Colt Inzai Data Centre 4 / Keppel DC REIT Tokyo Data Centre 3 (Otsuka 2-chome, Inzai)

Name: Colt Inzai Data Centre 4 / Keppel DC REIT Tokyo Data Centre 3 (Otsuka 2-chome, Inzai)
Address: JP

Operational

Japan · 1 project · Last reported 2026-09-30

Summary

Keppel DC REIT's 3Q 2026 update, published 23 October 2026, lists Tokyo Data Centre 3 in Inzai City in its portfolio overview as at 30 September 2026 with one client and 100.0% occupancy under a fully-fitted single-tenant lease, for which the owner bears all expenses and is responsible for facilities management, a 14.0-year WALE and a 2025 completion year. The REIT's Annual Report 2025 places it at 8 Otsuka 2-chome and names Colt Data Centre Services Japan Operating GK as its facility manager; it is the building Colt opened as Colt Inzai Data Centre 4 on 26 February 2025 (first phase of 4.8 MW then in operation, 20 MW planned at completion). 30 September 2026 is the reporting date, not an opening date. Occupancy is by lettable area; no IT load in use is published. evidence

Keppel DC REIT Management Pte. Ltd. · published 2026-10-23

Location

The interactive map needs JavaScript. Display anchor: 35.80860, 140.12226 (Point locator, WGS 84).

View location: OpenStreetMap · Google Maps · Bing aerial · Copernicus Browser

Site locator; building footprints are not mapped.

Projects (1)

Colt Inzai Data Centre 4 (Keppel Tokyo Data Centre 3) — existing hyperscale data-centre operations

Operational last observed as of 2026-09-30 · Authoritative status update

Keppel DC REIT's Annual Report 2025. The portfolio table (PDF page 42, printed page 45) gives Tokyo Data Centre 3's location as 8 Otsuka 2-Chome, Inzai City, Chiba Prefecture, Japan; freehold title; 98.47% ownership interest; land area 94,157 sq ft; gross floor area 195,216 sq ft; attributable lettable area 73,325 sq ft; one client; fully-fitted (single tenant) lease; facility manager Colt Data Centre Services Japan Operating GK; occupancy 100%; purchase price JPY 80,843.9 million. PDF page 11 repeats the facility manager (FM: Colt Data Centre Services Japan Operating GK). PDF page 36 records the acquisition of Tokyo DC 3 for JPY 82.1 billion from Sunrise Inzai 4 TMK and describes it as a newly built, freehold, fully-fitted (single tenant), Tier III-equivalent facility in Inzai City, Greater Tokyo; the acquisition of the 98.47% effective interest completed in November 2025. evidence

Keppel DC REIT Management Pte. Ltd. · published 2026-04-07

Colt DCS's Japanese release (posted 26 February 2025) announcing that it has opened Colt Inzai Data Centre 4, its fourth site in Inzai City, Chiba, as the second site of its joint venture with Mitsui & Co. and Fidelity Investments. It says the first development phase is complete with 4.8 MW in operation, capacity will reach 20 MW at completion, the facility is already 100% contracted, and Colt's four Inzai data centres will total 70 MW. It gives no street address. evidence

Colt Data Centre Services · published 2025-02-26

Colt DCS's Japanese release of 25 April 2023 announcing the start of construction of its fourth major data centre in Inzai City, Chiba (Inzai 4). It states a site area of 8,747 m2 (敷地面積は 8,747 平方メートル), about 20 MW of power capacity, already 100% reserved, a location about 600 m from Colt's existing Inzai campus and close to Chiba New Town station, and first-phase completion expected by the end of 2024. evidence

Colt Data Centre Services · published 2023-04-25

Colt's Japanese data sheet for Colt Inzai Data Centre 4 in Chiba New Town: steel and CFT structure, base-isolated, five storeys above ground plus two penthouse levels; site area 8,747 m2; 20 MW IT power; N+1 gas-turbine emergency generators with 48 hours of fuel; annual average PUE 1.36. It gives no street address. evidence

Colt Data Centre Services · publication date not stated

Keppel DC REIT's portfolio page describes Tokyo Data Centre 3 as a hyperscale data centre in Inzai City, Greater Tokyo: a freehold, purpose-built, five-storey property completed in 2025, built to Tier III-equivalent specifications with a base isolation system. evidence

Keppel DC REIT Management Pte. Ltd. · publication date not stated

Companies

Owner: Keppel DC REIT (current) evidence
Operator: Colt Data Centre Services Japan Operating GK (Colt DCS) (current) evidence

Source and location review

Status source

Keppel DC REIT 3Q 2026 Operational Updates (portfolio overview as at 30 September 2026) evidence row
Keppel DC REIT Management Pte. Ltd. · published 2026-10-23 · Company disclosure

Locator

Reviewed site locator · Compiled location reference · official_registry_map_facility_parcel_centroid evidence

Source checks

Not reviewed against imagery not_reviewed
No imagery review is recorded for this project. Its status rests only on the dated authoritative source. · no independent imagery verification

