Commercial Rent Increases in Hesse: Index, Graduated, and Turnover Rent

Unlike the strictly regulated residential market, commercial rent increases in Hesse are subject to no statutory caps. Neither the rent brake nor the rent increase cap applies to commercial space. However, landlords must contractually define adjustment mechanisms — without one, rent remains fixed for the entire term.

Disclaimer: This guide provides general legal information for educational purposes only and does not constitute legal advice. Commercial leases require legal review. Information last verified: March 2026.

Rent Adjustment Models

1. Index-Linked Rent (Indexmiete)

The most common model for long-term commercial leases in Hesse:

• Rent is linked to the Consumer Price Index (CPI) published by the Federal Statistical Office
• Adjustments no sooner than every 12 months
• The adjustment must be communicated in text form (letter or email) with the new index value
• Typically effective from the second month after notification

Key Contract Points

• Base index: Which CPI value serves as the starting point
• Threshold: Minimum index change before adjustment applies (e.g., 5%)
• Direction: Both ways (increase and decrease) or one-way only
• Automatic vs. declaratory: Does the adjustment happen automatically or require notification?

2. Graduated Rent (Staffelmiete)

Pre-agreed rent increases fixed at lease signing:

• Each increase must be stated as a specific euro amount (percentages alone are insufficient)
• Minimum 12 months between graduation steps
• Provides certainty for both parties
• Unlike residential, graduated rent can be combined with other mechanisms (e.g., index adjustment after graduation period)

Example

• Years 1–3: €15.00/m²
• Years 4–5: €16.50/m²
• Years 6–10: €18.00/m²

3. Turnover Rent (Umsatzmiete)

Common in retail and hospitality in Hesse:

• Consists of a base rent (minimum rent) plus a percentage of the tenant's net revenue
• Typical percentages vary by industry (3–15% of net turnover)
• The tenant must provide regular revenue reports and supporting documentation (e.g., cash books, management accounts)
• The landlord typically has audit rights over the tenant's records

Advantages for Landlords

• Participation in the tenant's commercial success
• Incentive to maintain attractive locations
• Flexibility during market fluctuations

Risks

• Revenue declines directly reduce rental income
• Administrative overhead for monitoring turnover reports

4. Market Adjustment Clauses

For longer-term leases with renewal options, market adjustment clauses allow:

• Rent to be reset to current market rates at option exercise
• Market rent determined by expert appraisal or comparison
• Often includes an arbitration mechanism for disputes

5. No Statutory Rent Increase Right

Unlike residential leases, there is no statutory right to increase commercial rent during the lease term. Without a contractual adjustment mechanism, rent remains fixed for the entire duration (pacta sunt servanda). A claim under frustration of contract (BGB § 313) is theoretically possible but requires extreme circumstances.

Best Practices for Landlords

1. Always include a rent adjustment mechanism in the lease
2. Index-linked rent offers the best balance of inflation protection and flexibility
3. Define the base index and adjustment threshold clearly
4. For turnover rent: Secure comprehensive audit and inspection rights
5. For long terms: Combine graduated rent with index adjustment after the graduation period

Landager automatically calculates index-linked rent adjustments, monitors graduation dates, and reminds you of due adjustments.

Back to Commercial Tenancy Law in Hesse – Overview.