ᐅ Additional Costs for Residential Units

Felix85 schrieb:

I didn’t expect “volume discounts.” I actually wanted to approach it the other way around: What can I do myself in the planning phase to design multiple residential units as cost-effectively as possible?

That’s not really the other way around, but maybe what you’re aiming for would be better described as “synergy effects.”

Felix85 schrieb:

For example, stacking bathrooms and kitchens on all three floors. Does that help? Or is it completely irrelevant in terms of construction costs?

Grouping the piping stacks is definitely sensible in a two-and-a-half-story single-unit building, but even the twenty-first residential unit won’t cover its own cost through that alone ;-)
Better focus on building a nice home primarily for yourself, instead of already feeling like a large-scale developer just because you might add a second in-law apartment 🙂

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Felix85 schrieb:

Is that so? I have currently planned a roof pitch between 30 and 35 degrees. This still allows for a significant amount of living space in the attic conversion, which would be sufficient for an apartment for the child (especially during the first approximately 5 to 10 years during/after education or university).

You are ignoring advice: a tent roof will not provide a second means of escape. However, a self-contained residential unit requires one. Many questions do not change the facts.

ypg schrieb:

You are resistant to advice

Or you are unfriendly 😉 Sorry, this is truly a very informative forum when you get in touch with the right people. But what I have read so far (mainly in other threads, but now you’re also starting here) in terms of assumptions, generalizations, and sometimes even insulting judgments, is in stark contrast to what this forum (in my opinion) should be about.
To the point: Why should I be resistant to advice? If an escape route can be planned there according to the architect, where exactly is the problem? There are special roof windows designed as escape routes. Why shouldn’t they be installed in a hip roof with a 30-35 degree slope?
Advise me, then I won’t be resistant to it. But that requires some information first, so that your counterpart (who is obviously not as all-knowing as you) can also understand you.

ypg schrieb:

Many questions don’t change the facts.

You always start with many questions when you do something for the first time. The real question is how those questions are received or in what environment you ask them. There are supportive environments… or not. Then answers tend to sound condescending, are hardly helpful, or don’t come at all.
You are right that many questions don’t change the facts, but that’s not the point. It’s not about changing the facts; it is about understanding them first and, if necessary, finding workable alternatives. If my plans don’t hold up, I’m the last person who wants to defy physical laws. But if they do hold (or problems are solvable), I can implement them.
For example, my question about a cold roof has still gone unanswered. Or whether a hip roof insulation is particularly expensive. So why should I be resistant to advice if I haven’t heard a counterargument against insulating and finishing a hip roof yet?

11ant schrieb:

Concentrating the risers is already sensible in a two-and-a-half-story single-family house, but even the twenty-first residential unit doesn’t pay for itself yet ;-)

I didn’t expect such extreme savings either. But in principle, I have no problem planning that way. If it reduces the costs for installing the pipes a bit (even if only by 1-2%), that would already be something.
Is there a rough estimate for the costs of laying the pipework/connections for the kitchen and bathroom upstairs if they are stacked versus if they go horizontally across the house?

Felix85 schrieb:

Is there a rule of thumb,

No. For apartment buildings with 0.25 dozen residential units, you won’t find a single student of housing management anywhere in the world who would want to make that the subject of their graduate thesis.

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Felix85 schrieb:

Or you are being rude

I am not being rude, I have provided you with factual answers.

Felix85 schrieb:

There are special roof windows designed to be used as escape routes.

We have already discussed this topic! See:

ypg schrieb:

Although I don’t know what the house looks like, I assume your apartment was not in the attic, and if it was, then it had dormers or at least one window that served as a second escape route. Many standard windows count as a second escape route, a roof window does not.

Felix85 schrieb:

But some of the assumptions, generalizations, and at times insulting judgments I have read—especially in other threads, and now you’re starting here too—are completely opposed to what this forum (in my opinion) is supposed to be about.

Enough now! Get your information from this thread and learn to understand. But not just because you don’t want to read what you don’t like.

Felix85 schrieb:

There are special roof windows designed to serve as emergency exits.

Yes, Yvonne was a bit too harsh there. But I didn’t want to argue about it last night, especially since the topic of such exceptions is too complex and would derail the discussion here.

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