Yes, if you have no plans to move in. You are in breach of contract. You are tied into the lease so the only way the landlord can legally re-rent the place would be to evict you, which allows the ll to re-rent it. Why did you rent a place you could not afford? Relying on others is always risky. What you can do is ask the ll if he will allow another roommate to rent with you. If he will, find a replacement and present that person to the ll for a background check, etc. If that person is accepted, your problem is solved. Otherwise, you are not entitled to any refund. In fact, you will probably end up owing rent for two or three months, until he finds another renter, and for court costs for the eviction.
Certified Paralegal, with 25+ years' experience & with Landlord & Tenant law experience.