I know during the main quest line you can end the war and create an alliance, but I also know that the only way I personally was able to purchase Hjerim is to participate in the Civil War questline. I would rather not do this for role playing purposes, but I still want to buy the home. Before I proceed with the main quest, I would like to know if this is possible.
Bear in mind that I'm on PS4, so I can't use console commands. Thank you in advance!
Note: I've already completed the quest Blood on the Ice, and have helped enough people to become Thane if possible after the alliance is formed. I just need to know if buying Hjerim is possible since I can't find mention of it as an option.