Noise Rules: Mountain View vs Sunnyvale
How do noise rules rules compare between Mountain View, CA and Sunnyvale, CA?
Mountain View has fewer restrictions than Sunnyvale.
Mountain View, CA
Santa Clara County
Short-term rental guests in Mountain View must comply with the citywide noise ordinance, with quiet hours typically 10 PM to 7 AM and amplified sound restrictions that apply to any residence.
View full Mountain View rules →Sunnyvale, CA
Santa Clara County
Sunnyvale STR hosts must enforce the city noise ordinance (SMC 19.42) with guests. Quiet hours run 10 PM to 7 AM with 50 dBA nighttime limit at property lines.
View full Sunnyvale rules →Key Facts Comparison
| Fact | Mountain View | Sunnyvale |
|---|---|---|
| Quiet hours | 10 PM - 7 AM typical | - |
| Host responsibility | Liable for guest noise | - |
| Amplified sound | Restricted at night | - |
| Complaint-driven | Police response standard | - |
| Repeat penalty | License review possible | - |
| Quiet Hours | - | 10 PM - 7 AM |
| Night Limit | - | 50 dBA |
| Revocation Trigger | - | 3 violations in 12 months |
| Report Line | - | (408) 730-7181 |
| Code | - | SMC 19.42 and 19.76 |
Highlighted rows indicate differences between cities.
Mountain View FAQ
Am I liable if my Airbnb guests throw a loud party?
Yes. Mountain View holds STR operators responsible for guest conduct. Repeated violations can lead to citations and license impacts.
Can I allow amplified music outdoors for guests?
Only during daytime hours and below disturbing levels. Outdoor amplified sound at night will typically violate the noise ordinance.
Sunnyvale FAQ
Will the city revoke my STR permit for one noisy party?
One incident is unlikely to revoke a permit, but three documented violations within 12 months can trigger suspension or revocation under SMC 19.76.
Do STR guests get more leeway on noise than residents?
No. Guests are held to the same 50 dBA nighttime and 10 PM quiet-hour rules as any Sunnyvale resident.
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