Commercial Lease FAQ Hub
50+ expert answers to the most common commercial lease questions, organized by category. No jargon, no fluff — just clear answers from CRE professionals.
Lease Basics
10 questions answered
What is a commercial lease?
A commercial lease is a legally binding agreement between a landlord and a business tenant for the use of non-residential property — such as office space, retail storefronts, warehouses, or industrial facilities. Unlike residential leases, commercial leases are heavily negotiated, rarely standardized, and can span from 1 to 25+ years.
What is the difference between a gross lease and a net lease?
In a gross (full service) lease, the quoted rent includes most operating expenses — the landlord pays taxes, insurance, and maintenance. In a net lease (NNN), the tenant pays base rent plus their pro-rata share of property taxes, insurance, and maintenance costs separately. Modified gross leases are a hybrid of the two.
What does NNN mean in commercial real estate?
NNN stands for "triple net." In a triple net lease, tenants pay three costs in addition to base rent: (1) property taxes, (2) building insurance, and (3) maintenance/operating expenses. NNN leases are common in retail and industrial deals — the landlord receives a relatively fixed net income while tenants bear operating cost variability.
What is a lease term?
The lease term is the duration of the lease agreement — how long the tenant has the right to occupy the space. Commercial lease terms typically range from 1 to 10 years, with longer terms (5–10 years) often negotiated for larger spaces or significant tenant improvements. The term begins on the lease commencement date and ends on the expiration date.
What is usable square footage vs rentable square footage?
Usable SF is the actual space within your four walls — the square footage you physically occupy. Rentable SF includes your usable area plus a pro-rata share of building common areas (lobbies, hallways, restrooms, mechanical rooms). The ratio between the two is called the 'load factor' or 'add-on factor' — typically 10–25% in office buildings. You pay rent on rentable SF, so understanding this ratio directly affects your cost.
What is CAM in a commercial lease?
CAM stands for Common Area Maintenance. CAM charges are the tenant's pro-rata share of costs to maintain and operate shared building areas — lobbies, parking lots, landscaping, roof, HVAC systems, and more. In a NNN lease, CAM is one of the three 'nets' the tenant pays. In a full service lease, CAM is included in the base rent up to a base year stop. CAM can add 20–60% to your effective rent cost.
What is a lease renewal option?
A renewal option (or option to renew) gives the tenant the right — but not the obligation — to extend the lease for an additional term at a predetermined rent or rent formula. Options must typically be exercised within a specific notice window (often 6–12 months before expiration). Missing this window forfeits the option, so calendar your option exercise deadline carefully.
What is a letter of intent (LOI) in commercial real estate?
A letter of intent is a non-binding document that outlines the key commercial terms of a proposed lease deal before a formal lease is drafted. LOIs typically cover: space size, location, term, face rent, free rent, tenant improvement allowance, renewal options, and lease type. While LOIs are non-binding, they set the tone for negotiations and establishing terms before attorney involvement.
What is a sublease vs an assignment?
A sublease is when a tenant rents their space to a subtenant while remaining primarily liable to the landlord under the original lease. An assignment transfers the entire lease to a new tenant — the assignee takes over all obligations. In an assignment, the original tenant may still be secondarily liable unless they receive a landlord release. Both typically require landlord consent.
What is a holdover in commercial leasing?
Holdover occurs when a tenant continues to occupy the space after their lease expires without signing a new lease or renewal. Commercial leases typically include holdover provisions that either (a) convert the tenancy to a month-to-month at 125–200% of the prior rent, or (b) make the holdover tenant liable for all damages the landlord incurs from the tenant's failure to vacate. Always plan your exit or renewal well before expiration.
Cost & Financials
10 questions answered
What is net effective rent vs face rent?
Face rent (asking rent) is the stated per-SF rate in the lease. Net effective rent (NER) is the average monthly cost after all concessions — free rent periods, TI allowances, moving allowances — are factored in. NER is always lower than face rent when concessions exist. The gap between them is typically 10–40% in active markets. Always compare competing deals using NER, never face rent.