Status age at review: 27 days before the data update on 2026-10-27

Location details

Coordinates: 35.80860, 140.12226
Geometry licence: CC-BY
Use scope: Reviewed site locator
Scope class: official_registry_map_facility_parcel_centroid
Authority: Compiled location reference
Source entity: Campus
Method: moj_aigid_exact_address_lot_planar_centroid_verified_inside
Derivation: direct_geometry
Precision scope: Planar centroid of MOJ registry-map lot 大塚二丁目8 (Inzai City), the single 8,736 m2 parcel at Keppel's stated address for Tokyo Data Centre 3 and the 8,747 m2 site of Colt Inzai Data Centre 4. It locates the data-centre property, 45 m inside its boundary; it is not the building outline, an entrance, a data hall or a surveyed point.
Horizontal uncertainty: Not reported
Registry-map accuracy class 甲二 from survey results; no parcel-specific numeric accuracy is published. The point is a parcel centroid and the property extends roughly 45-75 m from it; the building position within the lot is not measured. Seven decimals describe calculation, not survey accuracy.
Geometry evidence: b0729e45

A locator places the site on the map. It is not a building footprint, a construction extent or a surveyed boundary unless the use scope is an official boundary, and even then it is a parcel or permit boundary.

Evidence

Sources are linked, not redistributed; each keeps its own terms. An archived copy is a lookup for the Wayback Machine capture nearest the retrieval date and may be unavailable or differ from what was reviewed. Each hash states what it covers; imported factual records are not publisher-page captures.

Evidence for Colt Inzai Data Centre 4 / Keppel DC REIT Tokyo Data Centre 3 (Otsuka 2-chome, Inzai)
Title	Publisher	Roles	Published	Retrieved	Licence	Attribution	Content hash (SHA-256)
Colt 印西データセンター4 データセンターの仕様 (Tokyo Inzai 4 data sheet, Japanese) Archived copy	Colt Data Centre Services Company disclosure	Site and project identity	not stated	2026-10-26	all-rights-reserved	Colt Data Centre Services	`3a6c29c08c80e40e7fe30f286802811362b7834805d174aa922fb797cb1139b6` Retained source material; see source provenance
Coltデータセンターサービス、「Colt印西データセンター4」を開設 Archived copy	Colt Data Centre Services Company disclosure	Site and project identity	2025-02-26	2026-10-26	all-rights-reserved	Colt Data Centre Services	`76a9490c07560139000ed3019da65d148cbe14fd738225b33556460763f42442` Retained source material; see source provenance
Coltデータセンターサービス、印西4のデータセンターローンチを発表 Archived copy	Colt Data Centre Services Company disclosure	Site and project identity	2023-04-25	2026-10-26	all-rights-reserved	Colt Data Centre Services	`aaba82b83dd483ed6e2b46f88e34a9937d1f5b0b0d9976db1d9bf0e7fe69264f` Retained source material; see source provenance
GSI address search: 千葉県印西市大塚二丁目8 Archived copy	Geospatial Information Authority of Japan Map feature	Site and project identity	not stated	2026-10-26	GSI content terms (attribution required)	Geospatial Information Authority of Japan	`b6830a66cc354ec740ab7ba0230d1dd662f3a71cdeb7bd62ccbe6f71a1a3b951` Retained source material; see source provenance
Keppel DC REIT 3Q 2026 Operational Updates (portfolio overview as at 30 September 2026) Archived copy	Keppel DC REIT Management Pte. Ltd. Company disclosure	Physical status, Operator claim, Owner claim	2026-10-23	2026-10-26	all-rights-reserved	Keppel DC REIT Management Pte. Ltd.	`7904bd8a49f00c14b3b79e297df2ae0ef1ff5b20cea03a3ce24bed824df205d5` Retained source material; see source provenance
Keppel DC REIT Annual Report 2025: Portfolio Review at a glance (property locations) Archived copy	Keppel DC REIT Management Pte. Ltd. Company disclosure	Site and project identity, Operator claim	2026-04-07	2026-10-26	all-rights-reserved	Keppel DC REIT Management Pte. Ltd.	`445a8e655891d458559a6f4d91e6d3c9828d58c7d83ef9050468608fcd6ec7e3` Retained source material; see source provenance
MOJ / AIGID 2026 Inzai cadastral geometry: 原一丁目2-1 (BIG HOP parent parcel) Archived copy	AIGID; source registry map data by Japan Ministry of Justice Map feature	Geometry	not stated	2026-10-22	CC-BY	Japan Ministry of Justice registry map data; AIGID GeoJSON conversion. Catalog license: Creative Commons Attribution.	`c2bfc49a5ab84b0cc23f5664a70da73a4c4a384cc6f3218f50270fa3121e7f67` Retained source material; see source provenance
Tokyo Data Centre 3 \| Keppel DC REIT Archived copy	Keppel DC REIT Management Pte. Ltd. Company disclosure	Site and project identity	not stated	2026-10-26	all-rights-reserved	Keppel DC REIT Management Pte. Ltd.	`b3bad02f3a1cf40d5120fe8be7d74a3f48a8e071cedb489e5f47ff49896619bb` Retained source material; see source provenance

Cite this site

Kyars, K. (2026). Colt Inzai Data Centre 4 / Keppel DC REIT Tokyo Data Centre 3 (Otsuka 2-chome, Inzai) [site vcc-site-9cb7fd51b4bce6de63d8]. In Data Center Atlas (2026-10-27) [Data set]. https://kiankyars.github.io/datacenter-atlas/sites/vcc-site-9cb7fd51b4bce6de63d8/

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