NNN vs Gross Lease vs Modified Gross: Choosing Your MedSpa or Private Practice Lease
Opening a private healthcare clinic, MedSpa, or physical therapy practice is exciting. But before you stock your exam rooms with diagnostic tools or bring in that aesthetic laser, you need a space. Commercial leases for medical offices are tricky. A 1,500 square foot space quoted at '$30/sq ft' can cost you thousands more each month depending on if it's a NNN, gross, or modified gross lease. Knowing these differences *before* you sign is crucial to keeping your practice's overhead under control and profitable.
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The Quick Answer
For your new MedSpa or functional medicine practice, a gross lease means one simple rent payment. The landlord pays for things like property taxes, building insurance, and general upkeep. A NNN (triple net) lease is very common for medical office parks or strip centers where private practices often set up. Here, you pay your base rent *plus* your share of the property taxes (N), building insurance (N), and common area maintenance (N). These extra "NNN" costs can easily add 30-50% to your quoted base rent, turning a $5,000 base rent into a $6,500-$7,500 total. A modified gross lease mixes these, with expenses split by what you agree on. Always figure out the total monthly cost, not just the base rent, for your clinic.
Side-by-Side Breakdown
Gross lease: You pay one fixed rent number. The landlord covers taxes, building insurance, and most building repairs. This is common in multi-tenant medical office buildings or older office spaces. It's predictable, making it easier to budget for your physical therapy clinic or MedSpa. The base rent will seem higher, but there are fewer surprises.
NNN (Triple Net) lease: You pay base rent *plus* your share of the property taxes, building insurance, and Common Area Maintenance (CAM). This is standard in newer medical office parks, retail strip centers, or standalone buildings often rented by functional medicine doctors or nurse practitioners. While the base rent looks lower, those extra NNN charges can add $5-$15 per square foot per year to your costs. For a 2,000 sq ft space, that's an extra $10,000-$30,000 annually. CAM costs can also jump unexpectedly if a major repair is needed, like a new roof for the building.
Modified Gross lease: You and the landlord split the expenses. Often, you'll pay your base rent plus utilities (electricity, water for your exam rooms) and janitorial services (cleaning your clinic), while the landlord handles taxes and insurance. This lease type is common for smaller practices, offering more flexibility. Always get a clear list of who pays for what before agreeing.
What to Negotiate in a NNN Lease
CAM Cap: Your share of Common Area Maintenance (CAM) can rise. Ask for a cap, like a 3-5% increase limit per year. This stops huge jumps in costs if the landlord decides on a big project, like repaving the parking lot for the medical park.
Exclusivity Clause: Crucial for MedSpas and niche clinics. This stops the landlord from renting to another MedSpa offering the same exact services, or another functional medicine doctor, in the same building or center. Protect your patient base.
Tenant Improvement Allowance (TIA): Building out a medical space is expensive. You'll need specialized plumbing for sinks in exam rooms, upgraded electrical for aesthetic lasers or diagnostic equipment, and specific flooring. Negotiate for the landlord to give you money (TIA) toward these build-out costs, perhaps $30-$60 per square foot. This can save you tens of thousands on your initial setup.
Personal Guarantee Limits: As a new practice, limit how much you are personally responsible for. Try to cap your personal guarantee to 6-12 months of rent instead of the full 3-5 year lease.
Rent Abatement: Ask for 1-3 months of free rent while you build out your exam rooms, install equipment like a Hyperbaric Oxygen Chamber or aesthetic devices, get permits, and start marketing your services before you open. This grace period is vital for new practices.
Co-tenancy Clause: If your MedSpa relies on traffic from a popular gym or chiropractor in the same complex, ask for a clause that reduces your rent if that key tenant leaves.
Red Flags in a Commercial Lease
No CAM Cap: Unlimited Common Area Maintenance charges. This means you could be hit with huge bills for unexpected repairs to the building, like a new HVAC system for the entire medical complex, severely impacting your MedSpa's profits.
Relocation Clauses: A clause that lets the landlord move your practice to a different unit in the building. Moving a clinic means re-permitting, re-installing specialized equipment, and disrupting patient flow – a huge and costly headache for any healthcare provider.
No Exclusivity Provision: If the landlord can lease to your direct competitor (e.g., another physical therapist or MedSpa offering similar services) right next door, it will hurt your business.
Full Lease Term Personal Guarantee: If your private practice fails, you could be on the hook for years of rent. Try to limit this to a few months.
Radius Restriction Clauses: These can prevent you from opening a second clinic or satellite office within a certain mile radius of your current location. This limits your growth strategy as a functional medicine doctor or nurse practitioner.
Tight Assignment Restrictions: If you ever want to sell your MedSpa or private practice, these clauses can make it very hard or even impossible without the landlord's complete control and approval. This can impact the value of your business.
The Verdict
For a new physical therapy clinic or MedSpa, a gross lease offers predictable costs, which is a big plus for budgeting. If a NNN lease is your only option, especially in newer medical parks, it's not a deal-breaker. However, the fine print is critical. Hidden costs in NNN leases can quickly eat into your profits, especially when you're managing equipment leases for aesthetic devices or EMR systems. Never sign a commercial lease for your private practice without a commercial real estate attorney's review. A $750-$1,500 legal fee to protect your business is far less than a $75,000 mistake on a bad lease.
How to Get Started
1. Search Specifics: Look for medical office spaces on sites like LoopNet, CoStar, or local commercial real estate broker listings. Pay close attention to the lease type and if the space is already "medical build-out ready" (plumbing for sinks, appropriate electrical for medical equipment).
2. Request Documents: For any space your MedSpa or clinic is serious about, ask for the full lease document, and importantly, the last 3 years of CAM reconciliation history (if NNN or modified gross). This shows how much those extra costs have actually been.
3. Calculate True Costs: Don't just look at base rent. For your private practice, calculate your total monthly cost: base rent + estimated CAM (with buffer) + utilities (lights for exam rooms, water for sterilization) + your own practice's liability insurance.
4. Legal Review is a Must: Before you put your name on anything, have a commercial real estate attorney review the lease. They understand the specific needs and pitfalls for medical practices. A local commercial attorney is often better than generic online services for complex medical leases.
5. Always Negotiate: Even if it's a tight market, push for at least one major concession for your new clinic: a Tenant Improvement Allowance (TIA) for your build-out, 1-3 months of free rent (abatement), or a cap on annual CAM increases.
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Rocket Lawyer
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LiquidSpace
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FREQUENTLY ASKED QUESTIONS
What does 'per square foot' mean in commercial leasing?
Commercial rent is quoted annually per square foot. A 1,000 sq ft space at $24/sq ft per year costs $2,000/month in base rent ($24,000 / 12). In NNN leases, the quoted rate is base rent only — add CAM, taxes, and insurance on top.
How long should my first commercial lease be?
Aim for the shortest initial term the landlord will accept — typically 1–3 years for a new business. Longer terms (5–10 years) give you better rent rates and more leverage for TIA, but they also expose you to more risk if your business changes or the location underperforms.
Is a personal guarantee required for a commercial lease?
In most cases for a new business without an established credit history, yes. Landlords require a personal guarantee because an LLC without assets provides little security. Try to negotiate the guarantee down to 6–12 months of rent rather than the full lease term.
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