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Montgomery County, MD Noise Ordinances: Leaf Blower Rules (2026)

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

Key Facts

Sale ban effective
July 1, 2024
Use ban effective
July 1, 2025
Sound cap (other blowers)
70 dBA at 50 feet
Enforcing agency
Dept. of Environmental Protection
Exemption
Zoned agricultural producers

Summary

Montgomery County bans the sale and use of combustion engine-powered handheld, backpack, and walk-behind leaf blowers and vacuums, following a phased 2023 law that took full effect in July 2025.

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

(e) Sale of combustion leaf removal equipment – prohibited. A person must not sell or offer for sale a combustion engine-powered handheld, backpack, or walk-behind leaf blower or leaf vacuum. (f) Use of combustion leaf removal equipment – prohibited. A person must not use a combustion engine-powered handheld, backpack, or walk-behind leaf blower or leaf vacuum.

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

County Code § 31B-9 bans selling combustion-powered handheld, backpack, and walk-behind leaf blowers and vacuums since July 1, 2024, and bans using them since July 1, 2025. Any leaf blower not covered by the combustion ban must still stay under a 70 dBA sound-level cap at 50 feet. The Department of Environmental Protection enforces sales violations, while use violations are cited only after a witness complaint is filed within 7 days of the incident. Agricultural producers on agriculturally assessed land zoned for farming under Zoning Ordinance § 3.2.6 are exempt from Section 31B-9 entirely.

Violations & Fines

Violating the sale or use ban is a Class A civil offense, up to $500 for a first offense and $750 for repeat offenses under County Code § 1-19, with each day a separate violation.

Frequently Asked Questions

Can I still use my old gas leaf blower in Montgomery County?
No. Since July 1, 2025, using a combustion engine-powered handheld, backpack, or walk-behind leaf blower or leaf vacuum is banned countywide under County Code § 31B-9(f).
Are electric leaf blowers still subject to a noise limit?
Yes. Any leaf blower must stay under 70 dBA measured at 50 feet under § 31B-9(a), separate from the combustion sale/use ban.
Is anyone exempt from the leaf blower ban?
Agricultural producers on agriculturally assessed land zoned for farming under Zoning Ordinance § 3.2.6 are exempt from Section 31B-9 entirely.

Sources & Official References

Other rules in Montgomery County

All Montgomery County rules

How Montgomery County compares: Cities with the Strictest Leaf Blower Rules·Compare Montgomery County to another location·View the Maryland noise ordinances overview

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