Menlo Digital MD-PHX1 Phoenix Campus

4801–4811 East Thistle Landing Drive, Phoenix 85044; 38.3 acres.

Operator identifies 38.3-acre redevelopment site. Legal title vehicle not verified.

Operator development program specifies 1,022,400 square feet across five two story buildings, with 204,480 square feet per building; planned building area, not delivered or IT-whitespace area.

As of the October 31, 2026 records, project 23-1632 includes Building 5 permit 26008627, issued July 2, 2026, and Buildings 1–2 core/shell permit 26008875, issued July 17, 2026. Both records are OPEN with no completion date. Issuance does not establish completed construction or commissioning.

The October 31, 2026 permit snapshot lists CLAYCO INC in the company fields for the Building 5 and Buildings 1–2 core/shell permits. Utility only foundation permit 26005012 lists SUNDT CONSTRUCTION; water main permits list RICOR INC. These are scoped permit associated company fields, not proof each party is the whole campus EPC or that construction is complete.

The county separately lists dust facility F054873, ME-PHX DC Buildings 1–5, associated with Clune Construction Company LP and dust application D0063915, for data center campus construction at the southeast corner of 48th Street and Thistle Drive. The dust record’s Operating label is a dust facility administrative status, not proof that the data center or any IT capacity is operating, and not by itself confirmation of ongoing construction on the observation date. No contract value, exact whole campus EPC scope or completed building is established.

The June 2026 air application targets commercial operation of Building 1's 24 emergency generators in Q2 2027. This is a dated forecast distinct from the operator's Q1 2027 first hall target; it establishes neither achieved commissioning nor a verified schedule change.

Water main abandonment permit 26000262 was issued January 7, 2026 and recorded DONE with an April 30, 2026 completion date. New water main permit 26009402 was issued August 6, 2026 and recorded OPEN in the October 31 snapshot. These records do not establish water allocation, cooling design or campus completion.

Menlo Digital identifies Salt River Project as MD-PHX1 utility provider; this does not independently establish an executed supply agreement or energization.

The assessor’s owner field lists ME PHX TECH CAMPUS LLC for parcel 301-84-762 at 4801 East Thistle Landing Drive. The 2023 zoning application identifies parcels 301-84-762, 301-84-763, 301-84-764 and 301-84-765. This is not a title certification or verification of the subsequent parcel transition.

Phoenix City Council ratified stipulation modifications for PHO-2-24--Z-127-96-6 and PHO-1-24--Z-10-96-6 on March 20, 2024. These are zoning case actions, not construction or operating approvals; case acreages must not be added to derive campus area.

Phoenix City Council adopted Resolution 22388 on July 1, 2026 for ABND250032/project 23-1632, approving abandonment of specified drainage and waterline easements at 4801, 4805, 4809 and 4811 East Thistle Landing Drive. This is not a water supply grant.

The 2023 conceptual architectural site plan submitted with PHO-2-24 identifies Gensler and Menlo Equities, with a southeast substation and northeast public open space. The plan is marked NOT FOR CONSTRUCTION; it does not establish current executed architect contracts or as built amenities.

Maricopa County associates MD-PHX1 facility F057422 at 4801 East Thistle Landing Drive, parcel 301-84-899, with ME PHX Tech Campus LLC. This is a facility association, not legal title certification or resolution of the parcel transition from the older assessor/zoning parcel set.

The October 1, 2026 supplement describes the June 2026 non-Title V application as under review at that time. An issued permit has not been independently verified in this review.

The October 1, 2026 supplement proposes 72 Caterpillar C175-16 emergency diesel engines, 24 per building for Buildings 1–3, and changes the proposed configuration to SCR on all 72 engines. This is an application proposal, not evidence of installation or operation, and excludes the other two campus buildings.

Each proposed engine is rated 4,423 bhp with a 3,000 ekW generator set. The supplement describes Miratech SCR designed to meet the Tier 4 NOx standard of 0.5 g/bhp hr; this is aftertreatment performance, not Tier 4 engine certification or proof of actual installation. Backup generator ratings are not IT capacity.

The June 2026 air application addresses emergency backup engines for Buildings 1–3 of a five building campus. The applicant describes utility line power and no onsite baseload generation, and says Buildings 4–5 emergency configurations await tenant specific needs, finalized design and future permitting. This is a dated applicant statement, not evidence that Buildings 4–5 can operate without permits or currently lack tenants.

SWCA Environmental Consultants prepared the June 2026 air permit application and October 1 supplement on behalf of ME-PHX Tech Campus LLC. This establishes an air quality consultant role only, not architect, EPC or general contractor scope.