What is a tenant improvement (TI) allowance?
A tenant improvement allowance is money the landlord provides to help the tenant build out or improve the space to their specifications. TI allowances are typically quoted as dollars per square foot ($50–$150+ PSF in office markets). The landlord either pays contractors directly or reimburses the tenant upon submission of receipts. Any build-out cost above the TI allowance is the tenant's responsibility.
What are typical rent escalation clauses?
Commercial lease rents almost always escalate during the term. The three most common escalation structures are: (1) Fixed percentage — e.g., 3% per year; (2) Fixed dollar step — e.g., $1 PSF increase each year; (3) CPI-indexed — rent increases tied to the Consumer Price Index. A 3% annual escalation compounds significantly — on a $20,000/month lease, you'll pay $26,878/month in year 10.
What is a base year in a full service lease?
In a full service lease, the base year is the year (or expense figure) used as the baseline for calculating operating expense pass-throughs. The tenant pays increases in operating expenses above the base year level. Typically the first full year of the lease is used as the base year. In a low-occupancy building, a gross-up provision may inflate the base year figure to normalize occupancy.
How are CAM charges calculated?
CAM charges are typically calculated as: (Tenant's SF ÷ Total Building SF) × Total CAM Expenses. This is the tenant's pro-rata share. For example: if you occupy 5,000 SF in a 50,000 SF building (10% pro-rata) and total CAM expenses are $300,000 per year, your CAM charge is $30,000/year ($2,500/month). Always request 3 years of historical CAM figures before signing.
What is a CAM cap or CAM expense cap?
A CAM cap limits how much controllable operating expenses can increase year over year — typically 3–5% annually. Controllable expenses include management fees, maintenance contracts, and security. Fixed expenses like property taxes and insurance are usually uncapped. A CAM cap is one of the most valuable protections tenants can negotiate in NNN and modified gross leases.
What is a personal guarantee in a commercial lease?
A personal guarantee is a clause where an individual (typically a business owner or key executive) personally guarantees the tenant's lease obligations. If the business defaults, the landlord can pursue the guarantor's personal assets. Negotiate to limit guarantees: cap the amount (e.g., 12 months' rent), burn off the guarantee over time (e.g., eliminated after 24 months of on-time payment), or limit to specific obligations.
What is a letter of credit vs security deposit in commercial leases?
A security deposit is cash held by the landlord that's returned (minus deductions) at lease end. A letter of credit (LOC) is a bank-issued instrument guaranteeing payment to the landlord upon a stated default condition. LOCs are preferred by landlords (easier to draw) but are more complex and have bank fees for tenants. Security deposits are simpler but landlords control the cash. Both serve as financial security for the landlord.
What is a gross-up provision?
A gross-up provision allows landlords to calculate variable operating expenses (utilities, cleaning, security) as if the building were fully occupied (typically 95%), regardless of actual occupancy. This prevents tenants from benefiting from artificially low base year expenses when occupancy is low. Gross-ups should only apply to variable expenses — never to fixed costs like property taxes or insurance.
How do I calculate my total occupancy cost?
Total occupancy cost = Base rent + CAM/NNN charges + Utilities (if tenant-paid) + Parking fees + Any other recurring charges. For a full service lease: Total = Base rent + Operating expense pass-throughs above base year. Always model all costs on a per-SF-per-year basis for comparability. Use LeaseAI's ROI Calculator to model costs across competing spaces.
Legal Terms
10 questions answered
What is an SNDA agreement?
SNDA stands for Subordination, Non-Disturbance, and Attornment. It's a three-part agreement between a landlord's lender, the landlord, and the tenant. Subordination means the lease is subordinate to the mortgage. Non-disturbance means if the lender forecloses, the tenant's lease remains in place. Attornment means the tenant agrees to recognize the new owner as landlord. Tenants should always insist on non-disturbance protection.
What is a force majeure clause?
