What Is a Commercial Lease Letter of Intent?
A letter of intent (LOI) is a preliminary document that outlines the key business terms of a proposed commercial lease before either party commits to drafting a full lease agreement. Think of it as a structured handshake: it captures the core economics and deal structure in two to five pages so both landlord and tenant know exactly what they are agreeing to before spending $5,000 to $20,000 on legal fees to draft a 60-page lease.
The LOI goes by several names depending on the market and the parties involved. You will see it called a letter of intent, term sheet, proposal letter, or memorandum of understanding. Regardless of the label, the function is the same: define the deal so that the formal lease is a documentation exercise, not a second round of negotiation.
Why does the LOI matter so much? Because once both parties sign it, the business terms become the baseline. Any deviation from those terms during lease drafting is treated as a concession. If your LOI says base rent is $32.00 per square foot and the landlord's attorney drafts the lease at $34.00, you have clear ground to push back. But if you never addressed tenant improvement allowance in the LOI and the landlord's draft offers $0, you are negotiating from zero rather than from a number you already agreed on.
Key insight: The party that drafts the LOI controls the framework of the negotiation. Every term you include becomes part of the conversation. Every term you leave out is a term you will have to fight for later, on the landlord's turf, in the landlord's lease document.
An LOI is not a lease. It does not create an obligation to lease the space (with a few important exceptions we cover below). But it does create a moral and practical commitment. Walking away from a signed LOI without cause damages your reputation with brokers and landlords in the market. And certain provisions within the LOI can be legally binding even when the rest is not.
Binding vs. Non-Binding LOI Provisions
This is where most tenants get confused and where the real risk hides. A commercial lease LOI is typically structured as a non-binding document with specific binding provisions. The non-binding portion covers the business terms: rent, term length, TI allowance, and so on. These terms represent the parties' intent but do not create a legal obligation to execute a lease on those terms.
However, certain provisions within the same LOI are explicitly stated to be binding and enforceable. These typically include:
Provisions That Are Typically Binding
- Exclusivity / No-Shop Period: The landlord agrees not to market the space to other tenants for a defined period (usually 30 to 90 days). The tenant may also agree not to negotiate with competing properties during this window. This is binding because it requires both parties to forgo other opportunities.
- Confidentiality: Both parties agree not to disclose the terms of the deal to third parties. This is binding because the information has already been shared and cannot be "un-shared."
- Expense Reimbursement: In some LOIs, the tenant agrees to reimburse the landlord for out-of-pocket expenses (legal fees, third-party reports) if the tenant walks away without cause. This is always binding when included.
- Governing Law and Dispute Resolution: The choice of jurisdiction and method for resolving disputes about the LOI itself is binding.
- Good Faith Negotiation: Some LOIs include a binding obligation to negotiate the lease in good faith. Courts in most states will enforce this provision, though the remedy is typically limited to damages rather than specific performance.
Warning: If your LOI does not explicitly state which provisions are binding and which are non-binding, a court may interpret the entire document as binding or non-binding based on the totality of circumstances. Always include a clear "Binding Provisions" section and a statement like: "Except for Sections X, Y, and Z, this Letter of Intent is non-binding and does not create any obligation on either party to execute a lease."
| Provision | Typically Binding? | Risk if Missing |
|---|---|---|
| Base rent, term, TI | Non-Binding | Landlord can change terms in lease draft |
| Exclusivity period | Binding | Landlord shops the space while you negotiate |
| Confidentiality | Binding | Your deal terms leak to competing tenants |
| Expense reimbursement | Binding | Unexpected cost if deal falls through |
| Good faith obligation | Varies | No recourse if landlord stalls or ghosts |
| Governing law | Binding | Dispute resolved in unfavorable jurisdiction |
Every Critical LOI Provision Explained
A complete commercial lease LOI should address eleven core provisions. Missing even one creates a gap the landlord's attorney will fill with language that favors the landlord. Here is every provision you need to include, what it means, and how to negotiate it.
