Howard County, MD Noise Ordinances: Construction Hours (2026)
Construction hours in Howard County, MD, sometimes called construction noise rules or contractor work-hour ordinances, set when contractors can run power tools, hammers, and heavy equipment.
Key Facts
- Daytime construction cap
- 90 dBA
- Daytime hours
- 7:00 a.m. to 10:00 p.m.
- Nighttime limit
- 55 dBA (Table 1)
- Blasting / pile-driving
- 8:00 a.m. to 5:00 p.m. only
- Authority
- COMAR 26.02.03.02C
Summary
Construction and demolition noise in Howard County is governed by the state standard the County Code adopts. COMAR 26.02.03.02 lets construction sites reach 90 dBA during daytime hours (7 a.m.–10 p.m.) but requires them to meet the ordinary residential limits (55 dBA) at night.
A person may not cause or permit noise levels emanating from construction or demolition site activities which exceed: (a) 90 dBA during daytime hours; (b) The levels specified in Table 1 during nighttime hours.
Full Breakdown
Howard County's Section 8.900 ties residential noise to Maryland's COMAR 26.02.03 environmental-noise standards, and construction gets its own allowance in COMAR 26.02.03.02C. During daytime hours a construction or demolition site may emit up to 90 dBA; during nighttime hours (10:00 p.m.–7:00 a.m.) it must fall back to the general Table 1 limits, meaning 55 dBA at a residential receiving property. Blasting for demolition, construction, mining or quarrying and pile-driving are separately confined to 8:00 a.m. to 5:00 p.m. under the ordinance's exemption schedule. There is no countywide flat 'no work before 7 a.m.' rule beyond these dBA-and-hour limits, but off-hours construction that exceeds 55 dBA at a home is a violation.
Violations & Fines
Construction noise over the limits is enforced under Section 8.900 as a Class E civil offense (first violation) or Class D (subsequent), with civil penalties under Title 24.
Frequently Asked Questions
How loud can construction be in Howard County?
When can blasting or pile-driving happen?
Sources & Official References
Other rules in Howard County
How Howard County compares: Cities with the Strictest Construction Hours·Compare Howard County to another location·View the Maryland noise ordinances overview
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