Company

会社案内

About K.B.K

Since our founding in 2013, K.B.K has grown as a specialist in waterproofing and major renovation, operating across Kansai and Kanto.

Company Overview

Company Profile

Company Name K.B.K Co., Ltd.
President & CEO Shinya Komai
Founded Founded in 2013 as Komai Waterproofing Industries / Incorporated May 2019
Business Waterproofing / Exterior Repair / Interior Works / Major Renovation
License Osaka Gov. License (General-7) No.152049
Head Office 6-1-44 Nishiawaji, Higashiyodogawa-ku, Osaka 533-0031
Tokyo Office 1-9-7 Kitashinagawa, Shinagawa-ku, Tokyo 140-0001
TEL / FAX 06-6326-6222 / 06-6326-6223
Legal Counsel 弁護士法人 咲くやこの花法律事務所
Service Area Kansai & Kanto — nationwide coverage available
Rakuten K.B.K Shop Currently in preparation / https://www.rakuten.co.jp/kbk-shop/
Projects Completed 1,000+ projects (as of 2025)
Service Area

Two-Office Coverage

Kansai / 関西
Kansai Region
  • Osaka Prefecture (all areas)
  • Hyogo Prefecture
  • Kyoto Prefecture
  • Shiga, Nara, Wakayama
Kanto / 関東
Kanto Region
  • Tokyo Metropolis (all areas)
  • Kanagawa Prefecture
  • Saitama & Chiba
  • Other Kanto areas

* Coverage outside the above areas may be available. Please feel free to enquire.

Licenses & Qualifications

Certifications & Permits

建設業許可
Construction Business License
Osaka Gov. License (General-7) No.152049
Covers waterproofing, painting, and interior finishing works under Osaka Governor's license.
国家資格
Grade 1 Construction Management Engineer
1st Class Licensed
Nationally licensed specialist managing schedule, quality, and safety for major renovation and general construction works.
国家資格
Grade 1 Waterproofing Technician
1st Class Licensed
Top-level national certification for waterproofing. Specialists proficient in urethane, sheet, and asphalt waterproofing systems.
国家資格
Various Grade 1 Specialists
Multiple Certifications
Qualified specialists across related disciplines including painting, plastering, and tile work to support comprehensive renovation.
Access

Our Offices

Head Office
Osaka HQ
6-1-44 Nishiawaji,
Higashiyodogawa-ku, Osaka 533-0031

TEL: 06-6326-6222
FAX: 06-6326-6223
Tokyo Office
Tokyo Branch
1-9-7 Kitashinagawa,
Shinagawa-ku, Tokyo 140-0001

TEL: 06-6326-6222

Accessible from JR Shinagawa Station
Contact

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