Ways to fulfill the building obligation/building deadline in order to build later

Thank you for your suggestion. But wouldn't that be the same as an application for an extension of the construction deadline, which I have already submitted? The repurchase right entails that the municipality gets something back if, for example, requirements are not met; extending this would also extend the construction deadline.

Hello, the construction deadline is one thing, the sale with profit is another. The goal of the municipalities is a) that plots are not left undeveloped forever and a residential area is "finished" at some point, and b) that land purchases are prevented from speculation. Both are achieved through a repurchase right and construction obligation. If you are sure that you want to build and live on the plot, for example, offer the municipality that your construction obligation is extended/suspended, but in return you accept a repurchase right upon sale, which applies significantly longer than the construction obligation. You are in the position that you want something from the municipality – so you also have to offer something. Preferably something that benefits the municipality and does not hurt you too much. I would forget the idea of the tiny house. Your purchase contract probably says something like "for development with a single-family house"; as the building authority, I would not classify a tiny house as a single-family house and would reject it at first.

As long as the OP does not play with open cards, the thread is nonsense.

In the end, it doesn't matter what you come up with: there is always a neighbor who first wonders, then gets annoyed, and then complains to the [Amt]. And the authority knows very well who has the right.

If I'm already investing so much money to realize such a financially expensive project, then I definitely don't want to have time pressure and make any decisions hastily just to meet the requirements of the municipality, from which I also didn't get the plot cheaper (no local resident model).

Well, if you already can't meet the set deadline for the start of construction (usually 36 months, based on my experience) + extension, you shouldn't be surprised by the negative comments here.

I want and have to comply with all legal requirements, including a building permit for a tiny house or mini house, I know that. Could you please explain to me how the municipality cannot approve such a construction project?

Many tiny/mini or other types of constructions are not permanently connected to the ground and are therefore nothing other than caravans. Also, this house must fit the development plan and be eligible for approval. Unfortunately, most are not (e.g., if the Energy Saving Ordinance is not complied with). There is a good reason why almost all houses can only be built in holiday home areas or similar.

What speaks against pouring a slab already, even if it's just the one for the garage? (I'm into slabs... You know...)

Because the construction also has to be completed and otherwise even more money would be wasted. But with an actual start of construction, one could certainly beg for another extension of the deadline.