My question involves landlord-tenant law in the State of: Texas
Hello, all. I have a question regarding a landlord's ability to require tenants to sign additional documents after the original lease agreement has been executed. After noticing some charges on my monthly billing statement (rent and utilities), I decided to ask some questions. As it turns out, my landlord is charging tenants for a utility that I don't believe is allowed under the terms of the lease. The agreement specifically states that if a utility is billed based on an allocation formula, the formula and additional information are required to be included as an addendum to the lease. However, this addendum was not part of the lease agreement that I signed, and the landlord has acknowledged that.
Now I am being asked to sign the addendum that was required to be included in the original lease agreement. Do I have to sign it? I'm also not sure what to do about these charges I am receiving that are not allowed based on the omission of the aforementioned addendum. If anyone could shed some light on this I would be very appreciative. Thank you!

