If you do the quest for Mr House, make sure you also go see Ambassador Crocker if you want to advance the NCR questline, for example. For example, House, Caesar, and Ambassador Crocker will all tell you to visit the Boomers. At some point, each quest line will block off the other quest lines, and you will get a message telling you that if you keep doing what you are doing, a particular faction won't want to work with you any more. You can follow all of the quest lines (House, NCR, Independent, Legion) up to a point. The third is Vulpes Inculta, or if you killed him previously, another Legion representative. Go meet with Ambassador Crocker if you want to follow the NCR quest line. The second is an NCR messenger who will tell you to meet with Ambassador Crocker. Inside The safehouse, you gain access to a bed.
RELATED: How to Find Every Snow Globe in Fallout: New Vegas. Then, you need to speak with Colonel James Hsu to obtain the key to the NCR Ranger Safehouse. Either way it has no impact on an NCR playthrough. Fallout: New Vegas quest IDs lists the quest IDs that can be used in the PC versions console. The NCR offers you a safehouse if you reach the 'Liked' status or higher in their faction.
They will approach you either as you leave the Lucky 38 or as you leave the Tops casino. After completing the first two NCR quests, (Things That Go Boom and Kings Gambit), head to Hoover Dam and talk to Colonel Moore. At some point, depending on how and when you do things, you should be approached by three people.