1. Premises Description
This is not just an address. Your LOI should specify the exact suite number, the rentable square footage (RSF), the usable square footage (USF), and the load factor used to calculate the difference. The load factor accounts for common areas like lobbies, hallways, and restrooms. In a typical Class A office building, the load factor is 12% to 18%, meaning you pay rent on 12% to 18% more square footage than you actually occupy.
Load Factor: 15%
Rentable SF: 4,200 × 1.15 = 4,830 SF
Always require the landlord to verify square footage using BOMA standards (ANSI/BOMA Z65.1) and include a right to remeasure the space before lease execution. A measurement discrepancy of just 3% on a $35/SF lease for 5,000 RSF over 5 years costs you $26,250 in overpaid rent.
2. Base Rent Structure
Specify the starting base rent per rentable square foot per year, the frequency of rent escalations, and the method of escalation (fixed percentage, fixed dollar amount, or CPI-based). Fixed-dollar escalations are generally more favorable for tenants because they are predictable. CPI-based escalations can spike in inflationary environments.
Rentable SF: 5,000
Annual Rent: $34.00 × 5,000 = $170,000
Monthly Rent: $170,000 ÷ 12 = $14,167
3. Lease Term and Commencement
State the initial lease term in months or years and define the commencement date. For new construction or spaces requiring buildout, tie commencement to substantial completion of tenant improvements rather than a fixed calendar date. This protects you from paying rent on a space you cannot occupy because the landlord's contractor is behind schedule.
Include a right to terminate early if commencement is delayed beyond a defined outside date (typically 90 to 180 days past the estimated delivery). Without this, you are locked into a deal with no space and no recourse.
4. Renewal Options
Define the number of renewal options, the length of each renewal period, the notice period required to exercise the option, and the method for determining renewal rent. The gold standard for tenants is renewal at 95% of then-prevailing fair market value with a cap on increases and a defined arbitration process if the parties cannot agree on fair market rent.
5. Tenant Improvement (TI) Allowance
The TI allowance is the dollar amount per square foot the landlord contributes to build out your space. This is one of the most heavily negotiated terms in any commercial lease. In 2026, TI allowances for Class A office space typically range from $40 to $80 per RSF depending on market conditions, lease term, and tenant creditworthiness.
Rentable SF: 5,000
Total TI: $55.00 × 5,000 = $275,000
If you negotiate $2.00/SF more:
Additional TI: $2.00 × 5,000 = $10,000
Specify whether unused TI can be applied to rent credits, whether the allowance covers soft costs (architectural, engineering, permit fees) in addition to hard construction costs, and the deadline for using the allowance.
6. Free Rent (Rent Abatement)
Free rent is exactly what it sounds like: a period at the beginning of your lease term during which you occupy the space but do not pay base rent. Free rent typically ranges from one month per year of lease term (e.g., 5 months free on a 5-year lease) in tenant-favorable markets to one month per two years in landlord-favorable markets.
Clarify whether the abatement applies to base rent only or to base rent plus operating expenses. The difference is significant. If your operating expenses are $12.00/RSF on 5,000 SF, one month of full abatement (base rent + OpEx) saves you an additional $5,000 compared to base rent abatement alone.
7. Operating Expenses and Expense Stops
For full-service gross leases, define the base year for operating expenses. For net leases, specify exactly which expenses are passed through (property taxes, insurance, CAM, management fees, capital reserves). Include caps on controllable operating expense increases, typically 3% to 5% per year cumulative or non-cumulative.
8. Personal Guarantee
If the tenant entity is an LLC, S-Corp, or early-stage company, the landlord will almost certainly require a personal guarantee from the principals. Negotiate the scope of the guarantee: a limited or "good-guy" guarantee that expires after 12 to 24 months of on-time rent payments is far better than an unlimited guarantee that survives the entire lease term.
9. Assignment and Subletting Rights
Include the right to assign the lease or sublet the space with landlord consent, which shall not be unreasonably withheld, conditioned, or delayed. Require that assignment to an affiliate or successor entity (merger, acquisition, reorganization) does not require landlord consent at all. Address whether the landlord has the right to recapture the space upon a proposed assignment and whether sublease profits are shared with the landlord.
