Help - NSF Security Deposit (not deposited)

[Krisitna L.]

I just started the renting process for an office yesterday and was told that the deposit check was written from the wrong account.  The tenant signed the lease, but not the owner.   The check has not been cashed and I'm asking for a money order.  Considering the circumstances, is this considered a valid lease?   The check has not been cashed and the lease has not been signed.    Unfortunately, they do have the keys to the office.  We did run a background and credit check and the person came up with an A rating.  

Based on other BP reviews, most landlord do not accept personal checks.  After 10 years, this is actually the first incident.  Unfortunately, it looks like I'll have to ask for money orders now.   Your input would be appreciated.