Legal Question in Landlord & Tenant Law in Texas

Re: Security deposits

In general, a landlord must either refund the security deposit or send an accounting of how the deposit has been applied within thirty days after a tenant moves out. There is no such requirement, however, if the tenant moves out while still owing rent. And, the thirty days does not start running until the landlord has been given, in writing, the tenant's new address. (filling out forwarding information at post office does not count)