Why the LOI Sets the Lease's True Economics
The letter of intent is not merely a placeholder. It is the moment when the parties reveal their real positions and compress months of potential argument into a single negotiable document. Every term left vague at this stage migrates into the lease as disputed language, adding attorney time, deal cycle, and sometimes irreversible structural disadvantage.
The Phrase That Defines the Exercise
Experienced tenant-rep advisers use a simple test: if a term would change the net present value of the deal by more than one month's rent, it must appear in the LOI before anyone calls a lawyer. This framework is what the phrase 8 Office Lease Terms to Settle at the LOI Stage is designed to capture — not a checklist of formalities, but a disciplined filter for the decisions that actually shape the economics of an occupancy.
Understanding which terms clear that bar is the work of deal-execution. The eight categories below each represent a decision point where vagueness costs real money or real optionality. Address them in the LOI, and the lease becomes a drafting exercise. Leave them open, and the lease becomes a renegotiation.
Term One: Base Rent and Escalation Structure
The starting rent headline rarely tells the full story. What matters for lease net present value is the trajectory — a fixed three percent annual bump, a CPI-linked escalation, or a stepped structure can produce materially different total occupancy costs over a ten-year term. Run the full compounding math, not just year-one figures, and confirm that the escalation cap and floor (if any) are written into the LOI rather than deferred.
The escalation base also matters. Some landlords propose rent steps beginning from the commencement date; others peg the first increase to the anniversary of rent commencement, which is relevant when a tenant has negotiated a free-rent period. These distinctions need to be explicit. A LOI that says "rent escalates three percent annually" without specifying the trigger date can cost a tenant several months of unearned increases depending on how the lease is drafted.
If the deal involves a CPI component, agree on the specific index and the measurement period in the LOI. The Bureau of Labor Statistics publishes several versions of the Consumer Price Index; the choice of index and the lag period between measurement and application can swing annual increases by meaningful amounts, particularly over longer terms. Defining these parameters at the LOI stage prevents a low-probability surprise from becoming a high-stakes dispute at execution.
Term Two: Tenant Improvement Allowance and Delivery Conditions
The tenant improvement allowance is arguably the most negotiated economic term in an office lease, and it is the one most likely to unravel a deal if left ambiguous. The LOI should specify the allowance in dollars per rentable square foot, state whether it covers hard costs only or also soft costs (architecture, permits, project management fees), and confirm the disbursement mechanism — landlord-managed construction versus tenant-managed with landlord reimbursement.
Delivery conditions are equally material. Whether the space is delivered in vanilla shell condition, warm shell, or as-is with existing improvements removed partially or wholly determines how far a tenant improvement allowance actually stretches. A hypothetical example: a $75 per square foot allowance against a vanilla shell is structurally different from the same allowance against a cold dark shell that requires HVAC distribution, electrical panels, and plumbing rough-in. Neither the tenant's space planner nor the landlord's project manager can price the work accurately until the delivery condition is defined.
The LOI should also address the allowance expiration and forfeiture terms. Many landlords include language limiting the period within which unused allowance can be drawn. If a tenant plans phased construction or anticipates permitting delays, the LOI is the place to negotiate an extended draw period or a provision allowing unused allowance to be applied against future rent obligations.
Term Three: Commencement Date and Free Rent Period
Commencement date provisions appear simple and become complicated quickly. The LOI should specify whether the lease commences on a fixed calendar date, on substantial completion of landlord work, or on the date the tenant receives possession for its own construction. The practical difference between those triggers can be measured in weeks or months of unintended rent exposure when a building project slips.
Free rent — the period during which the tenant occupies without paying base rent — should be stated as a specific number of months, not as a range or a subject-to-approval carve-out. If the free rent is intended to cover the tenant's construction period, the LOI should address what happens when construction extends beyond the original estimate. Is free rent extended proportionally, or does rent commence regardless of construction status?
The sequence of free rent also carries economic weight. Free rent in months one through six of a ten-year lease has a higher NPV than free rent in years two and three, even if the nominal number of free months is identical. Some landlords offer structured free rent — for example, alternating periods of free and paying months — to manage their own accounting. When these alternatives are proposed, the lease NPV calculation needs to be rerun, and the LOI should lock the preferred structure before negotiation moves on.
Term Four: Rentable Area and Measurement Methodology
Rentable area is a legal construct, not a physical measurement, and two buildings with identical floor plates can have very different usable-to-rentable ratios depending on how common areas, mechanical spaces, and corridor widths are attributed. The LOI should confirm which measurement standard governs — BOMA 2017 is the most widely used reference in U.S. office markets — and whether a remeasurement right is preserved.
Loss factor varies by building class, age, and configuration. In older Class B buildings it is not uncommon for load factors to exceed twenty percent, meaning a tenant paying for ten thousand rentable square feet occupies fewer than eight thousand usable square feet. That differential directly affects the effective rent per usable foot, the capital cost per workstation, and the efficiency of any test-fit. The LOI should include the confirmed rentable area and the load factor or efficiency ratio, not just a nominal square footage.