10. Exclusivity Period
This protects you while you negotiate the full lease. The exclusivity period should be 45 to 90 days and should prevent the landlord from marketing, showing, or negotiating with any other potential tenant for your space during this window. In exchange, you are committing to negotiate in good faith and move toward lease execution.
11. Contingencies
List any conditions that must be met before you are obligated to execute the lease. Common contingencies include board or partner approval, financing approval, satisfactory building inspection, receipt of all required permits, and review of the landlord's standard lease form. Each contingency should have a clear deadline and a defined consequence for failure to satisfy.
The LOI-to-Lease Timeline: How Long Each Phase Takes
Understanding the typical timeline helps you plan your occupancy and avoid rushed decisions. Here is the standard progression from LOI submission to lease execution.
| Phase | Duration | Key Activities |
|---|---|---|
| LOI Drafting | 3–5 days | Tenant (or broker) prepares initial LOI with all key terms |
| LOI Negotiation | 1–3 weeks | Counter-offers, term adjustments, 2–4 rounds of revisions |
| LOI Execution | 1–3 days | Both parties sign; exclusivity and confidentiality become binding |
| Lease Drafting | 2–4 weeks | Landlord's attorney drafts lease based on LOI terms |
| Lease Negotiation | 2–6 weeks | Tenant's attorney reviews, redlines, and negotiates lease language |
| Lease Execution | 1–2 weeks | Final signatures, security deposit, insurance certificates delivered |
| Total | 6–16 weeks | From first LOI draft to fully executed lease |
If you need to be in your new space by a specific date, work backwards from that date and add a buffer. A common mistake is starting the LOI process 8 weeks before a desired move-in date when the process alone takes 6 to 16 weeks before any construction even begins.
Who Should Write the LOI: Tenant vs. Landlord
The party that writes the LOI controls the negotiation framework. This is not a minor tactical point. It is the single most important strategic decision in the pre-lease process.
When the tenant writes the LOI, you set the terms. You define which provisions are included, the starting numbers for every economic term, and the structure of the deal. The landlord responds to your framework. This is the preferred approach for any tenant with negotiating leverage: strong credit, a desirable use, a large space requirement, or multiple competing options.
When the landlord writes the LOI, the landlord sets the framework. The starting rent is higher, the TI allowance is lower, the personal guarantee is broader, and the provisions that protect you (early termination, assignment rights, exclusivity clauses in retail) are often missing entirely. You are now negotiating by subtraction, asking the landlord to remove or reduce terms, rather than negotiation by addition.
Best practice: Even if the landlord offers to send you "their standard LOI," prepare your own version first. You can always present it as a response. The point is to ensure every term that matters to you is on the table from the beginning.
7 LOI Mistakes That Cost Tenants Real Money
After analyzing thousands of commercial lease LOIs, these are the mistakes we see most often. Each one has a quantifiable cost.
- Not specifying measurement standards. The landlord measures the space using a non-standard method, inflating RSF by 5% to 8%. On a $35/SF lease for 5,000 SF over 5 years, a 5% overstatement costs you $43,750.
- Accepting CPI escalations without a cap. In 2022-2024, CPI-based escalations hit 6% to 9% annually. Without a cap, your rent can spiral beyond what you budgeted. A 3% cap on escalations limits your exposure.
- Failing to address the personal guarantee scope. A full-term personal guarantee on a 10-year lease means your personal assets are exposed for a decade. A burning-off guarantee that reduces annually or expires after 24 months is standard in competitive markets.
- Leaving TI disbursement terms undefined. The LOI says "$50/SF TI allowance" but does not address timing. The landlord disburses funds only after construction is complete, forcing you to front $250,000 and wait 90 days for reimbursement. Define milestone-based disbursement in the LOI.
- No deadline for lease delivery. You sign the LOI and the landlord takes 8 weeks to produce a first draft. Meanwhile, your exclusivity period expires and you have no leverage. Require the landlord to deliver the first lease draft within 15 to 20 business days of LOI execution.
