Surcharges of 10% despite a fixed price contract

I wonder how prospective builders can still decide on a specific house when the price can be increased at the builder's discretion in the end. Price comparisons between different providers also no longer make sense then.

Not entirely at will, and price comparisons just proceed differently then (i.e., customers exchange more specific information about price reliability).

It also seems to be the case that construction companies file for insolvency and then simply continue with someone else as managing director.

This is a persistent myth (which is indeed sometimes tried because some builders believe in it, notably those of the Fleischerhaus-GU type), that one could simply choose the timing of an insolvency filing.

Where can I find a list of abbreviations in the forum? I have already tried the search function without success. That way, I can avoid questions like, what is a GU. Thank you for the help.

Where can I find a list of abbreviations in the forum? I have already tried the search function unsuccessfully. That way I can avoid questions like, what is a GU. Thanks for the help.

GU is something like a general contractor

This is a persistent myth (which is actually attempted because some construction contractors, notably mainly those of the Fleischerhaus-GU type, believe in it) that one can simply choose the timing of a bankruptcy filing.

In order to avoid claims that one does not want or cannot pay, bankruptcy is unfortunately also possible. Therefore, my recommendation is to demand a contract performance guarantee. In the event of financial difficulties, the bank will not provide this.

what is a GU,

GU = General Contractor: company that executes a construction project with its own employees as well as subcontractors
GÜ = General Developer: company or person who carries out a construction project but does not maintain their own construction operation. The GÜ can commission both subcontractors and a GU for the construction work
Developer: GU or GÜ who sells you a house or an apartment including the land, which is newly built

Therefore my recommendation is to demand a contract fulfillment guarantee. In the event of a financial downturn, the bank will not provide this.

This instrument is absolutely recommended.

To avoid claims that one does not want or cannot settle, unfortunately insolvency is also possible.

In rare special cases, which the public prosecutor does not like to talk about, yes. But not in the sense of the common notion that if someone does not feel like paying, they just quickly transfer the Ferrari to their girlfriend, then throw the office key at the district court and laugh at the bailiff from the penthouse rooftop terrace.