NTT Phoenix PH6

NTT Phoenix PH6 is a proposed NTT data center building of about 195,408 square feet on a site of about 101 acres at 10256 E Elliot Rd in Mesa, according to Mesa's design review notice. It was on the agenda of Mesa's Design Review Board on January 13, 2026.

Proposed data center in 10256 E Elliot Rd, Mesa. Operated by NTT.

Where it stands

Mesa's Design Review Board listed PH6 for design review on January 13, 2026, and AZBEX reported that the board met to discuss the aesthetics and landscape plans and took no action. Mesa's open data lists a foundation permit for a 188,093 SF data center and a civil site permit, both Fees Paid with no issue date when read on November 13, 2026, and neither names PH6 or PH7. Baxtel gives 2029 as the year planned for PH6.

The short version

Why is PH6 one building instead of two?

• A design review narrative by Corgan dated November 11, 2025 combines the originally proposed PH6 and PH7 into a single building referenced as PH6, reducing the campus from 7 to 6 buildings.
• AZBEX reported the combined building at 195.4KSF. In October 2026, ABC15 reported that NTT says it is working toward all seven data centers planned for the property.

Where does it stand with the city?

• AZBEX reported that Mesa's Design Review Board met on January 13, 2026 to discuss the building's aesthetics and landscape plans and took no action.
• Mesa's open data lists a foundation permit for a 188,093 SF data center and a civil site permit, both "Fees Paid" with no issue date on November 13, 2026. They do not name PH6 or PH7, and no record cited here links them to an NTT PH name.
• Baxtel gives 2029 as the year planned, and datacenterHawk says the building has not yet been commissioned or leased.

Who is building it?

• AZBEX reported that NTT Global Data Centers Americas is the owner, Corgan the design firm and Colliers Engineering & Design the engineer.
• Maricopa County lists Clayco on a dust control record named "NTT PH6", a construction record.

Where it is

Outlined in yellow: NTT's parcel at 10256 E Elliot Rd, Mesa, the campus that holds PH1 to PH6. It shows the land, not where buildings would go. Parcels: Maricopa County Assessor, Parcel 304-01-006N (NTT Global Data Centers PH LLC). Shapes: Maricopa County Assessor (read November 7, 2026).

Open in Google Maps

• Floor area: 195,408 sq ft
• Expected: 2029

Timeline

1. August 24, 2021: NTT announced a 102-acre Mesa campus of seven data centers with 240MW of critical IT load and an on-site dedicated substation, AZBEX reported. Source: AZBEX (republishing NTT Ltd release), NTT Ltd Building 1.5MSF Mesa Data Center
2. November 11, 2025: A design review narrative by Corgan for Mesa combined the originally proposed PH6 and PH7 into one building referenced as PH6, cutting the campus from 7 to 6 buildings. Source: City of Mesa (applicant narrative by Corgan), Project Narrative, NTT PH6 Design Review Submission, DRB25-00900
3. January 13, 2026: Mesa's Design Review Board listed PH6, case DRB25-00900, a data center of about 195,408 sq ft, for design review, and AZBEX reported that no action was taken. Source: City of Mesa, Legistar matter DSN 26001, DRB25-00900 NTT Data Centers PH6

Working here

Per-facility headcount is not published here: no reliable public figures exist for these sites, and construction announcements are not permanent employment. Open Arizona roles at this operator, where there are any, are listed on the operator's company page.

Rest of this campus

• NTT Phoenix PH1
  NTT · 10256 E Elliot Rd, Mesa · Operating · 36 MW
• NTT Phoenix PH2
  NTT · 10256 E Elliot Rd, Mesa · Operating · 50 MW · 235,550 sq ft
• NTT Phoenix PH3
  NTT · 10256 E Elliot Rd, Mesa · Operating · 50 MW · 235,550 sq ft
• NTT Phoenix PH4
  NTT · 10256 Elliot Rd, Bldg 4, Mesa · Temporary certificate of occupancy · 36 MW
• NTT Phoenix PH5
  NTT · 10256 E Elliot Rd, Mesa · Proposed

Other NTT facilities in Arizona

• NTT Mesa PH10 (Pacific Proving site)
  NTT · Pecos Road and the Crismon Road alignment, Mesa · Planning and Zoning Board approval reported · 2.3M sq ft

News

Stories in Arizona AI's news feed that name this facility, newest first.

