Commercial Lease Extension vs Renewal: The One Rule That Can Cost Your Practice.
- Jason Jackson

- 24 hours ago
- 9 min read
Two words in your lease decide whether your landlord can amend it or have you sign a brand-new lease. Most healthcare professionals can't tell them apart.
If you own a healthcare practice, sooner or later a commercial lease renewal, or an extension, will land on your to-do list. This article explains the difference in plain language: what each word means, where to find the answer in your own lease, and what to watch out for.

Lease Extension vs Lease Renewal: The Simple Definitions
A lease extension keeps your current lease going. Same lease, same rules, more time.
A lease renewal ends your current lease and starts a new one. New contract, and possibly new rules.
That's the core of it. An extension continues. A renewal replaces.
Now, one personal note. In real life, the line gets blurry. In my experience, most tenants just carry on under their old lease, even when the paperwork says Option to Renew. That's just what I've historically seen. But legally speaking, the difference is real, and later in this article you'll see exactly when it can cost you.
The One Rule That Governs Every Commercial Real Estate Lease
Here's the most important sentence in this article: every lease is different. There is no such thing as a standard commercial real estate lease. That's a fact, and here's why.
Your lease was written by a specific landlord. Landlords are not all the same. Some are publicly traded companies, some are institutional, and some are private. Each one drafts and negotiates differently. Likewise, it was signed by a specific tenant. Different business owners come to the table with different agendas and different sensitivities.
Your lease was completed at a specific time, meaning it was executed under specific market conditions. These variables include:

Fluctuating vacancy rates (high or low)

Location quality (a superior location versus a weak location)

Supply and demand cycles moving one way or the other
All these factors play into how a lease gets finalized. On top of that, landlords and tenants use different lawyers, and every lawyer drafts differently.
I see this misunderstanding a lot in the healthcare community. Dentists, doctors, and vets work in a world built on standardization, so the assumption is that everything has standards. Lawyers operate in a similar environment because that's how the law works.
Commercial real estate is different. We're all working inside the commercial real estate market, and that's what makes it unique, challenging, emotional, and a bit of the Wild Wild West. Because clinic owners assume everything is standardized, they often accept lease terms they don't actually have to. They believe it is "just the standard." There is no standard.
Why Every Commercial Real Estate Lease is Different
Now, to be clear, there are definitions, and there is real estate law. That's true. But the law doesn't dictate the business terms of the commercial lease. The two parties do. When a landlord and a tenant mutually agree to something, anything, the lawyer's job is to bind that agreement to the law, drafting it so it holds up in court if it's ever tested. The terms of the lease agreement itself come from the commercial real estate market: what one party asks for, and what the other party will bear.
That's why a good commercial real estate adviser matters. I'll often draft offers with terms and structures people have never heard of. And because I advise clients in cities across the United States and Canada, I see far more variety than a local adviser ever will. It's not my job to make it hold up in court. That's the lawyer's job. My job is to test the market, to test what the other party will bear. Two parties can agree to anything they mutually agree to, and that's why every single lease is different.
That means your answers are not in this article. They're in your lease. This article tells you what to look for.
Where to Look: Your Option Clause
Somewhere in your lease there's a section about extending or renewing. It's usually called an option to extend or option to renew clause.
An option is your right to stay in your space for another term after the current one ends. For example, "two options of five years each" means you have two options to stay, five years at a time.
Four Facts in Every Option to Extend or Option to Renew
A typical option clause spells out four things.
How many options you have.
How long each new term runs.
When to provide notice to your landlord.
How the new rent is determined.
Some clauses also limit what you can ask for. An inducement is a perk a landlord gives a tenant, like a few months of free rent or money toward your tenant improvements. Your clause might say you can't ask for any inducements. It might also say the new rent can't be lower than last year's rent.
The Lease Renewal Sentence That Should Worry You
Here's where extension versus renewal stops being trivia.
A renewal clause may say the landlord can introduce a new lease, or make amendments, which are changes to the lease that does not require the other party to agree. Hopefully it says both parties have that right, but it will likely say just the landlord.
An extension clause should never say that. An extension is simply your original lease, continued. It should never change, unless both parties agree to amend the original lease.
So, the ideal setup, if you can get it, is a lease extension clause. Nothing new comes in, from either side.
And if your lease says option to renew? You're not up the creek without a paddle. Practically speaking, a renewal can work just like an extension, as long as the clause doesn't let the landlord bring in a new lease or new language. Read yours and check for that sentence.
One trick to watch for. At renewal time, some landlords send a proposal with sneaky lease amendments and say: “this is what everyone is agreeing to”. Remember the rule above. There's no such thing as a standard lease. If your clause doesn't give them that right, the answer is simple. No. You can't just do that.
If you find this clause sitting in your lease right now, don't panic. Our team reviews and negotiates these exact vulnerabilities every day to ensure practice owners aren't left exposed.