A force majeure clause excuses a party's performance obligations when extraordinary events beyond their control prevent performance — pandemics, natural disasters, war, government orders. COVID-19 triggered widespread force majeure litigation. Tenants should ensure: (1) the definition of qualifying events is broad, (2) the clause covers rent obligations (many force majeure clauses don't), and (3) notice requirements are clearly defined.
What is co-tenancy in retail leases?
A co-tenancy clause gives a retail tenant the right to pay reduced rent or terminate the lease if a key tenant (typically an anchor tenant like a major retailer) closes or vacates the shopping center. Co-tenancy provisions recognize that a small tenant's sales depend partly on the traffic generated by larger anchor tenants. Without a co-tenancy clause, a tenant can be stuck in a dead mall paying full rent.
What is a right of first refusal (ROFR) in commercial leases?
A right of first refusal gives a tenant the right to match any third-party offer for adjacent space or for the building itself before the landlord accepts it. If the landlord receives an offer, they must present it to the tenant, who then has a specified period (typically 5–10 days) to match. ROFRs are valuable for growing businesses but must be exercised carefully to avoid being waived through inaction.
What is an exclusivity clause in a retail lease?
An exclusivity clause prohibits the landlord from leasing other space in the same shopping center or building to a direct competitor of your business. For example, a pharmacy tenant may negotiate exclusive rights to sell prescription medications, so the landlord can't rent another space to a competing pharmacy. Exclusivity provisions require careful drafting — the definition of 'competing business' must be specific enough to be enforceable.
What is a lease guaranty vs a lease surety?
A guaranty is a promise by a third party (guarantor) to perform the tenant's obligations if the tenant defaults. Most commercial lease guarantees are personal guarantees by business owners. A surety is similar but typically refers to corporate surety bonds issued by insurance companies as an alternative to personal guarantees. Sureties are less common in commercial leasing than guarantees or letters of credit.
What is an estoppel certificate?
An estoppel certificate is a signed statement by a tenant certifying: (1) the lease is in full force and effect, (2) the current rent amount, (3) whether any defaults exist, and (4) the lease commencement and expiration dates. Landlords request estoppels when selling or refinancing a property — lenders and buyers need estoppels to verify lease terms. Tenants are usually contractually required to provide estoppels within 10–30 days of request.
What is landlord consent in a commercial lease?
Landlord consent is permission required from the landlord before a tenant can take certain actions — subletting, assigning the lease, making alterations, installing signage, or operating outside permitted use restrictions. Most leases require 'prior written consent.' The standard varies: 'sole discretion' (landlord can refuse for any reason), 'reasonable discretion' (landlord must have a legitimate business reason), or 'not to be unreasonably withheld or delayed' (most tenant-favorable).
What is a subordination clause?
A subordination clause makes the lease junior to any mortgage on the property. This means if the landlord defaults on their mortgage and the lender forecloses, the tenant's rights under the lease may be extinguished by the foreclosure. Subordination is standard in commercial leases, which is why tenants must pair it with a non-disturbance agreement — protecting their tenancy in the event of a lender foreclosure.
What is a quiet enjoyment covenant?
A covenant of quiet enjoyment is a landlord's promise that the tenant has the right to use and enjoy the leased space without disturbance from the landlord or anyone claiming title through the landlord. It's one of the most fundamental tenant protections in commercial leasing. If the landlord materially interferes with the tenant's use (constructive eviction), the tenant may have the right to terminate the lease and seek damages.
Process & Timeline
10 questions answered
How long does it take to sign a commercial lease?
The commercial leasing process typically takes 3–9 months from initial space search to lease execution, depending on deal complexity. Key phases: space touring (2–6 weeks), LOI negotiation (1–3 weeks), lease drafting (2–6 weeks), lease negotiation (2–8 weeks), and final execution. Build-to-suit and large corporate deals can take 12+ months. Start your search 12–18 months before you need to be in the new space.
What is the difference between lease commencement and rent commencement?
