Roanoke County, VA zoning map, flood zone and property lines by address
Free, no account. Or open the Virginia map and tap a lot.
Towns in Roanoke County: Cave Spring, Hollins, Vinton.
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 Roanoke County has 87 FIRM panels, the newest effective September 2007; 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 Roanoke 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 Virginia statewide parcel layer (Virginia Geographic Information Network, from each locality), so a Roanoke lot shows the same lines the real estate assessor draws. Roanoke County covers about 160,352 acres of land and 433 acres of water.
Mapped lines are approximate. The Roanoke County real estate assessor keeps the parcel record (Roanoke County website); a licensed surveyor sets the true corners.
Zoning
Roanoke County zones its unincorporated land, and Vinton zones the land inside its limits. ParcelSheet shows the use the real estate assessor lists for the lot and links the county planning office for the district, the uses it allows and the lot size it needs.
ADU and guest houses
Under Virginia's zoning law (Code of Virginia Title 15.2, Chapter 22), local governments can allow an accessory dwelling unit on a lot with a house. Whether a Roanoke lot can add one depends on its district; the county planning 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. Roanoke County is soil survey area VA161, Roanoke County and the Cities of Roanoke and Salem, Virginia, last updated August 2026, on Web Soil Survey.
A new or changed septic system in Roanoke County needs a permit from the Roanoke County local health department (Virginia Department of Health).
Setbacks
Setbacks in Roanoke 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 Vinton for land inside its limits.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Roanoke lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Roanoke 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 Roanoke County has 87 panels, the newest effective September 2007. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Roanoke County?
Open the Virginia map, type the address, and the parcel outline from the Roanoke County real estate 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 Roanoke County?
Zoning in Roanoke County is set by the county for unincorporated land and by each city (such as Vinton) inside its own limits. ParcelSheet shows the use code the real estate assessor lists and links the office that sets the zoning; the planning office has the final word.
Can I build an ADU in Roanoke County?
Under Virginia's zoning law (Code of Virginia Title 15.2, Chapter 22), counties and cities can allow an accessory dwelling unit, and each sets its own rules. In Roanoke 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 Roanoke County?
Yes. A new or changed septic system in Roanoke County needs a permit from the Roanoke County local health department (Virginia Department of Health). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area VA161 (Roanoke County and the Cities of Roanoke and Salem, Virginia).
What can I build on 5 acres in Roanoke County?
Zoning in Roanoke County is set by the county for unincorporated land and each city inside its own limits (such as Vinton). 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 Roanoke County website.
What are the residential setbacks in Roanoke County (2026)?
Setbacks in Roanoke 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 Roanoke County website.
Next to Roanoke County: Bedford County, Botetourt County, Craig County, Floyd County, Franklin County, Montgomery County, Roanoke city, Salem city.
The Virginia map · All Virginia counties · Flood zones explained · FIRM panels and LOMAs · All 50 states