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Additional Tenant Lease Addendum Form

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Updated on April 10th, 2023

An additional tenant lease addendum is a document that adds a tenant to an existing rental agreement. The form allows the new tenant to occupy the property for the rest of the lease term. The addendum will relay that, during this time, they’ll share equal responsibility with the other tenants to pay rent, maintain the property’s condition, and uphold all other obligations required by the original lease. The addendum will typically specify when the new tenant will move in and whether they’ll be required to pay a security deposit.


Download: PDFWord (.docx)OpenDocument


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

Landlord[LANDLORD NAME] (“Landlord”) and

Current Tenant: [CURRENT TENANT NAME] (“Current Tenant”).

The Landlord and Current 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. NEW TENANT. The Parties hereby acknowledge and agree that [NEW TENANT NAME] (“New Tenant”) will be moving into the rental property on [DATE OF MOVE-IN] and shall become a tenant under the terms and conditions set forth in the Original Lease. The New Tenant acknowledges receipt of the Original Lease and all addendums and attachments thereto.

4. SECURITY DEPOSIT. The New Tenant is [WRITE “required” OR “not required”] to pay the Landlord a security deposit. If required, the amount of the deposit shall be $[DESPOIT AMOUNT].

If a security deposit is not required, delete the sentence beginning with “If required” above.

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

6. 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 Signature: ___________________ Date: [MM/DD/YYYY]

Current Tenant Signature: ___________________ Date: [MM/DD/YYYY]

New Tenant Signature: ___________________ Date: [MM/DD/YYYY]

Frequently Asked Questions

What's a "joint and several liability" clause?

A joint and several liability clause is a legal provision included in the addendum that holds the tenants responsible for paying rent as a group (jointly) and individually (severally). This means that if either tenant fails to pay their share, the other could be held responsible for covering the unpaid amount in order to avoid late fees and eviction.

Can landlords ask new tenants to pay a security deposit?

Yes. Landlords can ask new tenants to pay a security deposit to cover potential property damage or unpaid rent. Deposit amounts generally range from one to two months’ rent. However, landlords should always review the laws in their state to determine the maximum chargeable amount (Security Deposit Laws).