AZ-MESA-002
Mesa, Maricopa County, Arizona · enterprise data center Reported
Evidence timeline
8 chronological entries- 24 Jul 2025Shell entity ownershipInferred
Title is held by MECP1 MESA 2 LLC, whose name shows single-purpose-entity characteristics (pass-through legal form (LLC); alphanumeric project-code naming pattern). This is a weak signal only: project-specific entities are routine in ordinary commercial real estate and imply no particular parent.
OwnerName = MECP1 MESA 2 LLCSource: Maricopa County Assessor Parcel LayerView original evidenceRetrieved 2026-07-25sha256:77af6d6d43fe$.features[13].attributes.OwnerNameExtraction confidence 45% - 24 Jul 2025Stage advanced to Operational
Stage advanced from 0 (No known development) to 7 (Operational) at 54% confidence. Principal evidence: Assessor classifies property use as data centre; Grading or construction permit; Grading or construction permit.
Unclassified → OperationalDetected 369 days after the factConfidence at transition 54% - 22 Apr 2026Grading or construction permitReported
City of Mesa commercial building permit PMT26-05458 at 3856 S EVERTON TERR, opened 2026-03-20, status: In Review - Plans are being reviewed or awaiting revisions. Matched to parcels by normalized address; no coordinates in source.
PMT26-05458; COM; 3856 S EVERTON TERR; In Review - Plans are being reviewed or awaiting revisionsSource: City of Mesa Building PermitsView original evidenceRetrieved 2026-07-25sha256:55cca827c961$[44]Extraction confidence 75% - 12 May 2026Grading or construction permitReported
City of Mesa commercial building permit PMT26-00788 at 3856 S EVERTON TERR, opened 2026-01-12, status: Issued - Permit approved and issued and in inspection phase. Matched to parcels by normalized address; no coordinates in source.
PMT26-00788; COM; 3856 S EVERTON TERR; Issued - Permit approved and issued and in inspection phaseSource: City of Mesa Building PermitsView original evidenceRetrieved 2026-07-25sha256:55cca827c961$[74]Extraction confidence 75% - 14 Jul 2026Grading or construction permitReported
City of Mesa commercial building permit PMT26-11828 at 3856 S EVERTON TERR, opened 2026-06-29, status: In Review - Plans are being reviewed or awaiting revisions. Matched to parcels by normalized address; no coordinates in source.
PMT26-11828; COM; 3856 S EVERTON TERR; In Review - Plans are being reviewed or awaiting revisionsSource: City of Mesa Building PermitsView original evidenceRetrieved 2026-07-25sha256:55cca827c961$[10]Extraction confidence 75% - 14 Jul 2026Grading or construction permitReported
City of Mesa commercial building permit PMT26-06976 at 3856 S EVERTON TERR, opened 2026-04-13, status: Issued - Permit approved and issued and in inspection phase. Matched to parcels by normalized address; no coordinates in source.
PMT26-06976; COM; 3856 S EVERTON TERR; Issued - Permit approved and issued and in inspection phaseSource: City of Mesa Building PermitsView original evidenceRetrieved 2026-07-25sha256:55cca827c961$[36]Extraction confidence 75% - 25 Jul 2026Dedicated substation proximityCalculatedStanding condition
Howard Substation tagged 69 kV lies 82 m from the site boundary, close enough for a dedicated connection to be practical. Proximity is a locational precondition, not evidence that this substation serves the site.
name = Howard Substation; operator = Salt River Project; max_voltage_kv = 69.0Source: OpenStreetMap Power Infrastructure (Overpass API)View original evidenceRetrieved 2026-07-25sha256:b780b9bfc5c6OSM elementExtraction confidence 93% - 28 Jul 2026Assessor data center classificationReportedStanding condition
Maricopa County Assessor currently classifies this parcel's property use as DATA CENTERS (use code 1507).
PropertyUseDescription = DATA CENTERSSource: Maricopa County Assessor Parcel LayerView original evidenceRetrieved 2026-07-25sha256:77af6d6d43fe$.features[13].attributes.PropertyUseDescriptionExtraction confidence 95%
Why Helios believes this
40% ModerateScored by helios-rule-based version 0.1.0 on 2026-07-28, using evidence available as of 2026-07-28. Weights are domain-reasoned starting points, not values fitted to outcomes; calibration is deferred until a historical backtest exists to calibrate against.
Location
Estimated demand
none of this is a filed figure8.7 MW
4.4plausible range17.5
Assembled acreage x assumed power density, adjusted for stage.
What this assumes
Power density is an industry assumption, not a property of this site. Helios does not know the building footprint, rack density or how much of the assembled land will be built on.
- stage
- 7
- total acres
- 3.6364
- MW per acre low
- 1
- MW per acre high
- 4
- MW per acre likely
- 2
- stage density multiplier
- 1.2
104,400 GPD
10,560plausible range420,000
Estimated power x assumed cooling water intensity.
What this assumes
Cooling type is not recorded in any source Helios ingests. A closed-loop or air-cooled design approaches zero water use; evaporative cooling can exceed a gallon per kWh. The band is wide because the practice is.
- gal per kwh low
- 0.1
- gal per kwh high
- 1
- gal per kwh likely
- 0.5
Operator and ownership
Operator not established- pass-through legal form (LLC)
- alphanumeric project-code naming pattern
Helios records the entity of record only. Shell-company indicators are flags for human review and do not constitute an attribution to any parent.
Parcels
| APN | Address | Acres | Deed |
|---|---|---|---|
| 304-31-955 | 3856 S EVERTON TER | 3.64 | 2025-07-24 |
Infrastructure dependencies
10 further dependencies not shown.
Dependencies are inferred from spatial proximity. A nearby substation makes a connection practical; it is not evidence that one exists.
Attribution
- Parcel data courtesy of Maricopa County Assessor / Maricopa County GIS.
- Power infrastructure data (c) OpenStreetMap contributors, ODbL.