Osaka commercial maintenance obligations | Legal Guide

In residential apartments, a landlord's duty to fix broken air conditioners and water heaters is absolute. However, in Osaka's high-stakes commercial sector—primarily governed by the Act on Land and Building Leases (effective 1 August 1992)—landlords push almost 100% of maintenance and repair costs onto corporate tenants via lease clauses and the "Kouji Demarcation" system.

Passing the Buck: B2B Cost Allocation

While Article 606 of the Civil Code states that "A lessor shall assume the obligation to effect repairs necessary for the use and profit of the leased thing," this is a dispositive provision (任意規定) in B2B leases. In a commercial environment, "Freedom of Contract" dictates that landlords can legally overwrite this rule, shifting interior maintenance burdens to the tenant.

Landlord Responsibility (The Building Core)

The landlord's financial and maintenance burden is strictly limited to the structural core (Kutai) and common facilities.

• The foundation, exterior walls, and roof waterproofing.
• Building-wide elevators, first-floor lobbies, main water pumps, and the primary electrical substation room.

Tenant's Responsibility (The Exclusive Leased Space)

A commercial lease's Special Clauses dictate that any maintenance, equipment replacement, or statutory safety inspections that occur inside the tenant's rented walls are exclusively paid for out of the tenant's pocket.

• All interior walls and networking cables.
• The massive commercial HVAC units servicing only their floor.
• Clogged plumbing inside their restaurant kitchen or office bathrooms.
• Even if the tenant moves into an "Inuki" (Turnkey) space and inherits an old air conditioner from a previous renter, the landlord claims complete immunity; if it breaks on day one, the new tenant must buy a $30,000 replacement themselves.

The Chaos Agent: "The Demarcation System" (A/B/C Kouji)

When a massive corporation moves into an Osaka skyscraper, they must spend hundreds of millions to build out their office. The greatest battleground is Japan's "Kouji Demarcation" (Kouji Kubun) system. In Osaka B2B leases, this is a contractual framework, not a statutory one, enforced through the principle of Freedom of Contract.

1. A-Kouji (A-Work):

• Cost Burden: Landlord
• Contractor: Landlord's Designated Mega-Construction Firm (Zenekon)
• Repairs to the building's core exterior, elevators, or shared lobbies. The tenant does not pay for this.

2. B-Kouji (B-Work): 【The Ultimate Flashpoint】

• Cost Burden: Tenant (Out of Pocket)
• Contractor: Landlord's Designated Mega-Construction Firm (Exclusively)
• This involves work inside the tenant's space that interconnects with building-wide systems (fire sprinklers, central HVAC ducts).
• The Conflict: The landlord forces the tenant to use the landlord's designated contractor for safety reasons. The tenant often cannot seek competitive quotes, and costs may significantly exceed market rates.

3. C-Kouji (C-Work):

• Cost Burden: Tenant (Out of Pocket)
• Contractor: Any Contractor the Tenant Chooses
• Cosmetic work: carpets, painting, or custom lighting.

2020 Civil Code: The B2B "Self-Repair" Right

The 2020 Civil Code revision clarified the power dynamic regarding essential repairs. Under Article 607-2, a tenant may perform repairs themselves if they notify the lessor and the lessor fails to act within a reasonable time, or if there are urgent circumstances.

The Multi-Million Yen Risk

Imagine an office ceiling (a structural A-Kouji component) springs a massive leak, threatening the tenant's $5 million server racks. If the landlord fails to act after notification, the tenant can hire a contractor themselves for emergency repairs.

The Financial Impact (Articles 608 & 611):

1. Reimbursement vs. Offset: Under Article 608, the tenant may demand immediate reimbursement for necessary expenses. However, standard Osaka commercial leases include "Non-Set-Off" clauses (相殺禁止条項). These are legally enforceable and prevent the tenant from unilaterally enacting an offset (Sausai) to deduct repair costs from their rent payments.
2. Proportional Rent Reduction: Per Article 611, if part of the leased object becomes unavailable, the rent is automatically reduced in proportion to the unusable part. Crucially, the tenant cannot withhold 100% of the rent for a partial loss. Doing so violates the "Destruction of Trust" doctrine (信頼関係の破壊の法理), which is a material breach that justifies lease termination.

Landager utilizes high-priority A/B/C Kouji legal tags on all corporate ticketing. Any ticket flagged as "A-Kouji" (Landlord liability) involving critical infrastructure instantly bypasses standard queues and triggers SLAs with mega-contractors. This establishes a legally auditable timestamp of "rapid landlord response," protecting landlords against the Civil Code's "Self-Repair" claims and ensuring that any "Proportional Rent Reduction" under Article 611 is handled according to strict legal limits rather than unilateral rent withholding.

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