Two-family house new construction - Which costs to calculate?

I also thought a lot at the beginning and asked myself questions like what the child might be called. Single-family house, two-family house, multi-generational house, with or without a granny flat. I ultimately understood it this way: if everything basically runs through you (financing, land register), then it is a single-family house. Finance separately if your parents register themselves, for example, in the land register for their apartment.

What I would be interested in, though, is what makes you so sure that you can change the development plan for your property to three residential units by exemption?

What do you interpret this question from?

Where do you interpret this question from?

From here:

From personal experience (if it should become concrete for you and the financing is clarified) you should look for an architect. 3 residential units mean residential building class 3. In addition, it feels like 90% of development plans limit the maximum number of residential units to 2.

This answer to the thread starter implies that you have commissioned your architect to circumvent/override the specification of the development plan by exemption or whatever, since you are planning 3 residential units. If not, I would see no reason for your related comment to the thread starter.

Regards from the Rhineland

We did not find any prefabricated house provider in our discussions who would plan 3 residential units with us. Okal Haus, for example, clearly defines a maximum of 2 residential units. Therefore, it was more or less clear to us that we would probably also talk to an architect. (As mentioned, at the beginning we had only spoken with prefabricated house providers and would certainly have decided on one if the overall package had been right). The issue with the development plans is certainly somewhat frustrating, because it is stated like this in almost every one. It may make sense, but it does not help us.

Hello,

In our conversations, we did not find a prefab house provider who would plan 3 residential units with us. Okal Haus, for example, clearly defines a maximum of 2 residential units.

To the best of my (current) knowledge, none of the prefab house providers often frequented by builders can do that. If you had inquired, for example, at Weberhaus® or also at Haas Fertighaus®, you would have received a different answer. The subsidiaries of Deutsche Fertighaus Holding are geared towards maximizing profit with minimum effort; they ignore the colorful variety between these two cornerstones.

The issue with development plans is partly frustration, because it’s stated like that in almost every one. It may make sense, but it doesn't help us.

That always depends on the viewer’s point of view.

Establishing a development plan requires more than "just" determining the number of residential units. Among the steps towards the final development plan, for example, necessary parking spaces are also taken into account. For your 3rd residential unit—put simply—no parking spaces are possible.

Therefore, I see little to no leeway here—not even with an architect—to circumvent this requirement of the development plan. And beware: should he (the architect) get the idea to designate the planned granny flat in the attic as "storage" in the building application and you—after house handover—think about renting out the granny flat: don’t count on your neighbors. Otherwise, it will get expensive for you.

Rhineland regards

I am not renting out the second residential unit (at least as long as my parents are alive) – they enjoy a lifelong right of residence there.

Please explain to me how I am supposed to finance separately in the case of a new build. Only the interior finishing, right? But if I commission an architect to build a house with 2 residential units, he would not create two separate invoices or have the craftsmen create them, would he?

I am completely inexperienced in this area. I have only heard about Riester.

Rent would be tax-deductible (if eventually my parents no longer live there), and I can also claim the loan interest – that’s clear. That should generally have a positive effect on my finances, otherwise no one would rent out apartments. But as I said, renting out is not on the table for now. And simulating a rental, i.e., drawing up a rental contract to enjoy these tax benefits but never actually paying the agreed amount, would in my opinion be tax fraud, right?

I would also not recommend a multi-generation house. I have seen that with my parents-in-law. There was never any privacy because the grandmother was always around, and when she died, you couldn’t rent out the unused part of the house either, because it was not separable.

Better to plan lockable and separately billable residential units from the start. By the way, as far as I know, the lifelong right of residence relates to the (cold) rent and not to usage-based additional costs. Therefore, separate meters for water/electricity/heat quantity also make sense even with a lifelong right of residence. Separate loans can be quite helpful for later renting out.

Multigenerational house, as I described it in , includes separate apartment entrances and also separate supply points/billing. It is called a multigenerational house because the layout is intended to enable the older generation to live on the ground floor and leave the stairs to the younger generations.