Mitsui Fudosan Hino Hinodai Data Center Site (former Hino Motors west plant)

Name: Mitsui Fudosan Hino Hinodai Data Center Site (former Hino Motors west plant)
Address: JP

Announced

Japan · 1 project · Last reported 2026-08-27

Summary

Hino City Council's list of general questions notified for its third regular session of 2026 (updated 27 August 2026) names the plan twice: a question calling for 'Mitsui Fudosan's Hino-dai data-centre construction' to be frozen and assessed, set for 5 October, and one opposing 'the start of the Hino-dai data centre's site-grading works in October', set for 7 October. On 29 September 2026 the council rejected a petition asking for the start of a data centre's construction to be postponed. The plan, identified by Hino City and its proponent Mitsui Fudosan as the (仮称)日野市日野台3丁目計画, is a three-building data-centre development on the 114,037.24 m2 former Hino Motors west plant at 日野台3丁目1番32-34 (part) and 日野台4丁目31番1, 2, 5. The council record supports announced status as of 27 August 2026. No building confirmation, start of site works or later stage is recorded; the October 2026 grading start is a planned date, and the published floor area and power figures are plans, not capacity in service. evidence

Hino City Council (日野市議会) · published 2026-08-27

Location

The interactive map needs JavaScript. Display anchor: 35.67337, 139.37703 (Point locator, WGS 84).

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Campus reference; individual project footprints are not mapped.

Projects (1)

Mitsui Fudosan (仮称)日野市日野台3丁目計画 — planned three-building data-centre development, Hino

Announced last observed as of 2026-08-27 · Project announcement

Results table of the third regular session of 2026. It records that petition 請願第8－7号, '重要な環境データも安全対策も示されないデータセンターの工事着工の延期を求める請願' (asking for the start of construction of a data centre, for which key environmental data and safety measures had not been shown, to be postponed), was rejected (不採択) on 29 September 2026, with the votes of each council group. The petition title does not name the plan; in Hino the only data-centre plan in council and city records is the Mitsui Fudosan Hino-dai plan, whose site-grading start in October 2026 is the subject of the notified general questions. evidence

Hino City Council (日野市議会) · published 2026-09-30

Planned schedule of the third regular session of 2026: announcement day 25 August 2026 (petitions submitted by noon that day are considered); opening, petitions tabled and bills introduced on 1 September; standing committees 3 to 7 September; settlement committee 9 to 24 September; committee reports and votes on 29 September; general questions on 1, 2 and 5 to 7 October 2026; closing business on 7 October. evidence

Hino City Council (日野市議会) · published 2026-07-01

The Environmental Council page lists the first FY2026 meeting on 9 July 2026, whose deliberation item was 日野台データセンター計画の環境に関する情報について, and links its agenda, summary record and the developer's Material 1 for the (仮称)日野市日野台3丁目計画. No later FY2026 meeting is listed. evidence

Hino City · published 2026-08-05

Mitsui Fudosan's development-plan release sets a target of more than JPY 600 billion cumulative data-centre investment by 2035, says new data-centre properties will be developed in the Kansai Hokusetsu and Kanto Tama areas and that the company plans and develops them itself, and, on page 6, names the （仮称）日野市日野台3丁目計画 among its data-centre developments, with a park of about 6,900 m2 planned on the north side of the site. evidence

Mitsui Fudosan Co., Ltd. · published 2026-07-23

Companies

Owner: Mitsui Fudosan Co., Ltd. (current) evidence

Source and location review

Status source

Hino City Council: 令和8年第3回定例会一般質問通告一覧表 (notified general questions, third regular session 2026) evidence row
Hino City Council (日野市議会) · published 2026-08-27 · Government record

Locator

Campus locator · Compiled location reference · developer_site_plan_outline_georeferenced_to_gsi_parent_property 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: 61 days before the data update on 2026-10-27

