5 Commercial Lease Clauses That Cost Tenants the Most Money
April 9, 2026 · 11 min read · By LeaseLens
Most commercial leases are 30–80 pages long. Buried inside them are a handful of clauses that account for the majority of tenant losses — provisions that seem boilerplate at signing but become devastating when business conditions change.
We've reviewed hundreds of commercial leases. These are the five clauses that come up again and again — the ones that catch tenants off guard, drain cash flow, and sometimes force businesses to close.
Each section below shows you what the dangerous language looks like, a worked dollar example, and exactly what to ask for instead.
In this article
- Uncapped CAM charges
- Full-term personal guarantee
- Holdover rent at 200%
- No early termination right
- Open FMV renewal option
- FAQ
CLAUSE #1 · HIGH RISK
Uncapped CAM Charges
In a NNN or modified gross lease, you pay a share of the building's common area maintenance (CAM) costs in addition to base rent. CAM covers everything from landscaping and snow removal to property management fees, insurance, and sometimes capital improvements.
When there is no annual cap on CAM increases, landlords can pass through cost spikes of any size — and you have no recourse.
WORKED EXAMPLE
You sign a 5-year NNN lease. Base rent is $8,000/month. CAM is estimated at $2,500/month — total $10,500/month. In Year 2, the landlord replaces the roof and upgrades the parking lot. They also switch to a more expensive property management firm. CAM jumps to $4,200/month — a 68% increase. Your actual monthly cost is now $12,200, not $10,500. Over the remaining 4 years, that $1,700/month difference costs you $81,600 extra — with no warning and no recourse.
What the dangerous language looks like:
LANGUAGE TO REQUEST
"Controllable Operating Costs shall not increase by more than 5% per year on a cumulative basis. Capital expenditures, structural repairs, and landlord management fees shall be excluded from Operating Cost reconciliation."
Also ask for: audit rights (the right to review CAM records annually), a detailed reconciliation statement within 90 days of year-end, and exclusion of any costs that benefit other tenants primarily.
→ Deep dive: CAM Charges in Commercial Leases — Complete Guide
CLAUSE #2 · HIGH RISK
Full-Term Personal Guarantee
Landlords routinely require a personal guarantee from the principals of small business tenants — a promise that if the company can't pay, you personally will. That's reasonable to a point. What isn't reasonable is guaranteeing every dollar of every month for the full lease term, with no burn-off and no limit.
A full-term personal guarantee means your home, savings, and personal assets are on the line until the last day of the lease. If your business closes in Year 2 of a 7-year lease, the landlord can pursue you personally for five more years of rent.
WORKED EXAMPLE
You sign a 7-year lease at $15,000/month. Total lease value: $1.26 million. You personally guarantee the full term. Your restaurant closes in Month 26 after a difficult year. You've paid $390,000 in rent. The landlord sues you personally for the remaining 58 months: $870,000 — plus legal fees. The LLC protected nothing. Your personal savings and your home are exposed.
What the dangerous language looks like:
LANGUAGE TO REQUEST
"Good-guy" clause: "Guarantor's obligations shall terminate upon Tenant's vacation of the Premises in broom-clean condition, with at least 60 days prior written notice to Landlord, and delivery of keys, provided Tenant is current on all rent obligations through the date of vacation."
Fallback: if a good-guy isn't available, negotiate a capped guarantee (e.g., 12–18 months of base rent) or a burn-off schedule (guarantee reduces by 20% per year).
→ Deep dive: Personal Guarantees in Commercial Leases — Complete Guide
CLAUSE #3 · HIGH RISK
Holdover Rent at 200%
Most tenants expect that staying a month or two past lease expiration while finalizing a renewal is no big deal — maybe they'll owe a small premium. In reality, many commercial leases impose holdover rent at 150–200% of base rent, starting on Day 1 of holdover, with no grace period.
Some landlord-favorable leases also include consequential damages — meaning if a new tenant was scheduled to move in and couldn't because you were still there, you're liable for that tenant's relocation costs, lost business, and any penalties the landlord owed them.
WORKED EXAMPLE
Your lease expires March 31. Base rent is $12,000/month. You're 3 weeks from finalizing a 3-year renewal — you decide to stay. The holdover clause reads "200% of last month's base rent." Your April rent bill: $24,000. If negotiations drag into May: another $24,000. Two months of holdover cost you $48,000 instead of $24,000 — a $24,000 penalty for a paperwork delay.
What the dangerous language looks like:
LANGUAGE TO REQUEST
"For the first 60 days following expiration of the Term, holdover tenancy shall be on a month-to-month basis at 110% of the last month's Base Rent. Thereafter, holdover rent shall increase to 150% of the last month's Base Rent. Landlord's consequential damages shall be excluded from Tenant's holdover liability."
The cure period (first 30–60 days at lower rate) is the single most valuable holdover concession — it gives you runway to finalize renewals without penalty.
→ Deep dive: Holdover Provisions in Commercial Leases — Complete Guide
CLAUSE #4 · HIGH RISK
No Early Termination Right
A commercial lease without an early termination right (ETR) is a one-way door. If your business grows and you need a bigger space, if your industry shifts online, if a key anchor tenant leaves and foot traffic collapses — you have no exit. You owe rent until the last day of the term, period.
