AITA for kicking my uncle out of “his” house?

Family inheritances often come with strings attached, and sometimes those strings can get tangled in property disputes. I (23M) inherited my grandfather’s entire estate—including a house—from him, following his passing last year. Before he died, my grandma arranged for my uncle (50M, not biologically related to my grandfather) to rent the house under a 3‑year contract.
Now that the probate process is complete, the house is officially mine. When my uncle began unauthorized construction work and later proposed a lenient 5‑year contract, I refused, insisting on a fair arrangement. My grandma pressured me to accept his terms “because it’s family,” and when I stood my ground by having my lawyer draft a new contract, my uncle and grandma cut me off.
Despite family pressure to settle for a lower amount, I’m determined to have my uncle either pay the full $377K owed, sign my contract with strict conditions, or move out. Am I the asshole for enforcing these boundaries?
‘ AITA for kicking my uncle out of “his” house?’
Update here: https://aita.pics/vldcO
Dr. Laura Markham, a clinical psychologist specializing in family dynamics, explains, “Inheritance disputes can bring longstanding family tensions to the forefront. When it comes to property, clear financial boundaries are essential. Insisting on the agreed-upon terms, especially when previous arrangements were legally documented, is a reasonable stance to ensure fairness and protect your financial future.”
Dr. John Gottman, a relationship expert, adds, “Family pressures and emotional ties can complicate financial negotiations. However, if one party repeatedly violates the terms or tries to renegotiate them without consent, it’s necessary to enforce clear boundaries. Standing firm on contractual obligations—even if it means facing family estrangement—is a valid response to protect your interests.”
Both experts agree that while family bonds are important, they do not override legal agreements and financial responsibilities. Your insistence on honoring your grandfather’s stipulated terms reflects a commitment to fairness and financial responsibility.
Here’s what people had to say to OP:
Several redditors expressed support for your decision. One user commented, “If your uncle started making unauthorized changes and then proposed a deal that undermines your inheritance, you’re well within your rights to insist on the original terms. Family should respect legal agreements.” Another shared, “It sounds like you’re being pressured to let your uncle off the hook financially. You’re not the asshole for protecting your inheritance, even if it causes family drama.”