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.
Under SMC 19.76 hosts are responsible for guest conduct. Residential noise limits from SMC 19.42.030 apply: 60 dBA daytime and 50 dBA nighttime at single-family property lines, with night defined as 10 PM to 7 AM. Hosts must provide guests with written house rules that include quiet hours. Amplified sound, outdoor parties, and bass-producing equipment after 10 PM are prohibited. Three documented noise violations within a 12-month period can result in STR permit revocation. Neighbors may report noise to the Department of Public Safety non-emergency line at (408) 730-7181.
Contact your local code enforcement office for specific penalty information.
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