Location details

Coordinates: 35.67337, 139.37703
Geometry licence: all-rights-reserved
Use scope: Campus locator
Scope class: developer_site_plan_outline_georeferenced_to_gsi_parent_property
Authority: Compiled location reference
Source entity: Campus
Method: developer_site_plan_page8_six_point_similarity_to_gsi_z18_std_pole_of_inaccessibility_epsg6677
Derivation: georeferenced_source_map
Precision scope: Parent-property marker inside the 114,037 m2 development site (former Hino Motors west plant) outlined on the developer's page-8 site plan and registered to GSI z18 tiles; it is the outline's pole of inaccessibility, about 124 m inside the boundary. It does not locate any of the three planned buildings, the data halls, a substation, an entrance or a surveyed lot boundary.
Horizontal uncertainty: Not reported
The source is a 0.66 m-per-pixel developer site plan without geodetic control, traced by hand and registered to the GSI standard map; control residuals (RMS 1.6 m, independent south-west-corner check 5.4 m) measure registration consistency, not ground accuracy, and GSI standard-map accuracy is not stated. The marker is chosen for its clearance inside a site that extends a few hundred metres in each direction; decimal places are arithmetic precision.
Geometry evidence: 8d5dcf11

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 Mitsui Fudosan Hino Hinodai Data Center Site (former Hino Motors west plant)
Title	Publisher	Roles	Published	Retrieved	Licence	Attribution	Content hash (SHA-256)
Hino City Council: 令和8年第3回定例会一般質問通告一覧表 (notified general questions, third regular session 2026) Archived copy	Hino City Council (日野市議会) Government record	Project announcement	2026-08-27	2026-10-27	all-rights-reserved	Hino City Council	`40ac619f6cea358ab9d46becba6d42b82b7655e3648ffca0146a585fdd3bd222` Retained source material; see source provenance
Hino City Council: 令和8年第3回定例会議案等審議結果一覧表 (results of bills and petitions, third regular session 2026) Archived copy	Hino City Council (日野市議会) Government record	Site and project identity	2026-09-30	2026-10-27	all-rights-reserved	Hino City Council	`cc6f9dfe09dcbd477e5066ad8db46a7deed6ee076bddae21ac903d398008ebb1` Retained source material; see source provenance
Hino City Council: 令和8年第3回日野市議会定例会日程 (third regular session 2026 schedule) Archived copy	Hino City Council (日野市議会) Government record	Site and project identity	2026-07-01	2026-10-27	all-rights-reserved	Hino City Council	`af7699d06922d0482cf47f88738a9a8a50319b75fc000995a5d87820d060b481` Retained source material; see source provenance
Hino City Environmental Council FY2025 3rd meeting material: データセンターの開発概要 (data-centre development overview; landowner Mitsui Fudosan) Archived copy	Hino City Government record	Owner claim	not stated	2026-10-27	all-rights-reserved	Hino City	`6e87b2f0cfcb9c989200442cc02f3d2a0cbe63e38f74771be1f1cd3b87b48329` Retained source material; see source provenance
Hino City Environmental Council, FY2026 1st meeting (9 July 2026), Material 1: (仮称)日野市日野台3丁目計画環境保全に向けた取組み概要 (developer: Mitsui Fudosan) Archived copy	Hino City (material prepared by Mitsui Fudosan Co., Ltd.) Government record	Site and project identity, Geometry	not stated	2026-10-27	all-rights-reserved	Hino City; Mitsui Fudosan Co., Ltd.	`96176bfcbe0ad3e065705562c2bad689e537ca740ebd3deaa014d94930ffbce8` Retained source material; see source provenance
Hino City: 令和8年度日野市環境審議会 (FY2026 Environmental Council page) Archived copy	Hino City Government record	Site and project identity	2026-08-05	2026-10-27	all-rights-reserved	Hino City	`6b151dc42462f204ab87bbba02320ece3f1daacc49fc7fc204a718d8954ece07` Retained source material; see source provenance
Mitsui Fudosan news release (23 July 2026): MFLP/MFIP FY2026 development plan, including data-centre development and the (仮称)日野市日野台3丁目計画 Archived copy	Mitsui Fudosan Co., Ltd. Company disclosure	Site and project identity	2026-07-23	2026-10-27	all-rights-reserved	Mitsui Fudosan Co., Ltd.	`0ab4be82f0f548dd7dc10d0c6e5ee7a3385843ba27c007974f37ca581ed2c1f1` Retained source material; see source provenance

Cite this site

Kyars, K. (2026). Mitsui Fudosan Hino Hinodai Data Center Site (former Hino Motors west plant) [site vcc-site-625b2485ed0779af5392]. In Data Center Atlas (2026-10-27) [Data set]. https://kiankyars.github.io/datacenter-atlas/sites/vcc-site-625b2485ed0779af5392/

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