Rental house - prefabricated house or "conventional" brick construction

It's unfortunately not always that simple, you always have to consider the individual case...

Understood. But shifting the focus away from the layperson's reflex to think technically about construction, towards the financial aspect which is particularly worth considering in rental properties, makes sense and is illustrated more clearly with simple "round numbers". Of course, reality is more complex and individual.

That's right. I want to live in my own house. I want to live from the rental property. This is a fundamental paradigm shift that extends into the construction technical field but has more aspects. The example with the guest toilets. If four guest toilets cost me 40 thousand more for four residential units, I need to get about 3,000 more in annual rent, otherwise it is not worth it.

The example with the guest WCs. If four guest WCs cost me 40 thousand more for four residential units, I have to get about 3,000 more in annual rent, otherwise it’s not worth it.

I agree with you mathematically, but the attractiveness of the apartment also plays a role: 90 sqm is a size where you don’t just get potential tenants who need the space due to family status, but also those who need less space but earn well. And the lady of the house would like her husband, when she wants to put on makeup in the bathroom, to move to the small toilet for the big business. And he wants that too, because he can read the sports section there in peace. And then without a guest WC, the lady says “no” during the viewing, and the only new tenants left are the ones with two half-grown kids.

The same topic: apartment versus semi-detached house: the latter is nicer for young families, like a home of their own, but rented. Retirees think: who knows how long we’ll still want to climb stairs inside the apartment.

By the way: has our question regarding the DH already been answered?

Best regards, Yvonne

In my opinion, a semi-detached house is the worst option after a detached single-family house, as houses somehow have the worst returns. Everyone wants a garden at the house, but no one wants to compensate for that accordingly with the rent.

In my opinion, it makes more economic sense to increase the number of apartments and design the whole house, for example, as a 4- or 5-family house, provided that the development plan allows it. This way, you can kill several birds with one stone.

-> better return on the invested equity through the use of the leverage effect
-> tax advantages through interest expenses
-> better utilization of the existing land (ratio of rentable area to land area)
-> ratio of rented area to communal areas/facilities is improved (e.g., heating/staircase/laundry room)

... and less concentration risk, as there are more housing units