Dear fellow readers,
a little update from me, also as a report of experience for house (purchase) buyers who have a similar contract model (pay first / get paid first, handover much later).
Our draft contract provides that we pay the full purchase price at the end of the year. A fixed move-out date for the sellers is stipulated in the contract, as well as that in case of non-compliance with this move-out date, a foreclosure will take place. (Contrary to my fears, the sellers no longer have small children.) During the period between payment of the purchase price and the move-out, we receive a monthly "usage compensation" from the sellers (which explicitly is not rent and does not establish a tenancy, but a right of use until the move-out).
The individually variable additional costs such as gas, electricity, hot water, but also waste disposal are paid by the sellers until the move-out. Building insurance and property tax are already paid by us from the date of payment of the purchase price.
This seems to us to be a fair model for everyone.
Currently, we are only waiting for the financier from the sellers’ side to give the OK (regarding the purchase contract), then it will go to the notary (if everything goes well).
By the way, because of the note about possible road renovations / outstanding payments thereof here in the thread, I called the building authority and also asked about any contamination in the soil etc.
A very nice phone call. (There were no outstanding invoices or contamination.) Later, when our bank wanted the area calculation from the building file, I got it quite unbureaucratically and quickly, since I already had a foot in the door with the person responsible for building matters :)
From the big city, I know it to be rather Kafkaesque, where any authority employees are a kind of majesty who naturally cannot be reached by phone, but grant isolated audiences, during which, after consulting several cash machines, passport photo booths, at least two other offices and after a reasonable waiting time of two more months, you might eventually get the desired form. Or maybe not ;-)
Many thanks for your tips! To be continued.