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California Guarantor / Co-Signer Addendum
Add a guarantor or co-signer to a California residential lease. The guarantor promises the tenant’s rent and other lease duties. This paper does not make the guarantor a tenant and does not rewrite Cal. Civ. Code § 1950.5 (AB 12, effective July 1, 2024).
- Landlord, tenant, and guarantor should all sign.
- The guarantor is not an occupant unless named on the lease.
- Deposit-return rules still bind the landlord (21 days).
Related California documents
- California Residential Lease Agreement. A fixed-term residential rental contract built around the property’s state rules.
- California Month-to-Month Rental Agreement. A periodic tenancy that continues until either party gives proper notice.
- California Pet Addendum. An add-on to an existing lease that names the animals, pet deposit or rent, and care rules. Assistance animals are not pets.
- California Notice of Rent Increase. Written notice that rent will change on a stated date. It is not an eviction and not a substitute for a signed amendment or renewal.
- California Lease Amendment. A short writing that changes named terms of an existing residential lease.