The basic idea is easy enough: a state grants the right to live there to foreigners who commit a set amount in property. The qualifying amount is set very differently across programmes, and governments revise it regularly.
An important distinction separates a residence permit and a passport. A residence permit gives you the right to live in the country, usually on a renewable basis, while full nationality normally requires far more time and additional conditions. Any offer of nationality in exchange for an apartment purchase is a warning sign.
Beyond the investment itself, programmes come with extra obligations. Frequent requirements involve a police clearance certificate, medical insurance, proof of income and a required physical presence in the country each year. Missing any of these can end the status even if the property is still yours.
Fiscal residency is a different question altogether. Owning property does not automatically make you a tax resident, but spending enough time in the country usually will. A number of states rely on a day-count rule, and the implications touch income earned elsewhere.
A sensible approach remains straightforward: buy flats in abu dhabi something you would be happy to own, and treat the permit as a bonus. These routes get restructured sometimes at short notice, and an apartment bought only mersin real estate for sale paperwork can be a poor buy property in corcubion asset once the rules change.