Bellevue, WA Noise from Specific Sources: Generator Noise (2026)
Key Facts
- Stationary generator outage cap
- 75 dBA at property line
- Daytime exemption (power on)
- 9:00 a.m.-6:00 p.m., Class A zones
- Portable generator exemption
- only during actual outage
- Noise disturbance penalty
- $250.00 civil infraction
Summary
Bellevue exempts portable and stationary backup generators from its noise code only while the power is actually out from a disaster or outage, capping stationary units at 75 dBA at the property line; run one for convenience with power available and it falls under the general decibel limits.
4. Sounds created by portable generators during periods when there is no electrical service available from the primary supplier due to natural disaster or power outage; 5. Sounds created by stationary generators that do not exceed a sound level of 75 dBA at any property line during periods when there is no electrical service available from the primary supplier due to natural disaster or power outage;
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 6929, passed July 14, 2026).
Full Breakdown
020(A)(4) exempts sounds created by portable generators, but only during periods when there is no electrical service available from the primary supplier due to natural disaster or power outage. 020(A)(5) extends a similar exemption to stationary generators for the same outage circumstance, but caps them at a sound level of 75 dBA at any property line. daily when electrical service is available from the primary supplier, folded into the same daytime exemption window that covers vehicle repair sounds. 040. The development services department enforces the numeric limits and stationary-source provisions, while Bellevue police enforce noise-disturbance complaints.
Violations & Fines
A stationary generator exceeding 75 dBA during an outage, or any generator run outside its exempt hours and above the BCC 9.18.030 decibel table, is a civil violation under Chapter 1.18 BCC subject to a monetary penalty and abatement, or a civil noise infraction under BCC 9.18.040 carrying a $250.00 penalty per citation.
Frequently Asked Questions
Can I run a generator overnight in Bellevue during a power outage?
Can I test or run my generator when the power is on?
What's the penalty for a noisy generator complaint in Bellevue?
Sources & Official References
Other rules in Bellevue
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