Single-family house with 3 children's rooms

Which neighboring house was demolished? - Regarding distances, a demolition would not change anything as such, unless a distance surface assumption would also be deleted in the process.

Yes, that's correct. It does not affect a neighboring house. There are no building encumbrances or similar. The house that stood on the current building area was demolished, and now there is a gap again. From my point of view, it was also set quite arbitrarily back then, especially since the building areas on neighboring plots are somewhat offset. I will call the office next week, but I don't believe there is any room for maneuver here. Even a slight deviation regarding two-story construction (omitting the loggia and building the house smaller instead) was assessed as probably not approvable (the municipality would be in favor, but the district office, which ultimately approves it, is apparently quite formal).

Yes, I had read that. I just wanted to see the calculation. So the raw numbers.

They are not yet available regarding the roof structure, but I calculated it myself once based on the drawing (with an estimated roof structure) and came to similar values.

Unfortunately, I’m not familiar with that, but it sounds strange. You still have 3m on each side to dance and move. When I see the townhouse builders who build with basements and directly attach to the neighboring house...

Townhouses are built in one piece; you can still drive past somewhere on the side. Without sheet piling, that probably wouldn't be possible with us anymore if the house is built too close to the sides. The only option would be to build the basement smaller than the upper floor. That could be done with a larger city villa with a large roof terrace (= single-story), provided the building envelope is enlarged.

Terraced houses are built in a row,

Haha, just ask .

I'll call the office next week,

I think that's very good. It's worth a try. And ask why if they initially say no. Look at the neighboring L-shaped house. It also appears to be positioned sideways by eye. Measure what size that is. Even without the L-piece, you're probably not far from your desired dimensions.

Even a slight deviation regarding two-story structure (omitting the loggia and building the house smaller instead) was assessed as probably not approvable (the municipality is in favor, but the district authority, which ultimately approves it, is quite formal)

It doesn't have to be that way. If all neighboring houses meet the "non-two-story" condition, the office will have a hard time with that. Purpose is a uniform appearance in the neighborhood / precedent, etc.

Rotating a building envelope where different building envelopes already exist in the neighborhood can be somewhat easier.

Fingers crossed for you and if it works out:

Rotate the house, do it, yes do it, rotate the house. (Will be my new mantra)

Row houses are built in a block, you can still drive past somewhere on the side. That probably wouldn't be possible for us without sheet piles, if the house is built too close to the sides.

Why? No one has to drive through there during the 8 weeks. Or am I missing something?

P.S.: Rotate the house! Yes, do it!

It was also determined very arbitrarily from my point of view back then, especially since the building envelope at neighboring properties is somewhat offset.

The development area probably started according to §34 and only received a development plan later; in that case, fixing the actual building envelopes is not unusual.

Presumably, the building area began according to §34 and only later received a development plan, so fixing the actual building envelopes is not unusual.

Well, I don't know how difficult or easy it is to get rid of a registered encumbrance on a property. Maybe can help with his inexhaustible knowledge. Does the neighbor have a perpetual right that he can insist on, to rebuild his house up to 1m from the boundary and thus impose the 2m extra distance on the OP? Or is the matter disputable again after the house is demolished?