- Omitting a termination right for delayed delivery. The landlord promises the space in 90 days but delivers in 210 days. You have been paying double rent on your current space. Include a right to terminate if the space is not delivered within 120 to 180 days of the estimated delivery date.
- Not negotiating the exclusivity period length. A 30-day exclusivity period is too short. By the time the landlord's attorney drafts the lease, the exclusivity has expired and the landlord can entertain backup offers. Push for 60 to 90 days.
The Math: How LOI Terms Affect Your Total Lease Cost
Small differences in LOI terms compound over the lease term. Here is the math on a representative 5,000 RSF office lease with a 5-year term.
Weak LOI: $36.00/RSF → $180,000/year
Strong LOI: $34.00/RSF → $170,000/year
5-year savings: $50,000
TI Allowance Difference:
Weak LOI: $45.00/RSF → $225,000
Strong LOI: $55.00/RSF → $275,000
Difference: $50,000
Free Rent Difference:
Weak LOI: 2 months free
Strong LOI: 5 months free
Monthly rent at $34/RSF: $14,167
3 additional months: $42,500
Escalation Difference:
Weak LOI: 3.5% annual escalation
Strong LOI: 3.0% annual escalation
5-year cumulative difference: ~$8,700
These are not hypothetical numbers. They represent the actual range of outcomes we see between tenants who negotiate every LOI provision and tenants who accept the landlord's first offer. On a 10,000 SF space or a 10-year term, the numbers double or triple.
LOI Provisions: What the Tenant Wants vs. What the Landlord Wants
Understanding the landlord's position helps you negotiate more effectively. Here is how each party typically approaches the key LOI provisions.
| Provision | Tenant Wants | Landlord Wants |
|---|---|---|
| Base Rent | Below-market rate with fixed $ escalations | Above-market rate with CPI or % escalations |
| Lease Term | Shorter term (3–5 yrs) with renewal options | Longer term (7–10 yrs) with no early termination |
| TI Allowance | $55–$80/RSF with unused portion as rent credit | $30–$45/RSF, use-it-or-lose-it, hard costs only |
| Free Rent | 1 month per year of term, gross abatement | 1 month per 2 years, base rent only |
| Operating Expenses | Gross lease, base year, 3% cap on controllable expenses | NNN or modified gross, no caps, broad pass-through list |
| Personal Guarantee | Limited/good-guy guarantee, burns off after 12–24 months | Full-term unlimited personal guarantee |
| Assignment/Sublet | Broad rights, affiliate transfers without consent, keep sublet profits | Landlord consent required, recapture right, 50% profit sharing |
| Exclusivity Period | 60–90 days, no landlord marketing during period | 30 days or no exclusivity at all |
| Renewal Options | Two 5-year options at 95% FMV with arbitration | One 3-year option at 100% FMV, landlord determines FMV |
| Contingencies | Multiple outs: financing, inspection, board approval, permitting | No contingencies; tenant commits at LOI signing |
The 12-Item LOI Negotiation Checklist
Before you sign any commercial lease LOI, verify that every item on this checklist is addressed. A missing item is not neutral. It is a concession to the landlord that you did not intend to make.
- Premises identified with exact suite, RSF, USF, load factor, and BOMA measurement verification right — ensures you are paying rent on accurate square footage, not inflated numbers.
- Base rent stated per RSF/year with escalation method, amount, and frequency clearly defined — prevents ambiguity that the landlord's attorney will resolve in the landlord's favor.
- Lease term, commencement date trigger, and outside delivery date with termination right specified — protects you from paying double rent if the landlord's buildout runs late.
- TI allowance per RSF defined, including eligible costs, disbursement schedule, and unused-TI treatment — ensures you receive the full economic value of the allowance without fronting capital.
- Free rent period stated with scope (base rent only vs. gross) and conditions for forfeiture — a vague free rent provision can be clawed back if you default on any lease term, even a minor one.
- Operating expense structure defined: base year, cap on controllable increases, exclusion list — prevents surprise CAM reconciliation charges that can add $3–$8/RSF to your annual cost.
- Personal guarantee scope limited: burn-off schedule, cap amount, or good-guy structure — limits your personal financial exposure on a business lease obligation.
