Manassas city, VA zoning map, flood zone and property lines by address
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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 has 11 FIRM panels covering Manassas city, the newest effective April 2024; 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 Manassas 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 Manassas lot shows the same lines the real estate assessor draws. Manassas city covers about 6,300 acres of land and 36 acres of water.
Mapped lines are approximate. The Manassas city real estate assessor keeps the parcel record (Manassas city website); a licensed surveyor sets the true corners.
Zoning
In Manassas city zoning is set by the city itself, an independent city outside any county. ParcelSheet shows the use code on the lot's parcel record and the municipality it sits in; the city planning office has 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), the city itself, an independent city outside any county can allow an accessory dwelling unit on a lot with a house. Whether a Manassas lot can add one depends on its district; the city planning office has the rule. ParcelSheet shows the mapped lot size and the ground's slope, the first two things the question turns on.
Setbacks
Setbacks in Manassas city come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the city planning office gives them for the lot's district.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Manassas lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Manassas city?
Type the address in the box above and ParcelSheet reads FEMA's flood zone at the lot's center. FEMA has 11 flood map panels covering Manassas city, the newest effective April 2024. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Manassas city?
Open the Virginia map, type the address, and the parcel outline from the Manassas city 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 Manassas city?
Zoning in Manassas city is set by the city itself, an independent city outside any county. ParcelSheet shows the use code on the parcel record and names the municipality; the city planning office has the final word.
Can I build an ADU in Manassas city?
Under Virginia's zoning law (Code of Virginia Title 15.2, Chapter 22), the city itself, an independent city outside any county can allow an accessory dwelling unit, and each sets its own rules. In Manassas city ask the city planning office for the lot's district first; ParcelSheet shows the lot size as mapped so you can see the room you have.
What can I build on 5 acres in Manassas city?
Zoning in Manassas city is set by the city itself, an independent city outside any county. 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 city planning office has the district and its rules. See the Manassas city website.
What are the residential setbacks in Manassas city (2026)?
Setbacks in Manassas city 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 city planning office gives them for the district. See the Manassas city website.
Next to Manassas city: Prince William County, Manassas Park city.
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