Renewing a New Lease with A Tenant or Create an Addendum?

[Ralph Miller]

I purchased a property that was tenant-occupied.  The property was previously managed by a management company that I decided not to use because I decided to manage the property myself.

The tenant's lease is expiring in a few months and he wants to renew it.  I told him I will keep all the same terms as he had with the property management company.

 Should I create a whole new lease or can I create some sort of addendum that says "Following all terms from the [previous lease agreement], I hereby affirm to resign a lease from __________ to _________."  Obviously, not that those exact words but basically just using an addendum that's like one page long.  OR should I just rewrite a whole new lease with the same terms?

Thanks for the input!