Just closed on first property, problem tenant

[Matt Blutowski]

I closed on my first duplex this week. Both units are filled and I have the leases.

One of the tenants was a real jerk when we did a final walkthrough, and I have witnessed on several occasions that there are two people living in the apartment and 1 small dog, although the lease states an occupancy of 1 with NO dog.

I don't want an immediate problem, and would prefer to avoid immediately having to deal with an eviction. Another alternative is to ask him to sign a new lease, with pet addendum and additional monthly fee. If they disagree, then I'll consider eviction.

Any advice?