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Montgomery County, MD Historic Preservation: Historic-Cultural Monuments (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Permit required for
exterior alteration, demolition, signage
Reviewing body
Historic Preservation Commission
Decision deadline
45 days after application filed
Penalty
Class A violation, daily separate offense
Exemption
ordinary maintenance, no material effect

Summary

Montgomery County requires an Historic Area Work Permit before altering, demolishing, or erecting signs on any designated historic site, resource, or district, enforced by the county's Historic Preservation Commission under Chapter 24A of the County Code.

City-specific rules exist: Rockville has its own historic-cultural monuments rules that differ from Montgomery County's county-level regulations. If you live in Rockville, check the city-specific page instead.

An historic area work permit for work on public or private property containing an historic resource must be issued pursuant to the provisions of this chapter before: (1) Constructing, reconstructing, moving, relocating, demolishing or in any manner modifying, changing or altering the exterior features of any historic site or any historic resource located within any historic district.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-90: Montgomery County Code contains legislation effective through May 7, 2026 | Zoning Updated Effective: April 13, 2026 | COMCOR Regulations effective as of July 1, 2026).

Full Breakdown

Before constructing, demolishing, relocating, or otherwise altering the exterior features, environmental setting, or signage of any property designated as a historic site or located within a historic district, an owner must obtain a Historic Area Work Permit under County Code Chapter 24A. The Historic Preservation Commission reviews applications at a public meeting and must instruct the Director of Permitting Services to issue or deny the permit within 45 days of filing. Ordinary maintenance and repair that has no material effect on the resource is exempt. Applicants for demolition or substantial exterior alteration must disclose the property's historic designation in writing.

Violations & Fines

Working without a permit, or violating any Commission decision or permit condition, is a class A violation under County Code § 1-19: each day of continued violation is a separate offense.

Frequently Asked Questions

Do I need a permit to repaint or repair my historic home in Montgomery County?
No: ordinary maintenance and repair that doesn't materially affect the historic resource is exempt from the Historic Area Work Permit requirement under County Code § 24A-6(b).
What happens if I alter a historic property without a permit in Montgomery County?
You're subject to a class A violation under County Code § 1-19, with each day the violation continues counted as a separate offense.

Sources & Official References

Other rules in Montgomery County

All Montgomery County rules

Compare Montgomery County to another location·View the Maryland historic preservation overview

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