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Lease Extension Addendum | Sample

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Updated on March 20th, 2023

A lease extension addendum is a legal document extending a lease between a landlord and a tenant. It can also change conditions such as the rent amount, security deposit, utilities, and other provisions. If no changes are made other than the termination date, all other terms of the original lease will remain in place. Lease extension addendums can be used to lengthen both residential and commercial leases.


Extension Addendum vs. New Lease

If the parties to a residential or commercial lease agreement wish to extend the termination date, drafting an addendum to the original agreement is more practical than creating a new lease agreement.

Using an Extension Addendum

Either party can initiate the process of extending a lease agreement using an addendum. Tenants often draft extension addenda because they are satisfied with the property and rent amount. Landlords may want to continue the relationship because they know the tenant pays rent on time and is well-behaved, making it easier to extend the lease rather than find a new tenant.

The following steps can be followed to execute a lease extension addendum:

  1. The party initiating the lease extension should review the original lease agreement before proposing any new terms.
  2. The addendum can be drafted with a new lease termination date, and any additional terms (such as rent increase/decrease) can be submitted for negotiation.
  3. The initiating party signs the document and delivers it to the other party.
  4. The landlord and tenant can negotiate the lease extension date (and added terms, if applicable) and, once agreed upon, the second party can sign and date the document.
  5. The addendum doesn’t need to be physically attached to the original lease, but both parties should retain a copy for their records.

Creating a New Lease

If the parties would like to enter into a new lease instead of signing a lease extension addendum, the landlord is required to do the following:

  1. Return the security deposit to the tenant (with a statement on any deductions);
  2. Provide a move-out inspection disclosure (if applicable);
  3. Draft and sign a new lease agreement;
  4. Provide the tenant with all required State disclosures; and
  5. Collect the updated security deposit and 1st month’s rent amount (if applicable).


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1. THE PARTIES. This Lease Addendum (“Addendum”), made effective as of [MM/DD/YYYY], is by and between:

 Landlord: [LANDLORD’S NAME] (“Landlord”) and

Tenant: [TENANT’S NAME] (“Tenant”).

The Landlord and Tenant are each referred to herein as a “Party” and, collectively, as the “Parties.”

2. ORIGINAL LEASE. This Addendum is being added to the lease agreement between the Parties, dated on [MM/DD/YYYY], for the property located at [RENTAL PROPERTY ADDRESS] (“Original Lease”).

3. EXTENSION. The Original Lease shall be extended with a new termination date of [MM/DD/YYYY] (the “Extension Term”).

4. OTHER CHANGES. In addition to the Extension Term, there shall be:

– The following changes: [INSERT ADDITIONAL TERMS]

– No other changes.

Except as specifically mentioned in this Addendum, all other terms and conditions of the Original Lease shall remain in full force and effect.

5. EXECUTION. This Addendum may be executed in counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

Landlord’s Signature: ___________________ Date: [MM/DD/YYYY]

Tenant’s Signature: ___________________ Date: [MM/DD/YYYY]
Print Name: [TENANT’S NAME]

Frequently Asked Questions

Can a lease extension addendum be applied to an expired lease?

Yes. if an addendum includes language that extends the length of a lease and it is consistent with the terms and conditions of the original agreement, it is functional and legally binding.

Can terms be added or modified to a lease using a lease extension addendum?

Yes. Aside from extending the lease term, an extension addendum can be used to modify current terms in the original lease or ad new terms and conditions such as different rent amount, payment method/schedule, maintenance responsibilities, utilities, etc.