• May 17, 2026
  Japanese company s East Valley data center campus moves forward
  NTT Data Group acquired 173 acres in Mesa for a planned $300 million data center project, advancing development of the campus.
• May 17, 2026
  Japanese company's East Valley data center campus moves forward
  NTT Data Group Corp. has acquired 173 acres in Mesa for its $300 million data center project, allowing the massive development to move forward.

All Arizona AI news

How we know this

Compiled from public records and checked on 2026-11-13. Confidence in this record: high. Blank figures mean the number is not publicly established, not that it is zero.

Each statement on this page is listed with the page it came from and the words that say it. Sources open in a new tab.

• Status: Design review filed

  • [1] City of Mesa, City of Mesa Legistar matter DSN 26001 (DRB25-00900) (read October 7, 2026): DRB25-00900. "NTT Data Centers PH6," 101± acres located at 10256 East Elliot Road. Design Review for an approximately 195,408 sq.ft. Data Center. <MatterAgendaDate> 2026-01-13T00:00:00 </MatterAgendaDate> [...] <MatterBodyName> Design Review Board </MatterBodyName>
  • [2] datacenterHawk, NTT Global Data Centers PH6 | E Elliot Road and S Signal Butte Road, Phoenix - datacenterHawk (read October 7, 2026): This facility has not yet been commissioned or leased.
  • [3] Baxtel, NTT PH6 Data Center (read October 7, 2026): Short Code: Building 6 Year Planned: 2029

• Floor area: 195,408 sq ft

  Note: The city design review gives this as an approximate size.

  • [1] City of Mesa, City of Mesa Legistar matter DSN 26001 (DRB25-00900) (read October 7, 2026): DRB25-00900. "NTT Data Centers PH6," 101± acres located at 10256 East Elliot Road. Design Review for an approximately 195,408 sq.ft. Data Center.

• Expected: 2029

  Note: A listing site gives 2029 as the year planned.

  • [3] Baxtel, NTT PH6 Data Center (read October 7, 2026): Short Code: Building 6 Year Planned: 2029

• Location: 10256 E Elliot Rd, Mesa

  Note: The county addresses the whole 101-acre campus parcel; PH6 has no address of its own. Mesa design review case DRB25-00900 names the same address for PH6.

  • [1] City of Mesa, City of Mesa Legistar matter DSN 26001 (DRB25-00900) (read October 7, 2026): DRB25-00900. "NTT Data Centers PH6," 101± acres located at 10256 East Elliot Road.
  • [4] Maricopa County Assessor, Parcel 304-01-006N (read November 7, 2026): NTT GLOBAL DATA CENTERS PH LLC; 10256 E ELLIOT RD MESA 85212

• Mesa's Design Review Board listed PH6 for design review on January 13, 2026, and AZBEX reported that the board met to discuss the aesthetics and landscape plans and took no action.

  • [1] City of Mesa, Legistar matter DSN 26001, DRB25-00900 NTT Data Centers PH6 (January 6, 2026): 101± acres located at 10256 East Elliot Road. Design Review for an approximately 195,408 sq.ft. Data Center.
  • [5] AZBEX, 2 Data Center Projects Advancing in Metro Phoenix (January 16, 2026): The Mesa Design Review Board met to discuss the aesthetics and landscape plans on Jan. 13. No action was taken.

• Mesa's open data lists a foundation permit for a 188,093 SF data center and a civil site permit, both Fees Paid with no issue date when read on November 13, 2026, and neither names PH6 or PH7.

  • [6] City of Mesa, Building Permits (Commercial, Residential and Signs), permit PMT26-09976 (read November 13, 2026): Underground and foundation only. Under slab utilities, New unlimited area construction II-B, 188,093 SF data center. "status":"Fees Paid"

• Baxtel gives 2029 as the year planned for PH6.

  • [3] Baxtel, NTT PH6 Data Center (read November 13, 2026): Short Code: Building 6 Year Planned: 2029

• In Mesa design review in January 2026 for a building of about 195,400 sq ft.

  • [1] City of Mesa, City of Mesa Legistar matter DSN 26001 (DRB25-00900) (read October 7, 2026): DRB25-00900. "NTT Data Centers PH6," 101± acres located at 10256 East Elliot Road. Design Review for an approximately 195,408 sq.ft. Data Center. <MatterAgendaDate> 2026-01-13T00:00:00 </MatterAgendaDate> [...] <MatterBodyName> Design Review Board </MatterBodyName>

• A listing site says the originally proposed PH6 and PH7 were merged into this one building.

