K&S Energy

Financial Benefits – Cost Allocation & Depreciation

Energy-efficient renovations are not only environmentally sound – they are also financially advantageous. As a landlord, you can pass on costs to tenants and benefit from tax deductions. We show you how to optimize both strategies.

Planning
Execution
Rent increase

§ 559 BGB – Modernization Cost Allocation

  • Up to 8% of eligible modernization costs can be annually added to the tenant’s rent
  • Maximum monthly rent increase: €3.00/m² (or €2.00/m² if the rent is below €7.00/m²)
  • Only applicable to energy-efficiency improvements or measures that enhance residential quality
  • Requires written notice and compliance with statutory lead times

Maximizing Cost Allocation through Measure Bundling

Strategic bundling of modernization measures – such as insulation, heat pump installation, and hydraulic balancing – enhances the overall energy-efficiency impact and strengthens the justification for rent increases. Independent energy assessments further support your legal position.

Tax Depreciation under the German Income Tax Act (EStG)

  • Maintenance expenses: Fully deductible in the year the work is performed
  • Capital improvements: Depreciable over several years depending on scope and classification
  • Special depreciation options for listed buildings or properties in redevelopment zones

Practical Example

A thermal insulation upgrade in a multi-family building costs €60,000.
8% of this – i.e. €4,800 per year – can be allocated to the rent.
In addition, the investment is tax-deductible, significantly reducing the net financial burden.