Who owns CyrusOne PHX4?

CyrusOne PHX4 is owned and operated by CyrusOne LLC.

Has CyrusOne PHX4 had environmental violations?

As of the latest EPA ECHO sync, no enforcement actions are on record for CyrusOne PHX4.

Where is CyrusOne PHX4 located?

CyrusOne PHX4 is in Chandler, Maricopa County, AZ.

Mapped (unverified)colocation

CyrusOne PHX4

Q: What do data center tax breaks cost in Arizona?

Arizona reported $38.5M in Computer Data Center TPT/Use Tax Exemption (Deduction Code 565; A.R.S. § 41-1519) for FY2025 (Arizona Department of Revenue, Office of Economic Research and Analysis). That is a statewide program figure, not attributable to one site.

2335 South Ellis Street · Chandler, Maricopa County, AZ

Source: OpenStreetMap

CyrusOne PHX4 is a mapped data center in Maricopa County, AZ, operated by CyrusOne LLC. DataCentersExposed has documented a 108,957 sq ft footprint at this site.

Reporting by Eric Keller · Updated Jun 12, 2026

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Est. capacity

~20-45 MW

Footprint

108,957 sq ft

Attribution & capacity confidence:mediumprimary source

Status · click to filter

Most sites are mapped — located but awaiting a second source. How we verify

Dot size = disclosed capacity (MW). Smallest = undisclosed, not small.

Overview

source: link

data center

Operator chain

Ultimate parent
CyrusOne LLC
Files as
CyrusOne LLC
This facility
CyrusOne PHX4

In the news

source: Google News

Data-center discussions in Maricopa County

source: LocalView (CC0)

Local-government meetings in this county that discussed data centers, each cued to the moment. From the public LocalView corpus of government meetings on YouTube — a county-level signal, not necessarily about this specific site.

Phoenix Committee

Jun 14, 2023 · 1 data-center mention

Chandler City Council

Oct 14, 2021 · 1 data-center mention

Chandler City Council

Sep 14, 2020 · 1 data-center mention

Tax breaks & subsidies

source: Good Jobs First / GASB 77

These tax breaks are recorded to CyrusOne LLC (the operator/parent) and may cover this or other sites — no state names the recipient at the facility level.

Dollar value not disclosed for these records.

Texas Qualifying Large Data Center Project Exemption$0
State of Texas · granted 2022 · term — yr · source
Texas Qualifying Data Center Exemption$0
State of Texas · granted 2017 · term — yr · source
Texas Qualifying Data Center Exemption$0
State of Texas · granted 2016 · term — yr · source

Statewide cost of this incentive

Arizona reported $38.5M in Computer Data Center TPT/Use Tax Exemption (Deduction Code 565; A.R.S. § 41-1519) for FY2025 (Arizona Department of Revenue, Office of Economic Research and Analysis). Program-wide, not attributable to this site.

source · All Arizona subsidies →

Water use

No public record of this facility's water use. We check state withdrawal reporting for self-supplied sites; municipally supplied sites only become visible through a public-records request to the local water utility — a per-facility request tool is coming. If you have a utility document for this site, send it to us.

EPA permits & violations

source: EPA ECHO

No reported violations as of last sync.

Nearest school

source: HIFLD / NCES

The nearest public school, Robert And Danell Tarwater Elementary in Chandler, is 1.0 mi from this site (787 students).

Schools are sensitive receptors for the noise, backup-generator exhaust, and traffic a large data center brings. Straight-line distance to the nearest public school (HIFLD/NCES, US public schools only).

Hearings timeline

No public-hearing records linked to this site yet. We surface planning-commission and board-of-supervisors dates when a record names a facility. If you know of a hearing on this site, tell us.