Two-family home

A two-family home is a residential building containing exactly two legally and structurally separate residential units, which is either used entirely by the owner, partially rented out, or operated entirely as an investment property. It combines the advantages of home ownership with those of an investment: The rented unit generates rental income that helps cover financing costs, while the owner-occupied unit provides long-term home ownership. From a tax perspective, the two-family house offers interesting planning options due to the division into owner-occupied and rented areas.

Structural and Legal Characteristics

A two-family house consists of two completely separate residential units, each with its own entrance (or at least its own access), its own kitchen, and its own bathroom facilities. It can be designed as a classic house with a ground-floor and upper-floor apartment, as a house with a granny flat (basement apartment), or as a semi-detached house. Under building law, it is classified as a low-rise residential building pursuant to § 2 (4) BauO NW (and analogous state building codes); under tax law, a distinction is made between owner-occupied and rented units. A division into condominium ownership under the WEG is possible but not mandatory.

The distinction from a granny flat is fluid: A granny flat is typically smaller, not fully self-contained, and more subordinate to the main house. Under building regulations, it is often approved with more generous dimensions, as it is considered a supplement to the main residential building. A fully equivalent two-family house, on the other hand, generally has two equivalent units with their own entrances. This distinction is relevant under building codes and for tax purposes.

Financing and Tax Benefits

The major advantage of a two-family home for owner-landlords: The costs attributable to the rented unit are tax-deductible as business expenses-mortgage interest, depreciation (AfA: 2% per year for buildings constructed after 1925), maintenance, and a proportionate share of management costs. Parts of the shared infrastructure (roof, basement, exterior facade) can also be claimed on a pro-rata basis. Anyone who buys a two-family home and rents out part of it should have a tax advisor set up a clear separation of costs from the very beginning.

The tax allocation is typically based on the area allocation formula: If the rented unit accounts for 40% of the total area, 40% of the proportionate total costs (mortgage interest, building insurance, property tax) can be claimed as income-related expenses. Accurate documentation of the floor area-including all ancillary rooms and common areas-is essential for this. If this documentation is missing, the tax office may make estimates during an audit, which often turn out to be less favorable.

For a purchase price of 600,000 euros for a two-family home in Nuremberg with equal use (50% owner-occupied and 50% rental), the following rough tax impact results: The portion of the purchase price attributable to the rented unit, amounting to 300,000 euros (minus the land value of approximately 250,000 euros), can be depreciated at a rate of 2% per annum-that is 5,000 euros in annual depreciation. Added to this are proportional interest expenses of, for example, €4,000 and other income-related expenses. At a tax rate of 42%, this results in annual tax savings of around €3,800 from depreciation alone.

Two-Family Home as an Investment in Nuremberg

In the Nuremberg metropolitan area, the two-family home is a popular entry-level option for real estate investors and owner-occupiers with a rental component. Rental yields vary greatly depending on location-Nuremberg neighborhoods such as Schweinau, Eibach, or Langwasser versus locations near the Old Town. Those who buy to use one unit themselves and rent out the other benefit from more favorable financing terms (owner-occupier portion) while still achieving a return on investment.

In practice, the gross rental yield for typical two-family homes in Nuremberg ranges between 3.5% and 5.5%-depending on location, condition, and amenities. The owner-occupancy portion reduces the return on equity but improves financing options and quality of life. For many families, the two-family home is therefore the optimal model: home ownership combined with a tax-advantaged asset-building component.

Simplified Right of Termination for Owner-Occupants

A special legal advantage of the two-family home: Section 573a of the German Civil Code (BGB) grants the owner of a two-family home who lives there themselves an easier right to terminate the lease. They can terminate the lease of the tenant in the other unit without a specific reason for termination (no personal need or breach of contract required)-however, the statutory notice period is extended by three months. This privilege gives owners more flexibility, but it is contingent on the owner actually residing in the building.

If the owner moves out and also rents out the second unit, the privilege no longer applies to future terminations-regular tenancy law then applies with the usual requirements (personal need, breach of contract, or hindrance to economic utilization).

Practical Tip for Owners in Nuremberg and Franconia

In Nuremberg and the surrounding area (Fürth, Erlangen, Schwabach), we are seeing sustained high demand for two-family homes-especially from families who want to have parents or in-laws live nearby without moving in together entirely. “Multi-generational living” in a two-family home offers clear practical and tax advantages. We assist our clients with both the purchase and sale of such properties and are familiar with the relevant locations and prices throughout the metropolitan region.

When purchasing a two-family home, we recommend checking early on whether a certificate of separation exists for both units-and whether dividing the property into condominiums under the German Condominium Act (WEG) would be possible and advisable. The latter can make resale significantly more flexible later on: Instead of having to sell the entire house, both units can be sold separately.

Frequently Asked Questions

Can I divide my two-family home into condominiums?

Yes. Division under the Condominium Act (WEG) is possible, but requires a division plan, a certificate of separation, and a notarial declaration of condominium ownership. After the division, the units can be sold or mortgaged separately-which can yield significant price advantages in a future sale, as condominiums often command significantly higher prices per square meter than units in undivided two-family homes.

How is a two-family home valued for loan purposes?

Banks value two-family homes using the asset value method and also consider the income value for rented units. The rental income from the second unit can be factored positively into the credit assessment, thereby increasing the affordability of the financing. Different banks handle this calculation differently-some count only 70% of the net base rent (safety margin), others up to 90%.

What termination rights do I have as an owner-occupier vis-à-vis the tenant?

As an owner who lives in a two-family house yourself, you have a simplified right of termination under Section 573a of the German Civil Code (BGB): You can terminate the lease of the tenant in the second unit without a specific reason-however, the statutory notice period is extended by three months. This privilege applies only if you actually live in the same building.

What should be considered when selling a two-family home with an ongoing lease?

When selling, the principle “sale does not terminate the lease” applies (Section 566 of the German Civil Code (BGB)): The buyer automatically steps into the existing lease as the new landlord. This can affect the purchase price, as potential buyers who wish to move in themselves would first have to terminate the lease-which involves time and, in some cases, legal disputes. When selling a rented two-family home, we recommend communicating the rental situation transparently at an early stage and, if necessary, exploring an agreement with the tenant regarding early termination of the lease (in exchange for a settlement payment).

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