Leased signed is it a done deal

I signed a lease with my new landlord to be on April 22nd. The move in date specified on the lease is June 1st. Post dated checks were provided for 4 months in advance and as of 2 days ago we were still in agreement on the rental. This morning I awoke to an e-mail stating she no longer wishes to rent me her home. Is this legal or was the singing of the lease a done deal.

[OHlandlord]

Normally, once a lease is signed it is a "done deal" as you put it. A lease is a legal contract. Unless it was written with a contingency clause (something to the effect that she can cancel the lease if some condition is not met or satisfied), it should stand.

I am curious as to why she now doesn't want to rent to you. Did she state a reason? Had you already passed the screening process (credit report, background checks, prior LL refernce checks, etc.)?

You could sue to enforce the lease, but would you really want to live with someone who didn't want you there? She'd just make your life miserable. Your best outcome would be a complete and immediate refund of any monies paid to her (or your checks returned to you), and a letter from her releasing you from any obligations under that lease. You could sue for rent above what you would have paid her if you can't get a place with the same rent level (for a comparable unit) or any overage charges on your current place if you are forced to hold over because she broke the agreement. These would really depend on how tenant friendly your state is though. In my state, it would be difficult for you to get these.