What Should Be in a Commercial Lease? The Provisions That Decide Who Wins

A commercial lease is a long-term allocation of money and risk between a landlord and a tenant, and a handful of commercial lease provisions carry most of the weight: the rent structure and escalations, the operating expense mechanics, maintenance and repair allocation, assignment and subletting rights, default and remedies, and the exit provisions on both sides. Everything else matters, but those are the clauses I see decide disputes, renewals, and building sales years after signing.

I have drafted and negotiated leases from both chairs for more than two decades, for landlords architecting a building’s leasing framework and for tenants whose lease is their second-largest expense. This article takes the landlord’s structural view; next week’s companion piece walks the same document from the tenant’s side, where the money likes to hide. Together they are the two halves of the most consequential document in commercial real estate.

How should rent and operating expenses be structured?

Base rent is the headline, but the structure around it is the economics. Escalations, whether fixed annual percentage steps, CPI-based adjustments, or scheduled bumps, determine what the lease is worth in year seven, and a landlord’s lender and eventual buyer will value the building on exactly those numbers. Percentage rent, still common in retail, adds a share of tenant sales above a breakpoint, and its reporting and audit mechanics need drafting care.

The expense pass-through structure defines the true net economics. In a triple net lease, the tenant bears taxes, insurance, and operating expenses; in a gross lease, the landlord does, priced into the rent; and the modified structures in between, base years and expense stops, allocate increases over a benchmark. Whatever the structure, the CAM provisions, meaning common area maintenance and its definitions, exclusions, caps, and reconciliation process, are where lease economics get renegotiated in practice. Landlords want broad definitions and clean recovery of costs. Sophisticated tenants want exclusions, caps on controllable expenses, and audit rights. The drafting battle over those lists is worth more than most rent negotiations.

Free rent and other concessions belong in this analysis too, because they are economics wearing a different name. A landlord protecting the face rate with months of abatement is making a valuation decision, since lenders and buyers underwrite the stated rent, and the lease should be clear about when abated rent is forfeited on default. Effective rent, not face rent, is the number both sides should actually be negotiating.

Who fixes what, and why does the roof clause matter so much?

Maintenance and repair allocation is where leases meet physical reality. The classic structure gives the landlord the structure, roof, and common areas, and the tenant the interior, systems serving only its premises, and everything its use affects. The fights live in the boundaries: is the HVAC unit on the roof serving one suite the tenant’s system or the landlord’s roof equipment? Is a replacement a repair? A capital replacement amortized into CAM, or the landlord’s own cost? Precise drafting on capital versus repair, replacement standards, and HVAC responsibility prevents the disputes that sour long tenancies.

Alterations, restoration, and surrender provisions complete the physical picture. What the tenant may change, with what approvals, who owns improvements at the end, and what condition the premises come back in are all cheap to define at signing and expensive to litigate at move-out. A landlord’s leasing framework should answer these questions consistently across the building, because inconsistent leases are a diligence problem when the building is refinanced or sold, a lesson every landlord learns the first time a lender’s counsel abstracts the rent roll.

What do assignment, default, and remedies provisions need to say?

Assignment and subletting provisions govern whose credit stands behind the lease over its life. Landlords underwrite a specific tenant, so consent rights over transfers, standards for granting consent, recapture options, and profit-sharing on subleases are standard structural protections, with carve-outs negotiated for corporate reorganizations and sales of the tenant’s business. The guaranty runs alongside: for smaller tenants, a personal or parent guaranty is often the real credit in the deal, and its scope, burn-off provisions, and survival deserve their own negotiation.

Default and remedies provisions decide how bad situations resolve. Notice and cure periods, differentiated for monetary and non-monetary defaults, the landlord’s remedies of termination, re-entry, and damages, the mitigation obligations state law imposes, and late charges and default interest all belong in clear language, because they will be read in the worst month of the relationship. Security deposits and letters of credit round out the protection. I wrote about a termination-clause dispute early in my AEGIS Law tenure that turned entirely on mechanics like these, and the lesson has not changed: remedies drafted precisely get used rarely, because everyone can see how the dispute ends.

Which exit and flexibility provisions should landlords plan for?

Options are value moving between the parties, and each one should be priced rather than tossed in. Renewal options at fixed rents transfer upside to the tenant; at fair market value with a defined determination process, they preserve it. Termination options, expansion rights, rights of first refusal on adjacent space, and co-tenancy or exclusivity rights in retail each constrain the landlord’s future flexibility, and a building full of casually granted rights is a building that is hard to lease, refinance, or sell. The leasing framework should track every outstanding right in the building, because buyers and lenders certainly will.

Two provisions quietly protect the landlord’s capital events: subordination, non-disturbance and attornment agreements, which keep the leases and the financing compatible, and estoppel obligations requiring tenants to confirm lease status on request. Leases are not just occupancy contracts. They are the collateral and the cash flow the building’s entire capital structure rests on, and drafting them with that second life in mind is what separates a leasing program from a stack of documents.

Frequently asked questions

What is the difference between triple net and gross leases?

In triple net, the tenant pays taxes, insurance, and operating expenses on top of base rent; in gross, the landlord covers them from a higher rent. Modified gross and base-year structures sit between. The label matters less than the definitions, exclusions, and reconciliation mechanics underneath it.

Are commercial leases negotiable, or is the landlord’s form final?

Negotiable, nearly always, with the degree set by market conditions and tenant credit. Even in landlord-favorable markets, cure periods, CAM caps, assignment carve-outs, and option terms move regularly. The form is the landlord’s opening position, not the law.

How long should a commercial lease term be?

Landlords generally want longer terms for valuation and financing; tenants want flexibility. Five to ten years with renewal options is the common commercial middle ground, with the tenant improvement investment usually driving the minimum sensible term for both sides.

Talk with Lori

A lease is a decade of money and risk in one document, and it rewards careful architecture. I build leasing frameworks and negotiate leases at AEGIS Law, licensed in Missouri, Illinois, Florida, and California. Reach me at ldacosse@aegislaw.com.

By Lori DaCosse, Real Estate, Finance & Corporate Attorney, AEGIS Law