Protecting Lives Through Reliable Fire Safety

Oi Group Co., Ltd. is a professional fire protection company based in Japan, specializing in fire protection systems, fire equipment inspections, maintenance, emergency repairs, and regulatory compliance.

We support hotels, hospitals, nursing homes, factories, commercial facilities, office buildings, warehouses, educational institutions, and many other types of buildings throughout Japan.

Fire safety is not simply about complying with regulations. It is about protecting people, safeguarding businesses, and ensuring that life-saving equipment operates correctly when it is needed most.

Our mission is simple.

Connecting the Light of Life.
Protecting lives through reliable fire safety.

Fire Safety Compliance in Japan

Japan has one of the most advanced and comprehensive fire protection systems in the world. Building owners and facility managers are required to comply with strict regulations under the Japanese Fire Service Act.

Depending on the building type and occupancy, legal requirements may include:

• Periodic fire equipment inspections
• Maintenance of automatic fire alarm systems
• Sprinkler system inspections
• Emergency lighting inspections
• Fire extinguisher maintenance
• Fire department reporting
• Emergency evacuation planning
• Fire prevention management

Failure to maintain fire protection systems may result in administrative guidance, legal issues, insurance concerns, or increased risks to occupants.

Our Services

• Fire Protection System Inspection
• Fire Alarm System Maintenance
• Sprinkler System Repair
• Fire Extinguisher Inspection
• Emergency Lighting Inspection
• Fire Protection Equipment Installation
• Electrical Work Related to Fire Protection Systems
• Emergency Fire Protection Repairs
• Support During Fire Department Inspections
• Fire Safety Consulting
• Business Continuity Planning (BCP)

Industries We Support

Our clients include:

• Hotels
• Hospitals
• Nursing Homes
• Factories
• Warehouses
• Shopping Centers
• Office Buildings
• Schools and Universities
• Apartment Buildings
• Public Facilities

Why Choose Oi Group?

Unlike companies that only perform routine inspections, Oi Group provides complete support from inspection and diagnosis to repair, renovation, emergency response, and regulatory compliance.

We believe that fire protection equipment only has value when it works correctly during an emergency. Every inspection is performed with attention to detail, responsibility, and respect for human life.

Our experienced engineers work closely with building owners, facility managers, and overseas companies operating in Japan to provide practical, reliable, and professional fire protection solutions.

Supporting Overseas Companies Operating in Japan

Many overseas companies invest in hotels, offices, factories, commercial buildings, and residential facilities across Japan.

Japanese fire safety regulations can be difficult to understand without local expertise. Oi Group helps international businesses remain compliant while maintaining the highest level of safety.

Whether you need periodic inspections, emergency repairs, fire department support, or advice regarding Japanese fire regulations, our specialists are ready to assist.

Contact Oi Group

If your organization owns or manages buildings in Japan and requires professional fire protection services, please contact Oi Group.

We are committed to protecting lives, supporting businesses, and delivering reliable fire safety solutions throughout Japan.

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海外企業・外国人オーナー様へ

株式会社大井ぐるーぷは、日本国内のホテル・病院・介護施設・工場・商業施設・オフィスビルなどを対象に、消防設備点検、消防設備工事、防火管理支援、消防署対応、緊急修繕までワンストップで対応しています。

日本の消防法への適切な対応は、人命を守るだけでなく、建物の安全性、事業継続、企業の社会的信頼にも直結します。

海外企業様や外国人オーナー様が、日本国内で安心して施設運営を行えるよう、私たちは専門知識と豊富な経験をもってサポートいたします。

Protecting Lives Through Reliable Fire Safety.
株式会社大井ぐるーぷは、日本の消防設備・防災のプロフェッショナルとして、安全で安心できる社会づくりに貢献してまいります。