Gaithersburg enforces building setback requirements through its zoning ordinance. Setbacks vary by zoning district and determine how far structures must be from property lines, streets, and other buildings. The city has multiple residential, commercial, and mixed-use zoning districts, each with specific front, side, and rear yard setback requirements. Planned development communities like Kentlands have their own approved setbacks.
The Gaithersburg Zoning Ordinance (Chapter 24 of the Code of Ordinances) establishes minimum setback requirements for all structures. Setbacks vary significantly by zoning district. In standard single-family residential zones (R-A, R-B, R-C), typical front yard setbacks range from 25 to 40 feet, side yard setbacks from 8 to 15 feet, and rear yard setbacks from 25 to 30 feet. Townhouse zones have reduced side setbacks, often 0 feet for attached walls and 10-15 feet at end units. Commercial and mixed-use zones have their own setback requirements, which may be reduced or eliminated for buildings in urban-style development areas. Planned development districts such as Kentlands, Lakelands, and Washingtonian have setbacks established through their approved development plans, which may differ substantially from standard zoning district requirements. These communities were designed with new urbanist or traditional neighborhood development principles that often feature reduced front setbacks and build-to lines rather than minimum setbacks. Accessory structures (sheds, detached garages, pools) typically have reduced setback requirements, often 3 to 5 feet from side and rear property lines. Corner lots may have increased setback requirements on the street-facing side yard. Variances from setback requirements require approval from the Board of Appeals. Contact Gaithersburg Planning and Code Administration at 301-258-6330 for setback requirements specific to your property.
Building within a required setback without a variance is a zoning violation. The city may issue a stop-work order during construction and require removal or modification of the non-compliant structure. Fines for setback violations can reach $1,000 per day. Retroactive variances are difficult to obtain and not guaranteed.
Gaithersburg, MD
Montgomery County Bill 35-20 bans gas-powered leaf blowers countywide effective January 1, 2025, which applies within Gaithersburg. Only battery-electric and...
Gaithersburg, MD
Gaithersburg enforces noise regulations under City Code Chapter 15 and Montgomery County Code Chapter 31B. Noise that is plainly audible beyond property boun...
Gaithersburg, MD
Gaithersburg addresses barking dog complaints through City Code Chapter 15 noise provisions and Montgomery County animal control regulations. Dogs that bark ...
Gaithersburg, MD
Montgomery County Code Chapter 31B sets specific decibel limits for Gaithersburg based on zoning and time of day. Residential zones are limited to 65 dBA day...
Gaithersburg, MD
Gaithersburg requires EV charging pre-wiring in new residential construction. Maryland law effective October 2022 prohibits non-EVs from parking in designate...
Gaithersburg, MD
Gaithersburg regulates street parking through Chapter 14 of the city code and a Residential Permit Parking program updated in 2025. Parking restrictions vary...
Side-by-side rule comparisons with other cities in Montgomery County.
See how other cities in Montgomery County handle setback rules.
See how Gaithersburg's setback rules rules stack up against other locations.
Quick Compare
Help us keep this page accurate. If you notice an error or outdated information, let us know.