Anyone moving in must get prior written consent of the Landlord prior to moving in.

(c) If the tenant remains in possession without the landlord's consent after expiration of the term of the rental agreement or its termination, the landlord may bring an action for possession.

If you're worried about the old one applying still, then put an additional clause in the new lease stating that you both consent to voiding the previous lease between X party and Y party, dated _____ and that this new one serves as the only legal agreement in place between you two. 

Pay close attention to "consent" "implied and specific" as well as the legal aspects of the duties owing to a principal by any agent.

It also requires more capital than folks anticipate.2) At the age of 16, there will be jurisdictions where you unable to legally enter into a contract (without the signed consent of a guardian).

Section 12 (which makes me wonder if a UCC filing is a type of conveyance)"This agreement is personal to Buyer herein, and no conveyance shall be made of Buyer of the premises herein described, or any part, or any beneficial interest thereof without first obtaining the prior written consent of the Seller. 

The letter couldn't be amended without both her and I's written consent.

Having said that, there is nothing to stop two arms length consenting parties from agreeing to arbitration / mediation (I define Mediation as a third party trying to bring the two sides together and Arbitration as agreeing to empower a third party to hear the two sides 'informally' and be bound by the arbitrators decision outside of the court system).

You will need the owner of the property's consent to do short term rentals.

I had a short sale went into contract but it's taking forever to close because the seller bank still has not provided the consent letter.