Hamburg Commercial Maintenance Obligations: Shell-and-Core to Triple Net

In the residential sector, Hamburg landlords bear a nearly non-delegable duty to keep the property habitable. The commercial sector is the opposite: provided clauses are properly drafted and sufficiently specific, commercial leases in Hamburg can transfer most maintenance and repair obligations to the tenant. This flexibility is one of the key reasons Hamburg's commercial real estate market is attractive to institutional investors.

Disclaimer: This guide provides general legal information for educational purposes only and does not constitute legal advice. Maintenance allocation disputes are among the most expensive in commercial tenancy litigation. Always have your lease clauses professionally reviewed. Information last verified: March 2026.

The Default Legal Position

The starting point under § 535 BGB remains: the landlord must deliver the property fit for use and maintain it in that condition. In the commercial context, this can be comprehensively re-allocated by contract.

"Dach und Fach" — The Hamburg Standard Allocation

The most common maintenance distribution clause in Hamburg commercial leases divides obligations along the following lines:

Landlord retains ("Dach und Fach"):

• Structural elements: load-bearing walls, foundations, roof (waterproofing and structural integrity)
• Exterior envelope: façade, exterior windows (structural glazing), building services shared with other tenants

Tenant takes ("alles andere" / everything else):

• Internal partitions, doors, ceilings, and floor coverings
• Internal HVAC equipment (air conditioning units, fan coil units serving only the demised space)
• Internal plumbing and electrical fittings
• Tenant's own signage and equipment
• Decoration in all forms

Critical drafting issue: The Dach und Fach allocation must not include pre-existing building defects (Anfangsmängel). If the building's roof leaked before the lease started, that is the landlord's obligation regardless of the clause — courts consistently strike down attempts to make tenants responsible for pre-existing defects.

Triple-Net Leases (Dreifach-Netto-Mietvertrag)

Common for single-tenant assets (logistics centers, retail parks, stand-alone retail buildings) in Hamburg's suburban and industrial zones. The tenant takes on three layers beyond standard rent:

1. Maintenance and repair of the entire property interior and exterior (beyond structural only)
2. Insurance premiums for the building
3. Real estate taxes (Grundsteuer) — passed directly to the tenant

The landlord receives the net rent unchanged, functioning purely as a capital provider. Any tax changes or insurance premium increases flow directly to the tenant's cost base.

German law compatibility: True triple-net structures must be carefully drafted to comply with § 307 BGB (prohibition of unfair standard-form clauses). Key requirements:

• The clause must identify all costs clearly and specifically — a catch-all "all costs" transfer is routinely void
• Must not include costs for the structural renewal of major components (e.g., complete roof replacement) in standard-form contracts — such clauses are typically void; they only work as individually negotiated agreements (Individualvereinbarungen) separately documented
• Annual cost caps for CAM charges in multi-tenant buildings (see below)

Common Area Maintenance (CAM) Charges

In Hamburg multi-tenant buildings (shopping centers, office complexes), costs of maintaining shared areas — lobbies, lifts, car parks, green spaces — are allocated to tenants through CAM charges:

• Allocation basis: Usually based on each tenant's share of the total lettable area relative to the building total.
• Annual reconciliation: CAM is typically invoiced as a monthly advance with an annual actual-cost settlement.
• Cap requirement: Under § 307 BGB, standard-form CAM clauses must include an absolute annual cap on the tenant's exposure (e.g., "not to exceed 8% of annual net rent"). Uncapped CAM clauses in AGB-form leases are void.
• Audit rights: Tenants are entitled to review and audit CAM cost breakdowns; documented CAM statements are legally required.

Practical Guidance for Hamburg Commercial Landlords

Landager helps Hamburg commercial landlords track CAM reconciliation timelines, building maintenance budgets, and warranty periods on major equipment replacements.

Back to Hamburg Commercial Property Law Overview.