Just before agreeing to purchase a condominium unit - Questions and doubts

But I wonder what happens if I don’t choose an eco provider?

I think you have to prove the green electricity once for the subsidy. After that, no one will ask again. For me, it will be the wallbox combined with photovoltaics = wallbox for free

Is it worth joining a homeowners' association regarding advice & co.? For example "Wohnen im Eigentum e.v." or the VDWE? Anyone have experience?

How is the regulation with you regarding the tolerance deviation of the condominium size in the construction contract? What also puts me off a bit, besides other things, is that the developer reserves the right to make changes to the partition deed & community rules in my name. Is that standard?

Did you actually negotiate the price again? Let's please exchange directly if possible & there is time these days.