: During the mission "The Holland Play," you must choose to kill Playboy X . If you kill him, Dwayne will give you the deed to the penthouse.
If you are playing the DLCs ( Episodes from Liberty City ), safehouses are also unlocked through story progression: how to buy a house in gta 4
If you are playing on PC, you can install mods to enable property purchasing. Users on Reddit and other forums often suggest the mod, which adds markers to the map where you can spend your end-game cash on new locations. : During the mission "The Holland Play," you
: Unlocked after completing the mission "Roman's Sorrow" . how to buy a house in gta 4