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Decks, porches and roof decks in Alexandria, VA

Every deck needs a building permit. Open decks up to 2 ft above grade may sit in any yard except the primary front yard, and a one-story front porch up to 10 ft deep may extend into the front yard if 10 ft of front yard remains.

A person last checked these rules on October 20, 2026. This is guidance only, so confirm with Alexandria before you build.

The details

  • In the historic districts, a deck visible from the street also needs BAR approval.High confidence
  • Front porches: first floor or ground level, 10 ft deep max, and no deeper into side yards than the house walls.High confidence

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Common questions

What are the rules for decks, porches and roof decks in Alexandria?
Every deck needs a building permit. Open decks up to 2 ft above grade may sit in any yard except the primary front yard, and a one-story front porch up to 10 ft deep may extend into the front yard if 10 ft of front yard remains.

Sources

  1. City of Alexandria Code Administration, PP 2012-01 When is a permit required (April 12, 2012). Checked 2026-10-20
    Other City agencies [Planning and Zoning, Board of Architectural Review, Transportation and Environmental Services, Health Department] may still need to review and approve work even when no building permit is required... For specific requirements, contact t…
  2. City of Alexandria Zoning Ordinance § 7-202, permitted obstructions in required yards (Municode, Supp. 103). Checked 2026-10-20
    (A) In all yards: (1) Open fences which do not exceed four feet in height... (B) In any yard except a primary front yard: ... (3) Open terraces and decks not over two feet above the average level of the adjoining ground and two feet above ground at any prop…

Disclaimer: This is general information, not legal or professional advice for any one property. Codes change. SetbackIQ is not a zoning determination, a permit, or a survey, and it does not replace an architect, engineer, or lawyer. Confirm with your building and zoning offices before you build, buy, or sign a contract.