01
Cleaning & building maintenance
Routine and scheduled cleaning, window, air-conditioning and water tank cleaning, building systems maintenance, repairs and renovation.
Company & Services
Explore our services, company history and brochure.
OUR SERVICES
Our services
02
Interior materials
Wholesale and retail supply of wallcoverings, flooring, curtains and blinds for homes and workplaces.
03
Municipal housing management
Management and operation of municipal housing in Hirosaki. Please contact us for the current scope of our responsibilities.
BUILDING MAINTENANCE
Building maintenance services
From everyday cleaning to specialist cleaning and building systems maintenance, tell us about your property and the support you need.
01
Routine & scheduled cleaning
Cleaning of floors and shared areas, periodic cleaning and window cleaning. We discuss the areas to be covered and how often work is needed.
02
Vacant properties & specialist cleaning
Cleaning for vacant homes and apartments, restoration work, air-conditioning units and water tanks. Scope and site conditions are discussed individually.
03
Building systems maintenance
Maintenance services for electrical, air-conditioning, water supply, drainage and fire safety systems. Service scope depends on the building and the work required.
ABOUT SANKO
Company overview
Based in Hirosaki, Aomori Prefecture, SANKO provides building maintenance services and supplies interior materials. We support the spaces where people live and work.
Company
SANKO Inc. (三幸株式会社)
Representative
三枝壮平, Representative Director
Founded
1919
Incorporated
February 1, 1965
Employees
201, including 149 part-time staff
As of June 30, 2026
Head office
4-5-11 Joto, Hirosaki, Aomori 036-8095, Japan
Other offices: Hachinohe, Aomori, Goshogawara and Hakodate. Please contact us to confirm service availability for your location.
Company history
1919: 三枝商店 founded.
February 1965: Sanko established as a limited company.
December 1992: Reorganised as SANKO Inc.
June 2012: Merged with 株式会社三枝商店 and 株式会社サンプラン
Company brochure
Company profile (PDF, Japanese)4 pages, Japanese.