House purchase - Termination of the tenant
Dear Sir or Madam,
I urgently need information from you.
I want to buy a house for my son and his partner. The house has 2 separate apartments with separate entrances. The lower apartment on the ground floor is to be used by my son as a naturopathic practice (the change of use for this purpose has already been approved!). My son and his partner want to move into the upper apartment (for starting a family). Currently, the apartment is occupied (for about 6-7 years). I now need to terminate the lease with the tenant so that my son and his partner can move in. Currently, my son has a small apartment, but it is too small for starting a family.
Question: Can I terminate the lease with the tenant for own use? The current homeowner has verbally agreed with the tenant that he will receive a year's rent if he moves out on time. However, only we can terminate the lease, and only once we are registered in the land register. We would also offer him a year's rent so that he moves out on time! As far as we know, the notice period is 6 months. Can I have the tenant sign a document stating that he will indeed move out? If he signs, I need to know if the signature is legally binding. Or is such a contract unconscionable or similar? If he does not sign, what is the legal situation? Can the tenant possibly argue that the lower apartment does not necessarily have to be used commercially? Or does he not have the right to do so? In that case, can he argue: residential space takes precedence over commercial space?
According to the German Civil Code (BGB), the paragraph "BGB § 573a Simplified termination by the landlord" should apply, if the landlord moves into the lower apartment himself, the landlord can also terminate the lease without the need for a legitimate interest as defined in § 573..?
The purchase of the house is only an option for us in combination with living and working! This is also how the house was advertised on the internet.
The purchase of the house is almost finalized. Therefore, we need a response from you as soon as possible, as we are not very familiar with tenancy law.