The basic idea is easy enough: a state extends a temporary residence permit to overseas buyers who place a qualifying amount in housing. The qualifying amount is set very differently from country to country, and the authorities revise it regularly.
An important distinction divides the right to reside and citizenship. The permit gives you the right to live there, generally subject to renewal, while citizenship usually demands years of actual residence. A promise of nationality simply for buying an apartment is reason for caution.
Beyond the purchase price, such permits impose extra obligations. Typical examples include a police clearance certificate, medical insurance, proof of income and a minimum number of days on local soil annually. Missing any of these can cost you the permit regardless of the buy property in ozankoy.
Tax status is a different question altogether. Holding a residence permit does not necessarily make you liable for local income tax, bang tao real estate and crossing the day-count threshold usually will. Most jurisdictions apply a day-count rule, and the effects reach earnings from abroad.
A sensible approach remains simple: choose the buy property in montenegro first, and treat the permit as a bonus. Such schemes get restructured sometimes at short notice, and an apartment bought only for paperwork becomes a poor obalno-kraska real estate asset once the rules change.