Sunnyvale, CA Data Centers & Crypto Mining: Data Center Noise Limits (2026)
Key Facts
- Code
- Muni Code Sec. 19.42.030
- Home limit
- 60 dBA day / 50 night
- Nonresidential limit
- 70 day / 60 night
- Industrial limit
- 75 dBA daytime
- Measured at
- Receiving property line
Summary
Sunnyvale caps operational noise under Municipal Code Sec. 19.42.030. At an adjacent single-family or duplex property line the limit is 60 dBA daytime and 50 dBA nighttime. Industrial and manufacturing uses may reach 75 dBA daytime at the adjacent property line. Data-center cooling and generators must comply.
Operational noise shall not exceed 50 dBA during nighttime or 60 dBA during daytime hours at any point on the property line of the adjacent single-family or duplex uses. ... Operational noise generated at industrial, manufacturing, or similar uses shall not exceed 75 dBA during daytime hours at the adjacent property line.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4856529; v14 updated 2026-05-19).
Full Breakdown
Sunnyvale's operating standards, Municipal Code Sec. 19.42.030, set operational-noise limits measured at the receiving property line. At an adjacent single-family or duplex use the cap is 60 dBA daytime and 50 dBA nighttime; multi-family open space is 65/55; and residences along major transportation corridors are 70/60. Against an adjacent nonresidential use the limit is 70 dBA day and 60 dBA night, and industrial or manufacturing uses may reach 75 dBA daytime. A data center's continuous cooling towers, chillers, and backup generators are held to the nearest receiver's limit - the 50 dBA nighttime residential floor is the binding constraint where an industrial site abuts homes.
Violations & Fines
Operational noise over the Sec. 19.42.030 limits is a zoning violation enforced by the City, and can breach the noise conditions imposed on a data center's Use Permit.
Frequently Asked Questions
How loud can a data center be in Sunnyvale?
What noise rule protects homes near a Sunnyvale data center?
Sources & Official References
Other rules in Sunnyvale
California rules heatmap·Compare Sunnyvale to another location·View the California data centers & crypto mining overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.
Data Center Noise Limits in Nearby Cities
How other cities in Santa Clara County handle data center noise limits.