What is the cost difference between a two-family house and two semi-detached houses?

For a professional answer you need a professional question. What exactly do you want to know about this topic? What is the exact initial situation? More details please.

In the case of a semi-detached house, for example, two independent properties separated in the land registry must exist. In addition, semi-detached houses with party wall construction must be permitted in the development plan or possibly applied for as an exception, etc. In the case of a two-family house or a single-family house with a separate granny flat, two separate apartments must be proven, etc.

Yes, gladly: The development plan permits both semi-detached and two-family house construction.

In response to the (written!) question to a sales agent of a property developer about how the costs of a semi-detached house and a two-family house differ, the answer was that for the two-family house, "additional costs of approx. EUR 20,000 arise for bathroom, guest WC, technical equipment, kitchen connections, and certificate of separability."

Therefore my question is whether perhaps the certificate of separability makes a two-family house more expensive than a semi-detached house.

Good evening Will,

In the case of a semi-detached house, for example, two independent parcels of land that are registered separately in the land register must be present.

If they "hide" behind a shared front door, rather not; there is some leeway :D

Rhenish greetings

To the (written!) question to the sales representative of a property developer about how the costs of a semi-detached house and a two-family house differ, the answer was that for the two-family house "additional costs of approx. 20,000 EUR arise for bathroom, guest WC, technology, kitchen connections and certificate of separation."

Can I have this letter? Then I won’t build semi-detached houses anymore, but will buy them from him :D

Therefore my question is whether the certificate of separation perhaps makes a two-family house more expensive than a semi-detached house.

The certificate of separation certifies that all apartments designated by numbers have been structurally separated in such a way that they function as independent and self-contained units; it is also a prerequisite for registering co-owners in the land register. This can also be done by the surveyor; so the costs are manageable.

Two semi-detached houses are clearly more expensive than a two-family house! On the one hand – if you do not separate according to the WEG (Apartment Ownership Act) – because of the two plots of land, on the other hand because of the construction costs. A semi-detached house differs monetarily from a detached single-family house only in that one wall is not plastered.

For example, 6.75 x 10.25 m, ground floor + upper floor, price per half EUR 175,000 – totaling EUR 350,000 for the complete semi-detached house.

In a two-family house, both residential units are usually stacked one above the other, which means the house (unlike the semi-detached house), as well as the plot, can be smaller. In a two-family house both units share one utility room, which must be accessible independently by both parties – but only one is needed. Of course, both units must be supplied independently with electricity, gas, and water, and the consumption must be billed per party; still separate front doors – that’s basically it.

Example: 10.00 x 12.00 m, ground floor + upper floor, price for the two-family house EUR 260,000.

So, how about that letter..... :cool:

Rhineland greetings

Can I have this letter? Then I won't build any more terraced houses myself, but buy them from him :D
.....
So, what's up with the letter ..... :cool:
....
Rhenish greetings

Thank you very much for the detailed and understandable answer!!!

The statement by this salesperson is indeed scandalous (may I actually publish it here?) - and unfortunately says nothing about his terraced house prices being cheap.
That probably means: hands off! - Who knows what else might come ...

Thanks again!

(may I actually publish it here?)

Only with their consent or stripped of any information about the provider behind it; the latter, however, makes no sense. Rhineland greetings