Looting is a simple task where you can gather items or gold, or maybe just for skill increases, or fun. But looting is a serious matter. When you get to a decent level, looting in good locations could get you a ton of gold, or amazing items, It is possible to get every house in the game,in a few days, just by looting and selling in good locations.
ListEdit
Occupants
Bandit
26-27 
Rockmilk Cave — A medium-sized cave between Bravil and Leyawiin containing marauders and bandits (quest-related). (map)
25-25 
Cursed Mine — A medium-sized mine west of Skingrad containing bandits. (map)
22-22 Squandered Mine — A medium-sized mine south of Cheydinhal containing bandits (quest-related). (map)
21-21 Belletor's Folly — A medium-sized mine south of Kvatch containing bandits. (map)
17-17 
Talwinque — A medium-sized Ayleid ruin between Skingrad and Kvatch containing bandits. (map)
16-16 Deserted Mine — A medium-sized mine far east of Bravil containing bandits. (map)
16-16 Shattered Mine — A medium-sized mine north of Kvatch containing bandits. (map)
13-16 Rickety Mine — A medium-sized mine east of Cheydinhal containing bandits. (map)
Marauder
26-27 Rockmilk Cave — A medium-sized cave between Bravil and Leyawiin containing marauders and bandits (quest-related). (map)
20-20 Infested Mine — A medium-sized mine north of Kvatch containing marauders. (map)
12-19 
Fort Blueblood — A medium-sized fort southeast of Leyawiin containing marauders (quest-related). (map)
09-12 Fort Wooden Hand — A medium-sized fort between Chorrol and Skingrad containing marauders. (map)
08-08 Nornal — A large Ayleid ruin southwest of Cheydinhal containing marauders and undead (quest-related). (map)
07-11 Fort Alessia — A medium-sized fort southeast of the Imperial City containing marauders. (map)
Monster
22-37 Crayfish Cave — A large cave south of Cheydinhal containing monsters. (map)
21-21 Veyond — A large Ayleid ruin northeast of Leyawiin containing trolls. (map)
20-34 Bramblepoint Cave — A medium-sized cave east of Bravil containing monsters (quest-related). (map)
16-27 Moranda — A medium-sized Ayleid ruin between Chorrol and Bruma containing monsters (quest-related). (map)
15-15 Nonungalo — A medium-sized Ayleid ruin between Chorrol and Skingrad containing monsters. (map)
05-30 Arrowshaft Cavern — A medium-sized cave far east of Bravil containing animals and monsters. (map)
Necromancer
14-19 Kindred Cave — A medium-sized cave far east of Bravil containing necromancers. (map)
14-17 Fort Istirus — A medium-sized fort between Skingrad and Kvatch containing necromancers. (map)
14-16 Silorn — A medium-sized Ayleid ruin southeast of Skingrad containing necromancers (quest-related). (map)
12-22 Dark Fissure — A medium-sized cave southeast of Cheydinhal containing necromancers (quest-related). (map)
12-16 Fort Doublecross — A medium-sized fort northeast of Leyawiin containing necromancers. (map)
09-27 Lost Boy Cavern — A large cave far east of Bravil containing necromancers (quest-related). (map)
Vampire
11-11 Lipsand Tarn — A medium-sized Ayleid ruin north of Chorrol containing vampires. (map)
00-15 Memorial Cave — A small cave southeast of the Imperial City containing vampires (quest-related). (map)
NotesEdit
Bandits will have good loot if you want light armor.
Marauders will have the good loot if you want heavy armor.
Monsters will have bad loot on them, but monster dungeon chests have some of the best loot in game.
Necromancers will tend to wear robes and have daggers and staffs. (possibly enchanted)
Vampires will have a variations or loot. (depending on your level)
Rockmilk Cave 'number of occupants' are bandits and marauders added, there are 13-14 bandits and 13 marauders
In my opinion, if your looking for lots of money, do the mazoga the orc quests and head down to rockmilk cave, its best to get to lvl 10+ to get better loot here. If you dont want her to die, go a couple days before the dates she goes, info on that somewhere on site. The drops on Rockmilk cave are worth loads of money, so you can make lots by selling them to merchants. If you want to use this frequently, i would suggest getting a character with high levels of strength or you will be running back'n forth getting loot. This dungeon resets itself every 3 days 'normally' but i always wait 1 week before going back in. If you sleep or wait near or inside the dungeon. None of the enemy will respawn. so best to travel to a far away city to sleep. This can get you every house in the game in a short time. My current record is 3 real days from having no houses to having all.