Lease commencement is when the lease term officially begins and the tenant takes possession. Rent commencement is when base rent payments start. When a landlord grants free rent, these dates differ — you might take possession January 1 (lease commencement) but not pay rent until April 1 (rent commencement with 3 months free). The lease term always runs from lease commencement, not rent commencement.
When should I start looking for commercial space?
Start 12–18 months before your target move-in date for spaces requiring significant build-out or for large spaces (5,000+ SF). For smaller, ready-to-occupy spaces, 6–9 months is the minimum. Factors that require more lead time: custom build-outs, permit-dependent operations (restaurants, medical, labs), tight markets with limited availability, and deals requiring extensive lease negotiations.
What is a lease abstract?
A lease abstract is a summary of the key business terms in a lease — rent schedule, term, renewal options, TI allowance, CAM provisions, permitted use, landlord and tenant obligations, and other critical provisions. Abstracts condense a 50–100 page lease into a 1–5 page document for quick reference. AI tools like LeaseAI can generate a complete lease abstract from a PDF in under 30 seconds.
What happens when my lease expires?
When a commercial lease expires, you have three options: (1) Negotiate a renewal — exercise your option if you have one, or negotiate new terms; (2) Relocate — vacate the space and move to a new location; (3) Hold over — stay in the space on a month-to-month basis, typically at 125–200% of your final lease rate. Most landlords prefer a renewal. Start renewal discussions at least 12 months before expiration.
What is a lease commencement date memorandum?
A lease commencement date memorandum (CDM) is a document both parties sign once the lease actually begins, confirming the official lease commencement date, rent commencement date, and lease expiration date. This is especially important in condition-based leases where commencement is triggered by landlord delivery. Review the CDM carefully before signing — it establishes the definitive date record for all future calculations.
How do commercial lease negotiations work?
Negotiations typically start with an LOI covering key terms. Once the LOI is agreed, attorneys draft and negotiate the full lease document. Landlords usually present their standard form lease. Tenants (through counsel) submit a redline with requested changes. Negotiations focus on: TI allowance, free rent, renewal options, CAM caps, personal guarantee terms, exclusivity, assignment rights, and early termination rights. Expect 2–8 weeks of back-and-forth.
What is a tenant improvement buildout process?
After signing, the TI buildout involves: (1) Architectural design and space planning; (2) Permitting (varies by jurisdiction — 2–12 weeks); (3) General contractor selection and bidding; (4) Construction (varies by scope — 4–20 weeks); (5) Punchlist and final inspection; (6) Certificate of occupancy. This is why free rent periods during construction are essential — operating a business in an unfinished space isn't possible.
What is the difference between shell space and turnkey space?
Shell space (also 'cold dark shell') is a raw, unfinished space with only basic building systems (HVAC stubs, electrical panel, concrete floors, exposed structure). Turnkey space is move-in ready — fully finished with flooring, lighting, HVAC, and often furniture. The spectrum: cold dark shell → vanilla shell (basic finishes, ceiling, lights) → turnkey. Shell spaces require full TI investment; turnkey may need minimal improvement.
Do I need a tenant broker (tenant rep) for commercial leasing?
Yes — in almost all cases, tenants benefit from using a tenant representative (tenant rep) broker. Tenant reps are paid by the landlord (their commission comes from the deal), so their services cost you nothing directly. They know the market, access off-market listings, negotiate on your behalf, and understand lease language. Going direct to the landlord's broker means that broker represents the landlord's interests — not yours.
Tenant Rights
10 questions answered
What are my rights if the landlord fails to maintain the building?
Your rights depend on what the lease requires of the landlord. In a gross lease, the landlord is typically responsible for maintaining structural elements, HVAC, plumbing, and common areas. If the landlord fails to maintain the building: (1) Send written notice specifying the problem and a cure deadline; (2) If uncured, check your lease for self-help rights (tenant performs repair, deducts from rent); (3) Consult an attorney about rent withholding or constructive eviction claims. Many leases include specific landlord maintenance obligations and cure periods.
