Arlington Floodplain Ordinance & Mitigation Guide

Land Use and Zoning Virginia 3 Minutes Read ยท published February 10, 2026 Flag of Virginia

Arlington, Virginia faces localized flood risk along streams and low-lying areas. This guide explains the county rules that govern development in FEMA-designated floodplains, practical mitigation steps, permitting paths, and how enforcement and appeals work in Arlington. It is written for property owners, contractors, and planners who need to comply with local floodplain standards, obtain required permits, and reduce exposure to flood damage.

Overview of Floodplain Rules

Arlington administers floodplain management consistent with the National Flood Insurance Program and its local ordinance. Property-level requirements typically include elevation, floodproofing, and limitations on certain types of development in mapped flood hazard areas. For county guidance and maps, consult the Arlington County floodplain program page[1].

Check the county floodplain map early in project planning.

Required Permits & Standards

Work in a regulated floodplain generally requires a building permit and may require a floodplain development approval or specific mitigation measures such as: elevation of lowest floor, anchoring, and using flood-resistant materials. Submit permit applications through Arlington County Permits and Inspections; exact permit names, fees, and filing instructions are on the county permit page[2].

  • Floodplain development approval or building permit where the project enters a mapped flood zone.
  • Elevation certificate or similar documentation to verify finished floor elevations where required.
  • Construction methods that meet flood-resistant standards (materials, utilities placement).

Applications & Forms

The county processes permits and related floodplain documentation through its permits center and online submission portal. Specific floodplain permit forms and fee schedules are not consolidated on a single page on the cited county permit site; applicants should consult the permit center for current submittal checklists and fee information[2].

Penalties & Enforcement

Enforcement of floodplain rules in Arlington is handled through the county permitting and code enforcement authorities. The municipal code and county program pages describe enforcement authority but do not list exact statutory fine amounts on the cited pages; therefore specific monetary penalties are not specified on the cited page[3]. If an unauthorized development, failure to obtain required permits, or violation of mitigation conditions is found, typical remedies include stop-work orders, orders to restore land to its prior condition, denial of certificates of occupancy, and referral to legal action.

  • Fines: not specified on the cited page; see county code for statutory penalty provisions[3].
  • Escalation: first and repeat violations and continuing offence treatment are not specified on the cited program page[3].
  • Non-monetary sanctions: stop-work orders, restoration orders, permit denial, and court enforcement are used by county authorities.
  • Enforcer and complaints: contact Arlington County Permits and Inspections or the department listed on the floodplain program page to report violations and request inspections[1].
  • Appeals/review: appeal routes (for variances or permit denials) depend on the specific permit and may involve the County Board or established appeal bodies; time limits for appeals are not specified on the cited page[3].
If you receive a stop-work order, contact the permits office immediately to learn appeal and compliance steps.

Common Violations

  • Building without a required floodplain permit.
  • Failure to elevate or floodproof a structure as required by permit conditions.
  • Not providing or falsifying elevation certificates or required documentation.

How-To

  1. Confirm whether your property is in a mapped floodplain using the county floodplain maps and FEMA flood maps[1].
  2. Contact Arlington Permits and Inspections to determine required permits and application materials[2].
  3. Prepare required documentation (plans, elevation certificates, mitigation measures) and submit through the county permit portal[2].
  4. Address inspections and comply with permit conditions; obtain certificate of occupancy or final approval before occupying altered structures.

FAQ

Do I need a permit for work in a floodplain?
Yes. Most structural work in a mapped floodplain requires a building permit and may require additional floodplain development approvals; consult the county permit center for specifics[2].
How do I find out if my property is in a floodplain?
Use Arlington County floodplain maps and FEMA flood maps referenced on the county floodplain program page to confirm flood zone status[1].
What mitigation measures does Arlington prefer?
Common measures include elevating the lowest floor, floodproofing utilities, using flood-resistant materials, and limiting vulnerable uses in the floodplain as described in county guidance[1].

Key Takeaways

  • Check flood maps early and consult the permit center before planning work.
  • Most floodplain work needs permits and documentation such as elevation certificates.

Help and Support / Resources

  1. [1] Arlington County Floodplain Management program and maps
  2. [2] Arlington County Permits and Inspections - Building Permits
  3. [3] Arlington County Code (Municode) - Code of Ordinances

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