Is there anything I can do about a roommate who is breaking their lease without notice?
Question Details: I am 1 of the tenants under the current lease at a 2 bed 2 bath condo. My roommate moved out without prior notice to me or the owner. This was 2 1/2 months prior to the expiration date of the lease, which is the end of this month. They did this without paying for their half of the bills and rent for the remainder of the lease. I have proof we have split every bill since living together, as well as their denying requests of payment for bills I have sent. Their furniture was also abandoned along with their pet. I've been forced to make up for their part of the bills with no prior notice and little time before due dates. Is there something that I can do?
Yes, you can sue your former roommate for her share of the rent, assuming she was on the lease. A lease is a contract: it binds all parties to it, and any party may enforce it against any other party who breaches it. If you and your roommate were both on the lease, you were both liable for the rent; therefore, you could sue her for breaching or violating the lease (her agreement to pay) for her share.
However, as to utility and similar bills, unless there was a contractual agreement that she'd keep paing them for the remainder of your rental, she is not liable for them after she moved out, since she is no longer using the utilities or incurring any of those costs. You could sue her for any unpaid portions of the bills up to when she moved, since she used those utilities, etc. and therefore is resonsible for her share of the cost.