Data Centers & Crypto Mining in Chandler, AZ

If you live in Chandler or are thinking about moving there, data centers & crypto mining are one of those things you probably won't think about until they affect you directly. Chandler has 4 specific rules on the books covering different aspects of data centers & crypto mining, and some of them might surprise you.

Crypto Mining Rules

Chandler has no cryptocurrency-mining-specific ordinance. A commercial crypto-mining facility housing networked computer systems fits the city's data center definition, so it is permitted only within a Planned Area Development and is subject to the same notice, sound-mitigation, and backup-generator rules.

Key details: Crypto-specific rule: None. Treated as: Data center use. Zoning: PAD required. Noise/generator rules: Same as data centers. Code: Sec. 35-200, 35-2214.

Operating a commercial cryptocurrency-mining facility outside an approved Planned Area Development district is an unlawful use under Chandler's Zoning Code, subject to enforcement by Development Services and the Zoning Administrator.

Data Center Moratoriums

Chandler has not enacted a formal moratorium or numeric cap on data centers. Its 2022 zoning amendment instead acts as a de-facto restriction: new data centers require discretionary Planned Area Development approval, and the City Council has rejected proposals it found incompatible with surrounding neighborhoods.

Key details: Formal moratorium: None. Numeric cap: None. Mechanism: Discretionary PAD approval. Existing centers: Grandfathered, unaffected. Council action: Has rejected proposals.

There is no moratorium to violate. A data center that proceeds without Planned Area Development approval is an unlawful use subject to Zoning Code enforcement by Development Services, including stop-work orders and permit denial.

Data Center Zoning & Siting

Data centers may operate in Chandler only if explicitly approved within a Planned Area Development (PAD) zoning district. A 2022 amendment, Ordinance 5033, removed by-right siting in employment corridors, citing few post-construction jobs on high-value land.

Key details: Primary use: PAD zoning only. Ancillary limit: 10% of building footprint. Third-party leasing: Not allowed (ancillary). Ordinance 5033: Effective Jan 5, 2023. Code section: Sec. 35-2214.

Building or operating a data center outside an approved Planned Area Development district is an unlawful use under Chandler's Zoning Code, subject to enforcement by Development Services and the Zoning Administrator, including stop-work orders and permit denial.

This is not one of those rules that cities tend to ignore. Chandler actively enforces its data center zoning & siting requirements.

Data Center Noise Limits

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.

Key details: 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).

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.

Compared to other cities, Chandler takes a harder line on data center noise limits. The enforcement and penalty structure reflects that.

The Bottom Line

Chandler is tougher than many cities when it comes to data centers & crypto mining. Out of the 4 rules covered here, 2 are rated strict. If you are a homeowner, renter, or business owner in Chandler, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

Keep in mind that Chandler can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.