Battlehorn Castle, located west of Chorrol in Oblivion Remastered, can be acquired without spending any gold. Players must assist the castle's soldiers in defending against raiders to trigger a quest that grants ownership. Completing the quest and purchasing all upgrades, including the Dwemer Forge, fully restores the castle, providing a valuable early-game home base with storage, prestige, and unique questlines.
source https://timesofindia.indiatimes.com/sports/esports/news/how-to-find-and-get-battlehorn-castle-for-free-in-oblivion-remastered/articleshow/120651493.cms
source https://timesofindia.indiatimes.com/sports/esports/news/how-to-find-and-get-battlehorn-castle-for-free-in-oblivion-remastered/articleshow/120651493.cms