Cost-based rent

Cost-based rent is a regulated rent that covers the landlord’s exact operating costs-no more and no less. It is primarily found in publicly subsidized housing, where government loans or grants are contingent on rents being set at a level that covers costs but is not profit-oriented. Cost-based rent thus differs fundamentally from market rent, which is determined by supply and demand.

Components of cost-based rent

The cost-based rent consists of several cost categories that the landlord is permitted to cover through the rent:

• Capital costs: Annuity (interest + principal repayment) of the construction loan, including public subsidy loans if applicable
• Operating costs: Administration, maintenance, risk of rent loss (flat rate according to II. BV)
• Depreciation: imputed depreciation on the building
• Operating costs: apportionable utility costs such as heating, trash, and water

If actual income exceeds the permissible cost-based rent, the landlord must return the surplus to the development bank or lower the rent.

The exact calculation of the cost-based rent follows the Second Calculation Ordinance (II. BV), which prescribes flat-rate management cost rates. For administration, €220-260 per residential unit per year is typically applied; for maintenance, €7-11.50 per m² of living space per year; and for the risk of rent loss, 2% of the target income. These flat rates do not account for local specifics-in practice, actual costs may vary significantly.

Cost-based rent vs. market rent vs. comparative rent

Several rental concepts coexist in German tenancy law:

• Market rent: freely negotiated, depending on supply and demand
• Comparative rent (local standard rent): benchmark in the rent index, basis for rent increases in the free housing market
• Cost-based rent: determined administratively, applies to publicly subsidized social housing as long as the commitment period is in effect

Once the commitment period expires, the cost-based rent no longer applies-the landlord can switch to market rent. This transition is referred to as the “release” of the social housing unit. In cities with tight housing markets, such as Nuremberg, this release is a critical issue: Every year, thousands of social housing units are released from price controls without new subsidized housing being built at the same time.

Significance of cost-based rent for landlords and investors

For investors offering subsidized housing, cost-based rent has both advantages and disadvantages. Advantages include favorable subsidized loans with low interest rates and government guarantees, as well as stable long-term rental income without marketing expenses. Disadvantage: Return potential is limited as long as the rent control period is in effect. In tight markets, cost-based rent is often significantly below market rent, so investors should carefully review the subsidy framework.

Cost-based rent is particularly challenging for investors during periods of rising construction costs and interest rates: If capital costs rise due to high construction interest rates, but the cost-based rent only covers actual expenses, profitability declines. At the same time, approval times for social housing projects are often long, which shortens the window for favorable financing terms.

The Social Policy Significance of Cost-Based Rent

Cost-based rent is a central instrument of housing policy designed to secure affordable housing for low-income individuals. In Bavaria, the state-through BayernLabo as the funding agency-provides low-interest loans and grants for social housing construction; in return, developers commit to cost-based rent for a fixed term. These commitments typically last 20 to 40 years. Anyone wishing to move into social housing in Bavaria needs a housing eligibility certificate (WBS), which verifies an income ceiling.

Practical tip for property owners in Nuremberg and Franconia

In Nuremberg, the city actively promotes social housing construction through the housing association wbg and municipal subsidy programs. Owners constructing new buildings with subsidized loans should carefully calculate in advance whether the cost-based rent fully covers operating costs-especially given rising construction costs and interest rates. A realistic business plan with a robust cost-based rent calculation is a prerequisite for subsidy approval. We are happy to advise you on subsidized housing projects in the region and assist with profitability calculations.

Frequently Asked Questions

Is the cost-based rent permanent?

No. It applies only during the so-called commitment period, which can range from 15 to 40 years depending on the subsidy program. After that, the apartment can be rented at market rates.

As a landlord, can I increase the cost-based rent on my own initiative?

No. Increases to the cost-based rent are only permitted if there is verifiable evidence that the underlying costs have risen (e.g., increased administrative costs, higher maintenance expenses) and the funding authority approves the increase.

What happens if the market rent is lower than the cost-based rent?

In relaxed markets, the cost-based rent can theoretically exceed the market rent. In practice, this is rare, as subsidies reduce capital costs. If the cost-based rent is higher, there is a risk of vacancy-a risk that must be factored into the investment decision.

How do I find out if an apartment is subject to a cost-based rent restriction?

The rent control status of a social housing unit is noted in the land registry or at the relevant subsidy agency (in Bavaria: BayernLabo or the municipal housing subsidy office). Buyers of a property containing subsidized apartments should explicitly clarify in the purchase agreement which units are still subject to rent control and how long this restriction remains in effect.

Can the cost-based rent be higher than the local market rent?

In structurally weaker regions and for projects with high construction costs, it is theoretically possible for the calculated cost-based rent to exceed the local market rent. In such cases, there is a risk of vacancies, as tenants can find cheaper housing on the open market. Investors considering social housing projects in such regions should carefully compare the market rent with the projected cost-based rent before making an investment decision.

Cost-based rent in the context of Bavarian housing policy

In recent years, Bavaria has significantly increased funding for social housing to counteract the growing pressure on the housing market in cities such as Nuremberg and Munich. BayernLabo offers various loan programs with interest rates well below market levels, which significantly reduces the cost-based rent for new construction projects compared to a purely market-financed alternative. In Nuremberg, the municipal housing association wbg Nürnberg GmbH, as the largest municipal housing company, is heavily involved in social housing construction and owns a significant portion of the subsidized rental housing stock. In addition, the federal-state program “Social Cohesion” offers funding for communal housing projects and neighborhood development. For private investors and cooperatives seeking to create new social housing, entering the subsidized rental market is most feasible in cooperation with the City of Nuremberg or the Government of Middle Franconia-these agencies provide guidance on available subsidy programs and the associated rent controls.

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