  • [3] Baxtel, NTT PH6 Data Center (read October 7, 2026): merging the originally proposed PH6 and PH7 facilities into a single, high-density building now known solely as PH6

• AZBEX reported on January 16, 2026 that Mesa's Design Review Board met on January 13 to discuss the aesthetics and landscape plans for the combined building and took no action, and that NTT Global Data Centers Americas is the owner, Corgan the design firm and Colliers Engineering & Design the engineer.

  • [5] AZBEX, 2 Data Center Projects Advancing in Metro Phoenix (January 16, 2026): Under the new proposal, the previously planned PH 6 and 7 buildings will now be combined into a single 195.4KSF building, reducing the total number of buildings on the site from seven to six. The Mesa Design Review Board met to discuss the aesthetics and landscape plans on Jan. 13. No action was taken. NTT Global Data Centers Americas is the owner. The design firm is Corgan. Colliers Engineering & Design is the engineer.

• Those two permits do not name PH6 or PH7, and no record cited here links them to an NTT PH name.

  • [6] City of Mesa, Building Permits (Commercial, Residential and Signs), permit PMT26-09976 (read November 13, 2026): Underground and foundation only. Under slab utilities, New unlimited area construction II-B, 188,093 SF data center. "status":"Fees Paid"
  • [7] City of Mesa, Building Permits (Commercial, Residential and Signs), permit PMT26-09201 (read November 13, 2026): Site Improvement Plans, grading and drainage, on-site pacing, storm drain, private water improvements, private sewer improvements, and landscaping.

• Maricopa County's air quality dataset lists a Clayco dust control record named "NTT PH6" and described as a data center.

  • [8] Maricopa County Air Quality Department, Facility F045927 record, ImpactFacility dataset (read November 13, 2026): "facility_nm":"NTT PH6" "name":"Clayco Inc" "facility_desc":"Data Center"

• NTT's Phoenix data centers page says "Our Phoenix campus features a planned capacity of 240MW" and that the campus is "set to deliver over 240MW of IT load when fully operational", figures for the whole campus rather than for PH6.

  • [9] NTT DATA, Phoenix data centers (November 13, 2026): Our Phoenix campus features a planned capacity of 240MW and offers expansion opportunities for clients of all sizes. Our Phoenix data center campus, set to deliver over 240MW of IT load when fully operational

• Maricopa County Air Quality lists facility F040194, "PH Data Center", at 10302 E Elliot Rd in Mesa as a "429 MW generating capacity data center." The record calls the figure generating capacity and does not say which buildings it covers.

  • [10] Maricopa County Air Quality Department, Impact Facility dataset, facility F040194 (November 13, 2026): "facility_nm":"PH Data Center" ... "address1":"10302 E Elliot Rd" ... "facility_desc":"429 MW generating capacity data center." ... "operating_status_dsc":"Operating"
  • [11] Maricopa County Air Quality Department, Facility F040194 records page (November 13, 2026): "OnBaseWebLink":"https://edms.maricopa.gov/aq/index.html?OBKey__3635_1=F040194"

• The PH6 preliminary site plan cover sheet filed with Mesa lists 6 buildings for the campus and gives building PH6 an area of 195,408 SF.

  • [12] City of Mesa (applicant site plan by Corgan), NTT Global Data Centers Americas - PH6, Preliminary Site Plan Cover Sheet (January 6, 2026): GROSS AREA = 102.14 AC ± NUMBER OF BUILDINGS = 6 BUILDING PH6 AREA = 195,408 SF

• ABC15 reported that NTT says construction on the Mesa campus will continue for at least another two years as it works toward completing all seven data centers planned for the property, a count that differs from the 6 buildings on the PH6 cover sheet, and that the finished campus will have a power capacity exceeding 200 megawatts.

  • [13] ABC15, Inside NTT's Mesa data center (read November 13, 2026): NTT's Mesa campus is still under development. The company says construction will continue for at least another two years as it works toward completing all seven data centers planned for the property. Once fully completed, NTT says its Mesa campus will have a power capacity exceeding 200 megawatts
  • [12] City of Mesa (applicant site plan by Corgan), NTT Global Data Centers Americas - PH6, Preliminary Site Plan Cover Sheet (January 6, 2026): GROSS AREA = 102.14 AC ± NUMBER OF BUILDINGS = 6 BUILDING PH6 AREA = 195,408 SF

Our own notes

These remarks are Arizona AI's own. They say how this record is counted or what we could not find, so there is no outside page to link.

Mesa's open data lists permit PMT26-09976 for a 188,093 SF data center, "Underground and foundation only," and civil permit PMT26-09201, both in the status "Fees Paid" with no issue date when read on November 13, 2026, with Chad Labucki named as contractor on the first.