Pools and hot tubs across the DC area
How far from the lot line can a pool go, and what permits does it need? The rules differ at every jurisdiction line. Here is the short answer for each.
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.
| Where | Short answer |
|---|---|
| Washington, DC | Only a small prefabricated above-ground pool is exempt. Any other pool needs building and electrical permits, a barrier, and usually a DOEE erosion and sediment control plan for the excavation. |
| Montgomery County, MD | Pools and hot tubs need a DPS permit unless the pool is prefabricated and under 18 in deep. A pool is an accessory structure and follows the zone's accessory setbacks. |
| Prince George's County, MD | Pools need a building permit. A pool at a house must be 8 ft from the rear line and 5 ft from side lines, and enclosed by a fence at least 6 ft high. |
| Alexandria, VA | A private swimming pool is a permitted accessory use (§ 7-101). In-ground pools need a soil report or a 1,500 psf design, and pool pumps must meet the 55 dBA limit at the property line and stay out of the front yard. |
| Arlington County, VA | In-ground pools count toward lot coverage. Above-ground pools and hot tubs don't. Pool equipment stays 8 ft from side lines and 10 ft from the rear line unless screened, and pool lights must be hooded. |
| Fairfax County, VA | A pool is a freestanding accessory structure: allowed in side and rear yards, counted toward the 30% rear setback coverage cap with its decking, and needing a building permit unless it's 150 sq ft or less and under 24 in deep. |
Towns and cities inside these counties (for example, Rockville, Gaithersburg, Bowie, Laurel, Herndon, Vienna, and Falls Church) have their own rules.