Retaining Walls: Gaithersburg vs Takoma Park
How do retaining walls rules compare between Gaithersburg, MD and Takoma Park, MD?
Gaithersburg and Takoma Park have similar restriction levels.
Gaithersburg, MD
Montgomery County
Gaithersburg permits retaining walls where changes in street grade, width, or alignment make them necessary. Section 24-167 exempts retaining walls from the corner lot sight triangle restriction when they address grade changes. Retaining walls over 4 feet typically require a building permit and engineering review.
View full Gaithersburg rules →Takoma Park, MD
Montgomery County
Retaining walls over 4 feet require a building permit and professional engineer design. Walls cannot redirect stormwater onto neighboring properties. Common in hilly Sligo Creek area.
View full Takoma Park rules →Key Facts Comparison
| Fact | Gaithersburg | Takoma Park |
|---|---|---|
| Permit Threshold | Over 4 feet requires permit | Over 4 feet requires building permit |
| Grade Changes | Retaining walls permitted | - |
| Corner Lots | Exempt from sight triangle | - |
| Engineering | May be required for tall walls | Professional engineer design required over 4 ft |
| Drainage | - | Cannot redirect water onto neighbor property |
| Fence on Top | - | Fence height measured separately from wall |
Highlighted rows indicate differences between cities.
Gaithersburg FAQ
Do I need a permit for a retaining wall in Gaithersburg?
Retaining walls over 4 feet in height generally require a building permit and may need structural engineering review. Shorter walls may still need a permit if they affect drainage or are near property lines.
How is retaining wall height measured?
When a retaining wall also serves as a fence, height is measured from the grade on the higher side. The wall portion and fence portion may be evaluated separately for code compliance.
Takoma Park FAQ
Do I need a permit for a retaining wall in Takoma Park?
Yes, if the wall exceeds 4 feet from bottom of footing to top of wall. Walls under 4 feet may also need permits if they affect drainage or are near property lines.
Can I put a fence on top of a retaining wall?
Yes, but the fence height is measured separately from the retaining wall. The fence portion must meet zoning height limits (4 feet in front yard, 6.5 feet in side/rear).
Compare other topics
See how Gaithersburg and Takoma Park compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool