Rockville, MD Building Setbacks & Zoning: Structure Height Limits (2026)
Key Facts
- R-90/75/60/40 height cap
- 35 ft. maximum
- R-400/200/150 height cap
- 40 ft. maximum
- Measured for
- principal dwelling structures
- Applies to
- small- and large-lot residential zones
Summary
Rockville zoning caps single-unit residential building height at 35 feet in the small-lot zones and 40 feet in the large-lot zones, set by the Zoning Ordinance's dimensional tables.
Standard R-90 R-75 R-60 R-40 ... F Building Height (Max.) 35 ft. 35 ft. 35 ft. 35 ft.
Full Breakdown
Under the Rockville Zoning Ordinance, maximum building height for a principal structure is set per zone in the Article 7 dimensional tables. In the small-lot single-unit zones, R-90, R-75, R-60, and R-40, Table 7.1.4-1 caps building height at 35 feet. In the large-lot single-unit zones, R-400, R-200, and R-150, Table 7.1.3-1 sets the cap at 40 feet. These are maximum heights for the principal dwelling; height for accessory structures and specific use types such as freestanding Renewable Energy Systems is governed separately elsewhere in the ordinance.
Violations & Fines
Constructing a principal dwelling above the applicable 35- or 40-foot cap without an approved height exception or variance is a zoning violation subject to enforcement and required remediation.
Frequently Asked Questions
How tall can a house be built in Rockville?
Is the residential building height limit the same across Rockville?
Sources & Official References
Other rules in Rockville
Compare Rockville to another location·View the Maryland building setbacks & zoning overview
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Structure Height Limits in Nearby Cities
How other cities in Montgomery County handle structure height limits.