Moving out of house with no lease

Mr. Waggoner is correct, leases must be in writing to be valid. The landlord can try to claim that you had some oral agreement obligating you to pay $250.00 when you moved out, but success on that claim will largely depend on what proof of that agreement the landlord can present. Merely the fact that you were living there and paying rent doesn't by itself imply additional terms of a valid lease. So, unless the landlord can present evidence, either in writing or with other witnesses that can confirm the agreement, then you should be fine.*

*This is not intended as legal advice but merely general legal information. This answer is not intended to create an attorney-client relationship, and no such relationship has been formed as a result of this communication.

There is little likelihood the landlord can do anything legally. Agreements pertainingg to the use of land, here the rooms/space you were using, are required to be in writing. If not, there is no legal agreement. However, if a verbal agreement were to be upheld, it will depend on what the landlord and you can get the judge to believe was the agreement. I think, that if you had no written agreement, you could leave anytime you want without notice and the landlord has no recourse.