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Frederick County, VA Environmental Rules: Flood Zones (2026)

Significant Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

FEMA flood zone rules in Frederick County, VA, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.

Key Facts

Permit required: Yes, for all floodplain development
Residential elevation: 1 foot above base flood elevation
Accessory structure cap: 600 square feet in SFHA
Enforcing office: Floodplain Administrator / Zoning Administrator
Violation class: Misdemeanor
Governing part: Chapter 165, Part 503

FEMA Flood Zone Lookup

FEMA assigns every parcel in the U.S. a flood-hazard designation on its Flood Insurance Rate Maps (FIRMs). Zones starting with A or V are high-risk Special Flood Hazard Areas where federally backed mortgages require NFIP flood insurance. Zone X indicates moderate-to-minimal risk, where insurance is optional but often recommended. Your specific zone determines insurance cost, build elevation, and permit requirements in Frederick County, VA.

Zone	What it means	NFIP required?
A	High-risk flood area; 1% annual chance flood, no detailed analysis.	Yes
AE	High-risk; same as A but with established Base Flood Elevations.	Yes
AH	High-risk shallow flooding (1-3 ft), usually ponding.	Yes
AO	High-risk shallow flooding (1-3 ft) with sheet flow on sloping terrain.	Yes
V	High-risk coastal zone subject to wave action (no BFE).	Yes
VE	High-risk coastal zone with wave action and established BFEs.	Yes
X (shaded)	Moderate risk; between the 1% and 0.2% annual chance flood.	Recommended
X	Minimal risk; outside the 0.2% annual chance floodplain.	No

Look up Frederick County, VA on the FEMA flood map

FEMA maps update periodically; verify zone before buying flood insurance or building.

Summary

In Frederick County outside Winchester, Stephens City and Middletown, any use, activity or development inside the Floodplain Overlay District needs a permit before work starts. New and substantially improved residential structures in mapped A, A1-30, AE and AH zones must have the lowest floor elevated at least one foot above the base flood elevation.

These county ordinances apply to unincorporated areas of Frederick County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Permit requirement. ... All uses, activities, and development occurring within any floodplain district, including placement of manufactured homes, shall be undertaken only upon the issuance of a permit. ... Residential construction. New construction or substantial improvement of any residential structure (including manufactured homes) in Zones A1-30, AE, AH, and A with detailed BFEs shall have the lowest floor, including basement, elevated no lower than one foot above the BFE. ... Any person who fails to comply with any of the requirements or provisions of this article or directions of the Zoning Administrator or any authorized employee of Frederick County shall be guilty of a misdemeanor and subject to the penalties outlined in Article II, Administration, of this chapter.

View official code

Full Breakdown

2-2283. A, every use, activity and development in any floodplain district, including placement of manufactured homes, needs a permit, and even where a permit is not required the Zoning Administrator must approve the activity first. No development may adversely affect the flood-carrying capacity of any channel, watercourse, drainage ditch or drainage facility. B. A(2), certified by a registered professional engineer or architect. Accessory structures in the special flood hazard area are capped at 600 square feet, must use flood-resistant materials below the base flood elevation, and need flood openings sized at one square inch per square foot of enclosed area. A, unless the Floodplain Administrator finds the work is not a substantial improvement and adds no noncompliant square footage.

Violations & Fines

The Floodplain Administrator (within the Zoning Administrator's office) enforces Part 503. Under § 165-503.17.A, anyone who fails to comply with the article's requirements or the Floodplain Administrator's directions is guilty of a misdemeanor and subject to the penalties in Article II, Administration, of Chapter 165; the Virginia Uniform Statewide Building Code separately addresses building-code violations and penalties in its Sections 104 and 115. The county may also pursue an action in equity, require correction within a reasonable time, and declare a noncompliant structure a public nuisance subject to abatement under § 165-503.17.B.

Frequently Asked Questions

Do I need a permit to build in the Frederick County floodplain?

Yes. Section 165-503.13.A requires a permit for all uses, activities and development within any floodplain district, including placing a manufactured home, and even permit-exempt activity still needs Zoning Administrator approval first.

How high must a new house be built in a Frederick County flood zone?

In Zones A1-30, AE, AH and A with detailed base flood elevations, § 165-503.15.A(1) requires the lowest floor, including any basement, to sit at least one foot above the base flood elevation.

What happens if I build in the floodplain without complying?

Section 165-503.17.A makes noncompliance a misdemeanor subject to Chapter 165's general penalties, and the county can also require correction, pursue an equity action, or declare the structure a public nuisance for abatement.

Sources & Official References

[1]Code of Frederick County, VA § 165-503.13 to .17 (eCode360)

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All Frederick County rules

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