Japan · Procurement Portal award records · Supplier record

Yamaken Building Tech Service Co., Ltd.

ヤマケンビルテックサービス株式会社

Line: Heavy construction services (UNSPSC 72140000)Register loaded to September 2026Compiled 12 October 2026

Yamaken Building Tech Service Co., Ltd. — Japan · Procurement Portal award records · Supplier record: 53 award notices, all years (Feb 2019 – Sep 2026); 17 since January 2024 (3 buyers); 5th rank in the line (of 293 suppliers · 1.7%); 9 buyers never served (163 notices in the line from them).

Assay record ASY-JP-1WP1DSQ18W · Cite as: Assay Systems, “Yamaken Building Tech Service Co., Ltd. in the Procurement Portal register for Japan”, https://assay-systems.com/register/jp/yamaken-building-tech-service-co-ltd/

53
award notices, all years
Feb 2019 – Sep 2026
17
since January 2024
3 buyers
5th
rank in the line
of 293 suppliers · 1.7%
9
buyers never served
163 notices in the line from them

Own record by year

award notices, 2014 onward
8
7
5
7
9
5
6
6
2014201520162017201820192020202120222023202420252026

Who buys from Yamaken Building Tech Service Co., Ltd.

since January 2024
3buyers
17notices
88%top buyer
Ministry of Land, Infrastructure, Transport and Tourism88.2%
15 notices
National Tax Agency5.9%
1 notice
Ministry of Health, Labour and Welfare5.9%
1 notice

2 buyers named Yamaken Building Tech Service Co., Ltd. before 2024 only.

The line

since January 2024
599award notices
13buyers
293suppliers
19.5%held by top ten

Heavy construction services (UNSPSC 72140000)

242
191
166
202420252026Jan–Sep
5thof 293 suppliers
10notices name Yamaken Building Tech Service Co., Ltd.
1.7%share of the line
2.4%of 410 notices from Ministry of Land, Infrastructure, Transport and Tourism
55new suppliers since 2024

Buyers that buy the line and never named Yamaken Building Tech Service Co., Ltd.

since April 2014
9buyers
163notices since 2024
7buyers took a new supplier
58suppliers came in that way
Japan Coast Guard
73 notices
Ministry of Finance
46 notices
Ministry of the Environment
18 notices
Japan Meteorological Agency
13 notices
Ministry of Justice
9 notices
Fisheries Agency
1 notice
Imperial Household Agency
1 notice
Ministry of Foreign Affairs
1 notice
Public Prosecutors Office
1 notice

Suppliers next to it in the line

since January 2024
Kowan Kuko Sogogijutsu Center1 buyer
11 notices
Shinyo Denki Co., Ltd.1 buyer
10 notices
Taiki Co., Ltd., Okinawa1 buyer
10 notices
Yamaken Building Tech Service Co., Ltd.
10 notices

All 293 suppliers in the line

The extract

Every buyer, every supplier, award date, notice number and value where one is disclosed, behind the figures above.

Request extract

Source: successful bid records (open data) for Japan in the Procurement Portal of the Government of Japan, Digital Agency, p-portal.go.jp, which permits reuse including commercial use under its terms of use; awards from April 2014 to 30 September 2026, accessed 12 October 2026.Assay Systems has changed the data.