What Is a Lease Addendum, and Do I Have to Sign It?
A lease addendum is a document that adds new terms to your existing lease or changes the ones already in it. When a landlord wants to introduce new terms at renewal, this is usually how they arrive. Check your clause. That's always the answer.
If your clause doesn't allow new terms, and the landlord introduces some anyway, you have three choices. Accept them. Say no. Or counter with terms of your own.
There's also a quiet fourth choice: do nothing, and keep the lease you already have. Sometimes that's your strongest move, and your clause gives it to you for free.
But know this before you ask for anything extra. Your clause only protects what's written in it. The moment you ask for something beyond it, like an extra option, you're inviting the landlord to negotiate. And if they accept that invitation, the whole lease agreement can open up, and they can ask for things too. That can still be the right move. That's business. Just walk in with a strategy, not just a wish.
One exception cuts the other way. If your clause gives the landlord the right to amend the lease or introduce a new lease without your approval, then they have that right. Again: it all comes back to how your lease is written.
How to Negotiate a Commercial Lease Renewal
The short answer is you need leverage. Leverage just means bargaining power. For a tenant, it usually comes from two places.
The first is patience. If your landlord requests changes to your lease, that is the perfect time to ask for something in return. They don't technically have to listen, but they are suddenly very interested in listening because they need something from you.
The second is the market around you. If there's a lot of empty space nearby, your landlord can't easily replace you, and that pressure can matter more than the words on the page. We're in the market, not in the courtroom.
Lease Renewal Vs. Lease Extension

Extension - Original Lease Continues (Pink): One seamless timeline. It is a direct continuation of your original lease, and the landlord cannot change a single word in your contract.
Renewal - Original Lease Continues (Green): Legally a new contract (the break), but you keep your original lease terms with no new landlord rules.
Renewal - New or Amended Lease (Blue to Orange): Starts as your original lease (blue), but the landlord forces you onto a brand-new lease agreement or amended your original lease with new terms (orange).
What You Should Do
Find the option clause in your lease.
Check which word it uses: extension or renewal.
If it says renewal, look for the dangerous sentence: can the landlord, introduce new terms or a new lease?
Note what's open to negotiate. Often it's only the rent.
Note what's restricted: bans on inducements, or a floor under the rent.
Check when you need to deliver notice.
Before you act on any of it, have someone who does this every day read it with you.
The Bottom Line
Lease clauses are designed to read confusing. And sometimes landlords will tell you things that aren't necessarily true.
Maybe a lawyer finalized your lease and you didn't understand every page when you signed. That's totally reasonable. Maybe you bought a practice and the lease came with it. Also totally reasonable. You were busy running a business.
So have your lease reviewed before you act. A lawyer can do that, and plenty do. But here's my personal opinion: a lawyer is the wrong tool for negotiating a renewal or extension. To me, that's like asking a dentist to work on a dog. They might know teeth, but they don't know animals. A lawyer knows the contract, but they don't know the market. They're different animals.
A lawyer's strength is the courtroom. A lease extension or renewal happens in the commercial real estate market, and the marketplace is what we understand: leverage, market dynamics, different asset classes, different landlord types, and how they're all set up. We don't need to be in a market to understand it. It's not like the law, where every state, province, country, and municipality has different rules and regulations. Markets follow supply cycles, and real estate works on leverage, not judge or jury.
Watch what happens when a lawyer handles a lease extension or renewal. The first question is usually "is there anything in here you want changed?" That's an invitation to open up the lease agreement. Sometimes it's inexperience, because they don't know market leverage. Sometimes it's because an open contract means negotiations, which lead to a bigger bill. Either way, you will very rarely hear a lawyer recommend the quiet fourth choice from earlier in this article: do nothing. We will, because sometimes waiting is your strongest position, and because every healthcare practice has a different agenda and different goals.
Our approach starts with your practice itself. We talk through your plans, what your lease currently says, and we build a strategy of high priority and low priority items, ready for if and when your landlord comes asking for lease amendments.
Now, this is about the right tool for the job. If your landlord introduces new clauses, or a new lease, then yes, have a lawyer review that language if necessary. That's a far cheaper bill than having a lawyer negotiate for you in the marketplace.
So remember where we started. Every lease is different. An extension continues your lease and nothing should change. A renewal can replace it, if the clause allows that. Which one you have is sitting in your lease right now.
Go read your lease clause this week, before anyone asks you to sign anything. If you want an expert who reads and negotiates commercial real estate leases every day to tell you exactly what yours allows, call Attridge Group. That’s the work we do for healthcare practices across the US and Canada.
Common Questions About Commercial Lease Renewal
Is a lease renewal a new lease?
Legally speaking, yes: a renewal creates a new contract, while an extension continues your existing lease. In practice, many tenants carry on under the old or original lease anyway, so the wording of your clause is what decides.
Can a landlord change terms at a lease renewal?
Yes if your option to renew clause allows it. Some renewal clauses let the landlord introduce a new lease or lease amendments; if yours doesn't, it's very difficult for them to argue for changes.
Is a lease extension better than a lease renewal?
Yes, because an extension continues your lease exactly as written, so nothing new can come in. A renewal can work just as well if its language doesn't let either party introduce a new lease or new terms, but fundamentally the lease extension is superior.
What should I do before signing a commercial lease renewal?
Find your option clause, check whether it says extension or renewal, and know exactly what it actually allows. Then, bring in an expert to review the landlord’s offer before you sign away your leverage.
