Chandler, AZ Data Centers & Crypto Mining: Data Center Noise Limits (2026)
Key Facts
- Standard
- Not exceed ambient baseline
- Generators
- 9am-5pm Mon-Fri only
- On-site liaison
- 8am-10pm daily
- Annual noise study
- 5 years post-build
- Code
- Sec. 35-2214(4)-(7)
Summary
Chandler sets no fixed decibel cap for data centers; instead a data center's sound may not exceed the ambient baseline noise levels measured before construction, verified by third-party acoustic engineers at the nearest residential property line. Backup generators may run only weekday daytime hours.
The Data Center must be designed and built to incorporate sound mitigation methods sufficient to prevent the sound levels emanating from the Data Center (as determined by a third-party acoustic engineer) from exceeding the ambient noise levels that were observed in the baseline study. Design specifications for such sound mitigation must be provided to the City before building permit approval.
Full Breakdown
Under Section 35-2214, a third-party acoustic engineer must document baseline sound levels at the nearest residential (or noise-sensitive) property line before the first neighborhood meeting. The data center must be designed so its sound does not exceed that ambient baseline, with mitigation specifications submitted before building permit approval. A post-occupancy noise study is required, then repeated annually during peak mechanical operation for five years. An on-site liaison must field noise complaints daily from 8 a.m. to 10 p.m. Backup generators may operate only 9 a.m. to 5 p.m., Monday through Friday (excluding holidays), unless covering a power outage, with 24-hour public notice.
Violations & Fines
Failing the baseline sound standard, mitigation design, annual noise studies, or generator hours is a Zoning Code violation enforced by Development Services and the Zoning Administrator. An on-site liaison must respond to noise complaints daily, 8 a.m. to 10 p.m.
Frequently Asked Questions
How loud can a Chandler data center be?
When can backup generators run?
Sources & Official References
Other rules in Chandler
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