Ownable housing:
Dino Dee-lite motel room in Novac
If the player has a reputation of Accepted with Novac, the key can be obtained for free from either Jeannie May Crawford (if she's still alive) or Cliff Briscoe at the Dino Bite gift shop (if she's dead). It has numerous safe containers, but irradiated water.
Lucky 38 presidential suite and a penthouse in the Lucky 38 casino
Given to the player by Robert House after the first time you've spoken to him. This is the only place companions can be sent to specifically aside from their home locations. The Lucky 38 presidential suite is spacious, but has an ominous atmosphere shared with the rest of the Lucky 38.
The Tops presidential suite in The Tops
The player needs to complete the quest Ring-a-Ding-Ding!
There is also a High-Roller suite available if the player earns enough chips at the casino. Entering the room will complete the unmarked quest Big Winner, The Tops. The Tops presidential Suite has the best and most lively location, in the center of the strip.
Bon Vivant Suite in the Ultra-Luxe
The Bon Vivant Suite is won if the player wins 11,250 chips at the Ultra-Luxe Casino. The room is located among the other Ultra-Luxe Hotel Rooms and is similar to them in appearance. The room contains two beds, as well as two wardrobes and a suitcase for containers, a small bathroom and a toilet and sink with zero rads. The containers will not reset, and are 'safe', but remain marked red for stealing, as do all items within the suite.
This is not to be confused with the Ultra-Luxe Penthouse located in the short hallway behind the reception desk. Although the Penthouse is considered very large and fancy, and although a key may be found from Mortimer, it is not possible to sleep there and all containers are marked as stealing. It is guarded by two men who may become hostile if they see you. It is not possible to gain ownership of the Penthouse except through modding or console commands.
Brotherhood of Steel safehouse
The current Elder will give you the key upon completion of Still in the Dark. It has a Reloading Bench, a workbench and a Brotherhood of Steel Guard/Repairman named Paladin Sato.
Followers of the Apocalypse safehouse
The key will be given to you by Julie Farkas once you have gained an 'Idolized' reputation with the Followers of the Apocalypse and accepted her offer to join them. It holds one of the four copies of the D.C. Journal of Internal Medicine. The fridges are constantly restocked with food and thus not safe storage.
Caesar's Legion safehouse
The key is given by Lucius with a reputation of Liked with the Legion. It is visited by a Legion officer who will occasionally give items related to stealth, most notably Stealth Boys. In addition, you can find on the 3 beds: Centurion armor and a chainsaw, Praetorian guard armor with 2 Time bombs and the unique lucky shades, and on the final bed is a sniper rifle with another set of Legion armor.
Atomic Wrangler corner room
The player needs to complete the quest Debt Collector or kill Caleb McCaffery. Has no safe storage containers regardless of how the key is earned.
NCR Ranger safehouse
It is at southeast from Junction 15 Railway. Deathclaws gather nearby, so be careful on the first approach. Colonel James Hsu at Camp McCarran gives the player the key with a reputation of Liked with the NCR.
The Sink
It is only available upon completion of Old World Blues. Companions must be dismissed before the player can enter, but it can essentially be fast travelled to, even if the player is over-encumbered. When fully upgraded, it contains a workbench, Reloading bench, Electric hot plate and Auto-Doc. There is also a shop.