Thieves Guild HQ – Unhealthy Competition created by Punk Stevo, released in 2010 and last updated in 2011, adds a new player home along with a post-thieves guild quest line. This mod requires the Shivering Isles expansion and for the player to have completed the original Thieves Guild quest line.
Adal Matar the Lost Stronghold – Fight Against the Thalmor I (that’s a really long title) is an unmarked adventure by MadFrenchie. It is part of his/her “fight against the Thalmor” series available on both Skyrim Nexus and the Steam Workshop. I say the quest is unmarked since the mod’s focus is on the journey to reach the lost Orc stronghold. Since it is unmarked, you must find the hidden Thalmor camp and reach the stronghold by yourself by your own means.
The Grytewake Legend is a quest/player owned home by wallice. There are two ways to start this quest. One way is to find a scholar’s journal in the “Winking Skeever” or finding the nordic ruin associated with this mod, the quest will automatically kick in when you are far enough in the ruins.
Hoarfrost Castle is a castle that can be gained and later fully staffed through quests given to you by the steward of Hoarfrost Castle. There are a total of seven quests to complete to bring the castle to its full glory. However, this castle seems to mess with the Sidri-Ashak rune stone near to its site. When I fast-traveled to the rune stone, I ended up being inside of the castle, like literally inside the castle keep. Seeing through walls and all that. So avoid fast traveling to the rune stone, I am not sure if it does anything to the Underpall cave since that is also awfully close to its location. Just keep that in mind, when playing this mod and considering fast-travel. A safe bet would be to fast travel to Bruma or one of the caves nearby and go from there.
Uncle Cross Hideout is a player-home mod made by Cross1492 (aka Uncle Cross on the nexusmods.com). However, it does not just add a new player home to the world (correction: the hideaway has its own world-space) of Oblivion, it incorporates several other mods along with it in the form of addons and/or updates. This is probably the largest mod that I have ever installed for Oblivion. Even despite being split into several files for downloading, I took about 3 days total to download everything (including the addons).