Semi-detached house

Semi-detached house - A semi-detached house (DHH) is one half of a pair of houses in which two separate residential buildings are constructed side by side, sharing a common dividing wall. Each half of the house is typically situated on its own lot and can be sold and occupied independently.

Structural Characteristics and Definition

A semi-detached house, as defined by building regulations, requires that two buildings on adjacent lots be joined together as a single unit by constructing them side-by-side along the property line. The partition wall must meet fire safety requirements-typically fire resistance class F90. It can be constructed as a shared wall or as two separate walls along the boundary.

Typical semi-detached homes offer living spaces ranging from 120 to 180 square meters across two to three stories, with lot sizes of 250 to 400 square meters per half. Compared to a detached single-family home, they offer a more favorable ratio of lot area to living space, but less privacy along the shared boundary.

When building a new semi-detached home in Bavaria, setback requirements are often observed only toward the street and the non-shared neighbor boundaries-they do not apply to the shared boundary wall. This allows for more efficient use of the lot but simultaneously reduces the lateral distance to the second neighbor to zero.

Legal Considerations

Since each half stands on its own lot, these are two separate buildings-there is no homeowners’ association. Each owner is solely responsible for their half. Shared facilities such as driveways, drainage pipes, or shared gutters are governed by easements or neighborly agreements.

When renovating or adding a story, the zoning plan must be observed: Many zoning plans limit ridge height, eave height, and roof pitch to maintain a uniform appearance. If one half of the house differs significantly in construction from the other-for example, due to an addition or a change to the facade-this can lead to disputes with the neighbor, even if there is no legal requirement for consent under building regulations.

Energy Efficiency and Sound Insulation Aspects

The partition wall between the two halves of the house plays a central role in sound insulation and thermal insulation. Modern semi-detached houses with double-shell partition walls (two separate walls with an air gap or insulation) achieve very good sound insulation of over 60 dB, which is close to the level of a single-family home. Older semi-detached homes from the 1960s to the 1970s, on the other hand, often have only single-shell partition walls with a sound insulation rating of 50-55 dB-conversations and music from the neighboring half are then clearly audible.

In terms of energy efficiency, the partition wall offers an advantage: the thermal bridge to the exterior is significantly smaller than with exterior walls, as both halves of the house heat each other. This reduces heating energy requirements compared to a detached single-family home and is an often-underestimated advantage of this building design.

Practical Tip for Nuremberg and the Metropolitan Region

Semi-detached homes are popular in neighborhoods such as Eibach, Reichelsdorf, Ziegelstein, and Buchenbühl, as well as in surrounding communities like Feucht, Wendelstein, Schwaig, and Lauf an der Pegnitz. When purchasing, we recommend carefully checking the sound insulation of the partition wall and any existing easements. Ask the seller to provide the construction records-houses built in the 1960s and 1970s often have only a single-layer partition wall, which can impair living comfort and require costly retrofitting. Also clarify how shared facilities (shared driveway, shared rainwater drain) are legally regulated-missing easements can become a problem when reselling.

Frequently Asked Questions

Is a semi-detached house cheaper than a single-family home?

Generally, yes-in the Nuremberg metropolitan area, semi-detached homes are priced 15 to 25 percent lower than comparable detached single-family homes in the same location. This price difference stems from the smaller lot size, reduced privacy, and shared exterior walls. For buyers who are looking for the feel of a single-family home with their own garden but cannot or do not wish to afford a detached house, a semi-detached home is therefore an attractive alternative.

Do I need my neighbor’s consent for a renovation?

No, not for renovations within your half of the house that do not affect the dividing wall or your neighbor’s interests. However, as soon as the dividing wall itself, shared utilities, the exterior appearance, or the structural integrity of the entire building are affected, consultation with the neighbor-and often a building permit-is required. Unilateral changes to the roof or facade that disrupt the uniform appearance of the semi-detached house can be prevented by the neighbor under civil law if there is a corresponding design requirement in the zoning plan.

How good is the sound insulation in semi-detached homes?

Modern semi-detached homes with double-shell partition walls achieve very good sound insulation of 62 dB and higher-meaning conversations and everyday noises from the neighboring unit are barely audible. Older single-shell walls often only reach 50 to 55 dB. Retroactive improvement using cladding (drywall with decoupling) is possible and costs €1,500-4,000 depending on the wall length. When purchasing an older semi-detached home, we recommend using sound insulation as a bargaining point and factoring in the costs of a potential retrofit.

What prices do semi-detached homes command in the Nuremberg metropolitan area?

Current market data (2025/2026) shows a significant range for the Nuremberg metropolitan area: In sought-after neighborhoods of Nuremberg (Ziegelstein, Buchenbühl, Mögeldorf), purchase prices for nearly new semi-detached homes with 140-160 m² of living space range between €550,000 and €750,000. In well-connected surrounding communities such as Wendelstein, Feucht, or Schwaig, comparable properties range between 450,000 and 600,000 euros. Older semi-detached homes from the 1970s and 1980s that have not yet undergone energy-efficiency renovations are sold in the metropolitan region at a 10 to 20 percent discount compared to renovated comparable properties -which, based on a base price of 500,000 euros, corresponds to a discount of 50,000 to 100,000 euros. This range offers buyers who are willing to renovate the property themselves a real entry-level advantage with a predictable cost framework.

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