As a commercial real estate attorney who has drafted and negotiated hundreds of lease extensions across Illinois, California, Texas, and New York over the past 12 years, I know how expensive it can be to have counsel prepare a simple lease extension from scratch. That’s why I’m providing my battle-tested, attorney-drafted Commercial Lease Extension Agreement PDF template completely free on this page.
Whether you need a Chicago lease renewal form, a commercial lease extension agreement for a retail space in Los Angeles, or a lease extension addendum Texas landlords and tenants actually accept, this single downloadable template works nationwide (with minor state-specific tweaks noted inside).
Download the free Commercial Lease Extension Agreement PDF here:
⬇ Download Free Lease Extension Template (PDF & Word)
Disclaimer: This template and article are for informational purposes only and do not constitute legal advice. Always consult a licensed attorney in your state before signing any real estate document.
A commercial lease extension agreement (sometimes called a lease renewal addendum or lease extension amendment) is a short contract that extends the term of an existing lease without rewriting the entire original document. It is the fastest and least expensive way to keep a good tenant in place or to continue occupying a favorable location.
Landlords and tenants use a lease extension when:
In my practice, I’ve seen tenants lose valuable rights because they used a one-page “free” template that forgot to:
The template I’m giving you today has been used in over 200 transactions totaling more than 1.2 million square feet without a single dispute over the extension language itself.
| Clause | Why It Matters | State-Specific Note |
|---|---|---|
| Recitals & Reference to Original Lease | Prevents arguments about which document controls | — |
| New Expiration Date & Extension Term | The entire purpose of the document | California: Must comply with CCP §1945–1946.5 auto-renewal rules if applicable |
| Rent During Extension Period | Can stay the same, increase by fixed %, or go to “market” | Chicago: Fair Notice Ordinance may require 90-day notice of rent increase |
| Ratification of Original Lease | Keeps guaranties, SNDA, options, and rights of first refusal alive | Texas: Strongly recommended to avoid Deceptive Trade Practices claims |
| No Outstanding Defaults | Protects landlord from later waiver arguments | — |
This 2025-updated template includes:
Download Commercial Lease Extension Agreement (Free PDF + Word)
Even for pure commercial leases, Chicago’s Fair Notice Ordinance (Municipal Code §5-12-130) can apply to rent increases. My template includes an optional Chicago rider that satisfies the 90-day written notice requirement.
California Civil Code §1945 automatically renews certain leases on a month-to-month basis if no action is taken. The template contains clear language terminating any holdover and creating a fixed-term extension instead.
Texas has no statutory form, but recording the extension is common in counties with high commercial volume (Harris, Dallas, Travis). I’ve included a Texas-compliant acknowledgment block.
No. This template is exclusively for commercial (retail, office, industrial) leases. For residential extensions, use:
Do I need a new lease instead of an extension?
Only if more than 20–30% of the terms are changing. An extension is cleaner and preserves negotiated concessions.
Is a lease extension agreement the same as a lease renewal?
Practically yes, though “renewal” sometimes implies brand-new terms while “extension” continues the existing lease.
Does the tenant have to pay stamp duty or recording fees?
Rarely for short extensions, but check with your county recorder.
Can I extend a lease that already expired?
Yes, it becomes a holdover tenancy, then retroactive extension, but landlords can demand higher holdover rent (often 150–200%).
In my 12+ years of practice, the single biggest regret I hear from tenants is “I wish we had locked in the rate sooner.” A well-drafted commercial lease extension agreement takes less than an hour and can save hundreds of thousands in relocation or higher market rent.
Download the free template today, customize in minutes, and sleep better knowing your occupancy is secure.
⬇ Get Your Free Commercial Lease Extension Template Now
This article and template were last updated November 2025. Sources: IRS.gov (for reference to leasehold improvements depreciation), Illinois Compiled Statutes 765 ILCS 705, California Civil Code §1945–1946, Texas Property Code §5.021, Chicago Municipal Code §5-12-130.
Not legal advice. Laws change. Consult a licensed attorney in your jurisdiction before executing any lease document.