Guarantor (co-signer) required for lease
A guarantor clause makes someone else — usually a parent — legally on the hook for your rent and damages if you default. Standard for students and first-time renters, but the guarantor's exposure should be capped and clearly written.
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What it actually means
A guarantor (also called a co-signer) signs a separate agreement promising to pay if you don't. It's how landlords accept tenants with no rental history, weak income, or a low credit score. The guarantor is not a tenant — they don't have the right to live there — but they can be sued for anything you owe.
The two versions to know: a 'guaranty of payment' covers only rent (better for the guarantor); a 'guaranty of performance' covers everything — rent, damages, attorney's fees, and any renewal you sign later without them signing again (worse). The guarantor's exposure should be explicitly capped at the current lease term, not roll forward into renewals.
What it looks like in a lease
"Guarantor hereby unconditionally guarantees the full and timely payment of all Rent, fees, damages, and attorney's fees owed by Tenant under this Lease and any renewal, extension, or modification hereof."
What to watch for
- 'Guaranty of payment' (narrow) vs. 'guaranty of performance' (broad)
- Whether the guaranty extends to renewals without a new signature — should not
- Whether the landlord has to try to collect from tenant first before going to guarantor
- Whether the guarantor is 'jointly and severally liable' with the tenant
- State-specific consumer credit rules on guaranties (some states require separate acknowledgment)
How to negotiate it
For the guarantor, ask for: (1) guaranty limited to the initial lease term (no auto-renewal); (2) landlord must first pursue tenant; (3) guarantor's liability capped at total rent under the initial term. This is standard in many markets.
When it crosses into a red flag
- Guaranty automatically covers renewals without re-signing
- No cap — guarantor liable for damages, attorney's fees, and future rent forever
- Waiver of notice — landlord doesn't have to tell the guarantor when the tenant is behind
- No requirement to exhaust remedies against tenant first
Frequently asked questions
Can my parent stop being a guarantor mid-lease?
Not unless the guaranty agreement lets them, and almost none do. Guaranties are one-way commitments through the lease term. That's why the auto-renewal question matters: without a cap, a parent who cosigns a 12-month lease can be on the hook for years of renewals.
Want to know how this works in your specific state? Read the Breaking a lease early guide, or pick your state from the guide index.
Related clauses
General information, not legal advice. Clauses are interpreted differently across states and courts. For a binding interpretation of your specific lease, consult a licensed attorney in your state.
