I am not 100% sure about the following, so take it with a pinch of salt. We have a thing called a golden visa for non-EU citizens, where basically you can enter and stay in the country as if you were a EU citizen.
To be eligible for one of these golden visas you must either:
- own property worth at least 500k euros
- have at least 1 million euros invested in the country
- create a certain number of local jobs~
These numbers may have changed because the law was updated and I remember reading that if you invested a certain amount in renovations or improvements in the property, the value drops to 350k euros.
Anyway, as I said you probably would have to get more accurate information but these special visas are a thing and maybe you qualify.