundaries (MD iMAP), so a Harford lot shows the same lines the state Department of Assessments and Taxation draws. Harford County covers about 279,762 acres of land and 57,299 acres of water.
Mapped lines are approximate. The Maryland Department of Assessments and Taxation keeps the parcel record (Harford County website); a licensed surveyor sets the true corners.
Zoning
Harford County zones its unincorporated land. ParcelSheet shows the use the state Department of Assessments and Taxation lists for the lot and links the county planning and zoning office for the district, the uses it allows and the lot size it needs.
ADU and guest houses
Under Maryland's Land Use Article (Annotated Code of Maryland, Land Use Title 4, Zoning), local governments can allow an accessory dwelling unit on a lot with a house. Whether a Harford lot can add one depends on its district; the county planning and 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. Harford County is soil survey area MD600, Harford County Area, Maryland, last updated September 2026, on Web Soil Survey.
A new or changed septic system in Harford County needs a permit from the Harford County health department (under Maryland Department of the Environment onsite systems rules).
Setbacks
Setbacks in Harford 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.
Hazards that apply
- Storm surge. Harford 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 a Harford lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Harford 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 Harford County has 114 panels, the newest effective April 2016. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Harford County?
Open the Maryland map, type the address, and the parcel outline from the Maryland Department of Assessments and Taxation 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 Harford County?
Zoning in Harford County is set by the county for unincorporated land and by each city inside its own limits. ParcelSheet shows the use code the state Department of Assessments and Taxation lists and links the office that sets the zoning; the planning office has the final word.
Can I build an ADU in Harford County?
Under Maryland's Land Use Article (Annotated Code of Maryland, Land Use Title 4, Zoning), counties and cities can allow an accessory dwelling unit, and each sets its own rules. In Harford 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 Harford County?
Yes. A new or changed septic system in Harford County needs a permit from the Harford County health department (under Maryland Department of the Environment onsite systems rules). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area MD600 (Harford County Area, Maryland).
What can I build on 5 acres in Harford County?
Zoning in Harford County is set by the county for unincorporated land and each city inside its own limits. 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 Harford County website.
What are the residential setbacks in Harford County (2026)?
Setbacks in Harford 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 Harford County website.
Next to Harford County: Baltimore County, Cecil County, Kent County.
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