Can a landlord lock me out of my commercial space?
Commercial landlord self-help (lockouts) is legal in some states but not others. States like Texas allow commercial lockouts after proper notice; states like California and New York prohibit them. Regardless of state law, your lease may restrict the landlord's self-help rights. If you're locked out wrongfully, you may be entitled to emergency injunctive relief plus damages. Never abandon the space voluntarily — it could constitute a surrender.
What is constructive eviction?
Constructive eviction occurs when a landlord's actions (or inactions) make the leased space uninhabitable or unusable for the tenant's intended purpose — even if the tenant isn't physically removed. Examples: no heat in winter, flooding, pest infestation, chronic HVAC failure. If a landlord constructively evicts a tenant, the tenant may be able to terminate the lease and seek damages. You must vacate the space to claim constructive eviction in most states.
What happens if my landlord sells the building?
When a building is sold, commercial leases typically survive the sale — the new owner takes the property subject to existing leases. The tenant's rights and obligations don't change. However: (1) Your security deposit should transfer to the new owner; (2) The new owner may have different priorities for the property; (3) If there's a mortgage foreclosure (not just a sale), non-disturbance protections from your SNDA become critical.
Can I break my commercial lease early?
Breaking a commercial lease early without a contractual right to do so exposes you to significant damages — typically the landlord's losses for the remainder of the lease term (though most states require landlords to mitigate). Legitimate early exit options: (1) Negotiate an early termination with a buyout (typically 3–6 months' rent); (2) Exercise a contractual early termination option if you negotiated one; (3) Sublease or assign the space; (4) Assert a landlord default as justification. Always consult an attorney.
What are my rights if the building is condemned?
If a building is condemned by a government authority and you can no longer occupy your space, the lease is typically terminated. Tenants may be entitled to: (1) Refund of prepaid rent; (2) Return of security deposit; (3) A share of any condemnation award if the lease provides for it; (4) Moving expenses. Government takings (eminent domain) of commercial property entitle the owner to just compensation — tenants may have separate rights to claim damages for business interruption and moving costs.
What is my landlord required to disclose to me?
Commercial lease disclosure requirements vary significantly by state and are generally less protective than residential lease requirements. However, landlords are typically required to disclose: (1) Known environmental hazards (asbestos, lead paint, contamination); (2) Pending eminent domain proceedings; (3) Pending foreclosure in some states; (4) Zoning restrictions on your permitted use. In many states, commercial tenants have limited disclosure protections — due diligence is primarily the tenant's responsibility.
Can a landlord raise my rent during my lease term?
In a fixed-rent commercial lease, the landlord cannot unilaterally raise base rent during the lease term — rent increases must follow the escalation schedule in the lease. However, operating expense pass-throughs (CAM, taxes, insurance) can increase annually based on actual costs. In a NNN lease, significant increases in property taxes or insurance can substantially increase your total cost even if base rent is fixed.
What protections do I have as a new commercial tenant?
Key protections to negotiate before signing: (1) Right to audit CAM charges; (2) CAM cap limiting annual expense increases; (3) Non-disturbance agreement protecting your tenancy in foreclosure; (4) Exclusivity preventing competing businesses in the building/center; (5) Personal guarantee burn-off reducing guarantor exposure over time; (6) Force majeure clause; (7) Clear landlord maintenance obligations with cure periods; (8) Relocation restrictions preventing the landlord from moving you.
What should I do if my landlord is in default?
If your landlord materially breaches the lease: (1) Document everything — photos, written notices, correspondence; (2) Send formal written notice of the default specifying the breach and cure deadline; (3) Review your lease for landlord cure periods (typically 30 days with a 30-day extension for non-curable issues); (4) Consult a CRE attorney before withholding rent or taking self-help measures; (5) Consider whether the breach rises to constructive eviction; (6) If you have holdback rights, exercise them per the lease terms.
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