August 5, 2025

Anexo al Contrato de Arrendamiento – Download Template for Every State

Lease Agreement Addendum: Purpose, Use, and Why You Need One [Download Template for Every State]

Are you looking to update or modify an existing lease agreement with new terms? A Lease Agreement Addendum (or Lease Addendum) is an important legal document used to change, clarify, or add provisions to a lease contract without the need to create an entirely new agreement.

What Is a Lease Agreement Addendum?

A lease addendum is a supplemental document that modifies, expands, or adjusts the terms agreed upon in an original lease. It allows landlords and tenants to consensually add new clauses or change existing ones, such as extending the lease duration, adjusting rent amounts, including pet policies, or updating maintenance responsibilities. This document becomes part of the original lease and must be signed by both parties to be legally effective.

Why Use a Lease Agreement Addendum?

A lease addendum offers several key benefits:

  • Enables formal modifications to the lease terms without rewriting the entire contract.
  • Keeps the original lease valid while reflecting updated or new conditions.
  • Avoids confusion by clearly documenting agreed changes.
  • Protects both landlord and tenant by ensuring mutual consent for modifications.

When Should You Use a Lease Agreement Addendum?

Use a lease addendum whenever both landlord and tenant agree to modify terms such as rent, lease length, pet permissions, assigned repairs, or other conditions during the lease period. It is especially useful if changes arise after the original lease has been signed, avoiding the complexity of drafting a new lease.

Use the Correct Lease Addendum Template for Your State

Landlord-tenant laws vary across states, so it’s critical to use a lease addendum template tailored to your state's legal requirements. This ensures that modifications are enforceable and compliant with local regulations.

Download Your State-Specific Lease Agreement Addendum Template

At LawPassport.com, you can quickly sign up to access customizable Lease Agreement Addendum templates designed for every state. Our professionally drafted templates comply with state-specific landlord-tenant laws, helping you make valid and effective changes to your existing lease agreement.
Keep your lease agreements clear and legally sound!
👉 Sign up at LawPassport.com to download the appropriate Lease Agreement Addendum template for your state easily and securely.
Don't risk confusion or disputes by leaving lease modifications undocumented. Download your tailored addendum template today to ensure all terms are clearly agreed upon and legally protected.