Landlords do have a duty to mitigate — they must make reasonable efforts to re-lease if you vacate. But in weak markets, that process is slow, and you remain liable for every month of rent until they do.
WORKED EXAMPLE
You sign a 7-year retail lease at $10,000/month in 2023. By 2025, your anchor neighbor leaves and foot traffic drops 40%. Sales are down 35%. You need to close the location. No ETR. The landlord finds a replacement tenant in 14 months. You owe 14 months × $10,000 = $140,000 while generating zero revenue from that location. With an ETR at Year 3 (your situation), you'd have paid a 4-month termination fee (~$40,000) and been done. The no-ETR structure cost you $100,000 more.
What the dangerous language looks like:
LANGUAGE TO REQUEST
"Tenant shall have the right to terminate this Lease effective at the end of Lease Year [3 or 4] upon not less than 180 days prior written notice, and payment of a termination fee equal to [3–4 months Base Rent] plus any unamortized tenant improvement allowance."
Key details: push the ETR window as early as possible (Year 3 ideal, Year 4 acceptable on longer leases). The termination fee should be defined — never leave it as "to be determined." The TI clawback should amortize on a straight-line basis.
→ Deep dive: Early Termination Clauses in Commercial Leases — Complete Guide
CLAUSE #5 · MEDIUM RISK
Open Fair Market Value Renewal Option
A renewal option is a right, not an obligation — it sounds like tenant-favorable language. But a renewal option priced at "fair market value" (FMV) gives you the right to renew at whatever the landlord says the market is. In a rising market, that can mean a 30–60% rent increase at renewal.
The FMV determination process is often one-sided: the landlord provides an initial determination, you can dispute it, but appraisal processes are slow and expensive. If you've been in the space for 5 years and invested in tenant improvements, walking away isn't a real option — you're captive to the renewal price.
WORKED EXAMPLE
You sign a 5-year lease at $14,000/month with a 5-year FMV renewal option. You invest $80,000 in a custom buildout. At renewal, the landlord submits an FMV determination: $20,000/month — a 43% increase. You dispute it; the appraisal process takes 4 months and costs $8,000. The final FMV is set at $19,000/month. Your renewal is $5,000/month more than anticipated — $300,000 additional over the 5-year renewal term — plus $8,000 in appraisal costs. Your buildout investment locked you into that space, and the FMV clause transferred all the market risk to you.
What the dangerous language looks like:
LANGUAGE TO REQUEST
First choice: "Renewal rent shall equal Base Rent in the final Lease Year, increased by 3% per year during the renewal term." (Fixed, predictable, no FMV risk.)
If FMV is non-negotiable: "FMV shall be determined by a mutually agreed MAI appraiser within 30 days of Tenant's renewal exercise. If parties cannot agree on an appraiser within 15 days, each party shall select one appraiser and the two appraisers shall select a third. FMV shall not exceed 115% of the Base Rent in effect during the final Lease Year."
Always include a cap (115–125% of prior rent) and a walk-away right: if FMV exceeds the cap, Tenant may withdraw the renewal exercise within 30 days of FMV determination.
→ Deep dive: Renewal Options in Commercial Leases — Complete Guide
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Quick Reference: 5 Clauses, What to Watch For, What to Ask
| Clause | The Risk | Ask For |
|---|---|---|
| Uncapped CAM | Unlimited annual cost increases | 5% annual cap, exclude capital & mgmt fees |
| Full-term PG | Personal liability for full lease | Good-guy clause or capped guarantee |
| Holdover at 200% | Double rent from Day 1 of holdover | 60-day cure period at 110%, then 150% |
| No ETR | No exit if business conditions change | ETR at Year 3–4 with defined termination fee |
| Open FMV renewal | Renewal price controlled by landlord | Fixed rate or FMV with cap + walk-away right |
Frequently Asked Questions
What is the most dangerous clause in a commercial lease?
The full-term personal guarantee is often the single most dangerous for small business owners — it exposes their personal assets for the entire remaining lease term if the business fails. A good-guy clause or capped guarantee is the most important protection to negotiate.
How much can CAM charges increase each year?
Without a cap, CAM charges have no legal limit and can increase by any amount. In practice, annual increases of 5–15% are common, with spikes as high as 30–40% following major property improvements. Negotiate a hard annual cap of 3–5% and exclude capital expenses and management fees.
What is a good-guy clause in a commercial lease?
A good-guy clause limits a personal guarantee to the period the tenant actually occupies the space. If the business closes and the tenant vacates with proper notice, the guarantor's liability ends at the date of vacation — not at the end of the original lease term.
Can I get out of a commercial lease early?
Only if your lease includes an early termination right (ETR). Without one, breaking the lease exposes you to all remaining rent. ETR terms typically require 6–12 months notice, a termination fee of 3–6 months rent, and repayment of unamortized TI allowance.
What is an FMV renewal option and why is it risky?
A fair market value (FMV) renewal option gives the tenant the right to renew at whatever the market rent is at renewal time — often determined initially by the landlord. In rising markets, renewal rent can be 30–60% higher. Tenants should push for fixed-rate renewals or FMV with a cap and walk-away right.