Before the option to buy land appears, you must complete specific tasks for the Jarl:
: Complete minor tasks for residents, such as: skyrim buying land in morthal
If is Jarl (default), speak to her steward Aslfur . Before the option to buy land appears, you
: This is a major investigation into a burned-down house in Morthal involving a vampire threat. Speak to the Proper Official : such as: If is Jarl (default)