Free Lease Addendum Templates (Word)
Lease
by oonakivisto
When a rental's terms change mid-lease, a lease addendum records the update without rewriting the whole agreement. This collection of 41 templates helps landlords and tenants add pet clauses, extensions, occupant changes, and new rules to an existing lease in a clean, official way.
Each addendum is editable in Microsoft Word, ready for the change, the date, and both signatures. Attach it to the original lease and keep copies for everyone involved. Landlord-tenant rules vary by state, so confirm local requirements before you rely on one. Download the template that fits your change and keep the lease current.
When to use this Lease Addendum template
- A landlord who wants to add a pet allowance clause to an existing residential lease after a tenant requests approval, ensuring both parties agree to new rules in writing before the pet moves in.
- A commercial property owner needs to extend a tenant’s lease by three months while renegotiating a minor rent increase, and wants a formal but quick amendment to avoid drafting a full new lease.
- A tenant moving out early must request permission to sublet their unit, and the landlord wants to document the subletter’s name, move-in date, and any adjusted security deposit terms without altering the original lease.
- A property manager handling a multi-unit building needs to update all leases with a new late fee policy after a state law change, and wants a single, reusable template to attach to each existing lease.
Which format should I download?
All 41 addendum templates in this collection are available in Microsoft Word only. This format is ideal because it allows easy customization—like inserting specific dates, names, or revised terms—while maintaining a professional layout. Word’s compatibility ensures the document can be shared, printed, or signed digitally without formatting issues, meeting the needs of both landlords and tenants who may not use specialized legal software.
Choose from 41 Lease Addendum Templates
How to use this Lease Addendum template
Can I use these addendums to change the base rent amount in a lease?
Yes, but with caution. These templates are designed to modify specific clauses—like adding a pet fee or extending a lease—rather than overhauling the entire agreement. For significant rent adjustments, consult a lease attorney to ensure compliance with local laws and to draft language that protects both parties’ interests properly.
Do I need to have the original lease on hand when filling out an addendum?
Yes, always. Addendums reference the original lease by date and parties, so you’ll need it to confirm details like the lease term, tenant names, and property address. This ensures the addendum is legally tied to the correct agreement and avoids confusion if disputes arise later.
What should I do if my tenant refuses to sign the addendum?
If a tenant refuses to sign, the addendum cannot legally modify the lease. Document the refusal in writing (email or letter) and consult your lease agreement or a legal professional to determine next steps—such as whether the original lease terms remain in full force or if further negotiation is possible.
Comments
Join the conversation
Sign in to share your thoughts and leave a comment on this resource.