In Portugal it has to be an investment (350K+ depending on where) which ideally is a house. Purchased with the visa in mind, has to be mentioned in the contract

In Portugal it has to be an investment (350K+ depending on where) which ideally is a house. Purchased with the visa in mind, has to be mentioned in the contract. You should involve a lawyer for that. The house (or apartment) can have a mortgage and be rented out. I learned this from selling a house in Cascais to a Taiwanees woman.