If the tenancy agreement is set but one or both of the parties do not agree on certain provisions in the tenancy agreement, revisions are possible. In this scenario, both parties should be extremely careful that proper wording is included especially if both parties have no education on law whatsoever. Putting down simple thoughts and compromised policies may not transcribe to proper legal wording. There are however, straightforward alterations that both parties can change themselves. One example is the housing of pets in the property. Legally, it is advised that any alterations done in the agreement should be signed or initialed by both parties as proof that they both agree to the alterations before the actual policy takes place.