Construction hours and noise in Fairfax County, VA
Construction is generally allowed 7 a.m. to 9 p.m. on weekdays and 9 a.m. to 9 p.m. on weekends and holidays, with a 90 dB limit at residential property lines.
A person last checked these rules on October 20, 2026. This is guidance only, so confirm with Fairfax County before you build.
The details
- Code Compliance handles decibel-based complaints. Police handle after-hours noise.High confidence
Check a project at your address
SetbackIQ reads the zoning, flood zone, historic district, and environmental maps for your lot. Then it applies these rules.
Common questions
- What hours can construction happen, and how loud can equipment be in Fairfax County?
- Construction is generally allowed 7 a.m. to 9 p.m. on weekdays and 9 a.m. to 9 p.m. on weekends and holidays, with a 90 dB limit at residential property lines.
Sources
- Fairfax County Zoning Administration, Noise Ordinance (Chapter 108.1). Checked 2026-10-21
Construction activities are generally allowed between 7 a.m. - 9 p.m. Monday - Friday, and 9 a.m. - 9 p.m. on weekends and holidays, with noise restricted to 90 dB at property boundaries in residential areas... [The chart covers] heat pumps, air conditioner…
Disclaimer: This is general information, not legal or professional advice for any one property. Codes change. SetbackIQ is not a zoning determination, a permit, or a survey, and it does not replace an architect, engineer, or lawyer. Confirm with your building and zoning offices before you build, buy, or sign a contract.