- Assignment and subletting rights included with affiliate carve-out and no recapture right — gives you flexibility to exit, downsize, or restructure without losing the lease.
- Renewal options defined: number, length, rent determination method, notice period, and dispute resolution — secures your right to stay in the space without renegotiating from zero.
- Exclusivity period of at least 60 days with landlord no-shop obligation clearly stated — prevents the landlord from using your LOI as leverage to get a better deal from another tenant.
- Contingencies listed with deadlines: board approval, financing, inspection, permitting, lease form review — gives you defined exits if conditions are not met without breaching the LOI.
- Binding vs. non-binding provisions clearly labeled, with explicit language on which sections survive LOI expiration — prevents the entire LOI from being construed as a binding contract.
6 Red Flags in Commercial Lease LOIs
These are the danger signals that should make you pause, push back, or walk away. Each one indicates a landlord-favorable term that can cost you tens of thousands of dollars.
🚨 Red Flag #1: The entire LOI is stated as binding. If the LOI does not contain a clear non-binding provision, you may be legally committed to the lease terms before the lease is even drafted. Some landlords intentionally omit the non-binding language. If you sign, a court may hold you to every term in the document. Always verify the non-binding clause exists and is unambiguous.
🚨 Red Flag #2: No exclusivity period is offered. Without exclusivity, the landlord can continue marketing the space, entertaining backup offers, and using your LOI as a stalking horse to extract better terms from other tenants. You invest weeks negotiating a lease while the landlord shops your deal. Demand a minimum 60-day exclusivity period or reconsider the deal.
🚨 Red Flag #3: The LOI references the landlord's "standard lease form" without providing it. You are agreeing to business terms without knowing the legal framework those terms will be embedded in. The landlord's standard lease may include provisions that effectively override your LOI: broad default triggers, personal guarantee language, waiver of jury trial, or one-sided indemnification. Request the standard lease form before signing the LOI so you know what you are committing to.
🚨 Red Flag #4: TI allowance is described as "building standard" without a dollar amount. "Building standard" means whatever the landlord decides it means. It could be $20/RSF of basic ceiling tile, carpet, and paint. It could be $60/RSF of high-quality finishes. Without a dollar figure, you have no way to budget your buildout or compare offers from competing landlords. Always convert "building standard" to a specific dollar-per-RSF allowance.
🚨 Red Flag #5: Rent escalation is tied to CPI with no cap. Between 2021 and 2024, CPI exceeded 6% in multiple years. If your lease escalates at CPI with no cap, your Year-5 rent could be 30% to 40% higher than your Year-1 rent. On a $170,000/year base rent, that is an additional $51,000 to $68,000 per year by the end of the term. Insist on a cap (3% to 4%) or switch to fixed-dollar escalations.
🚨 Red Flag #6: The LOI includes a tenant expense reimbursement clause exceeding $10,000. Some landlord LOIs include a provision requiring the tenant to reimburse the landlord for legal fees, architectural costs, and other expenses if the tenant does not execute the lease. These clauses can exceed $25,000. While modest reimbursement for out-of-pocket expenses may be reasonable, an uncapped expense reimbursement provision creates a financial penalty for walking away from a bad deal. Cap reimbursement at a fixed dollar amount or reject the provision entirely.
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Analyze Your Lease Free →The Bottom Line
The commercial lease letter of intent is not a formality. It is the document that defines your deal. Every dollar you negotiate into the LOI — whether it is a lower base rent, a higher TI allowance, an extra month of free rent, or a limited personal guarantee — carries forward into the lease. Every term you leave out is a term the landlord's attorney will define for you, and they will not define it in your favor.
Write the LOI yourself or have your broker draft it on your behalf. Address all eleven core provisions. Use the 12-item checklist to verify nothing is missing. Watch for the six red flags. And run the math on every term before you agree to it, because small per-square-foot differences compound into five- and six-figure impacts over a multi-year lease term.
The tenants who get the best deals are not the ones with the most leverage. They are the ones who come to the table prepared, with a complete LOI that leaves nothing to chance and nothing for the landlord's attorney to fill in.