If the landlord proposes to measure the space after buildout or after any post-delivery modifications to the base building, the LOI needs to address how that retroactive adjustment affects the rent obligation. Some tenants negotiate a cap on any post-commencement remeasurement adjustment. That protection is far easier to secure in the LOI than to carve back from lease language prepared by the landlord's counsel.
Term Five: Renewal and Expansion Options
Options to renew or expand represent future optionality, and optionality has financial value that is not fully captured in the base rent NPV calculation. The LOI should specify the number of renewal terms, their duration, the notice window, the rent reset mechanism (fair market value with or without tenant improvements, fixed rate, or percentage of then-current rent), and whether the option is personal to the named tenant or transferable to permitted affiliates.
Fair market value reset clauses require particular attention. The LOI should address the appraisal or arbitration mechanism for resolving disputes, including who selects the appraiser, what comparables are permitted, and whether tenant improvement allowances and free rent concessions in comparable transactions are included in the fair market value determination. A renewal option that resets to fair market value gross rent, when the tenant's current space is managed on a modified gross basis, can produce a structurally disadvantageous renewal if the benchmark is poorly defined.
Expansion options have an additional complexity: they typically depend on landlord-controlled availability, which creates uncertainty that can frustrate portfolio planning. The LOI should address the notification process for triggering an expansion right, what happens when the adjacent space is committed to another tenant, and whether the expansion option survives a landlord's sale of the building. These provisions are easier to negotiate into a LOI than to retrofit into a completed lease form.
Term Six: Sublease and Assignment Rights
A tenant's right to sublease or assign is a core risk-management tool. If a company grows beyond its space, needs to exit a location before expiration, or is acquired, the sublease and assignment provisions determine whether the lease is an asset or a stranded liability. The LOI should address the standard of consent required from the landlord, any recapture rights the landlord retains, and the profit-sharing formula if the sublease rent exceeds the base rent.
Recapture provisions allow a landlord to take back the space when a tenant proposes a sublease or assignment, effectively terminating the tenant's lease in exchange for the landlord's freedom to re-lease at market rates. For a tenant that views its lease as a hedge against market rent increases, recapture is a material risk. If the tenant intends to negotiate a no-recapture position, the LOI is the place to establish it.
Permitted transfers — assignments to affiliates, related entities, and successors by merger or acquisition — deserve their own definition in the LOI. Many lease forms define permitted transfers narrowly enough to inadvertently capture a corporate restructuring or an internal spin-off as an event requiring landlord consent. The scope of the permitted transfer carve-out should be agreed at the LOI stage, particularly for corporate real estate teams managing space across a large enterprise.
Term Seven: Operating Expense Caps and Pass-Through Structure
The operating expense pass-through mechanism is where effective gross rent diverges most significantly from headline net rent in office leases. Whether the lease is structured as full-service gross, modified gross, or triple-net determines what the tenant pays beyond base rent, but even within those broad categories the specific inclusions, exclusions, and caps carry significant financial consequence.
For modified gross and net leases, the LOI should specify the base year (or expense stop) used to calculate pass-throughs, which expense categories are includable (management fees, capital expenditures amortized at which interest rate, insurance, real estate taxes), and whether controllable operating expenses are capped at a fixed annual increase rate. An annual cap of five percent on controllable expenses, compounded over a ten-year lease, produces a meaningfully different total occupancy cost than an uncapped structure, particularly in inflationary environments.
Capital expenditures deserve specific attention. Some landlords amortize building capital improvements into operating expenses, passing the annual amortization to tenants whose leases span the useful life of the improvement. The LOI should address whether capital expenditures are excluded, capped, or limited to improvements required by law enacted after the lease commencement. Settling this at the LOI stage prevents a future dispute about whether a landlord's roof replacement or elevator modernization belongs on the tenant's expense reconciliation.
Term Eight: Termination Rights and Holdover Provisions
Termination options — rights allowing the tenant to exit the lease before expiration under defined conditions — are worth negotiating into the LOI when the tenant's business planning horizon is shorter than the lease term the market requires. The LOI should address the notice period, the termination payment structure (typically unamortized transaction costs plus an additional penalty), and whether the termination right is exercisable at a fixed date or at the tenant's election within a window.
The termination payment formula deserves careful modeling before it is agreed. A common structure amortizes the landlord's unamortized transaction costs — tenant improvement allowance, leasing commissions, and free rent — at an agreed interest rate over the full lease term, with the balance as of the exercise date becoming the termination fee. At a hypothetical deal with a $100 per square foot allowance and a seven-year term exercised at year five, the unamortized balance can represent a significant obligation. Model the number before agreeing the formula in the LOI.
Holdover provisions are frequently overlooked at the LOI stage and produce some of the most disproportionate lease penalties in commercial real estate. Standard lease forms often impose holdover rent at one hundred fifty percent of the final base rent, sometimes escalating to two hundred percent after a defined period. For large-block tenants, a single month of holdover at double rent represents a substantial unplanned liability. The LOI should cap holdover rent at a specific multiple and define whether the holdover creates a month-to-month tenancy or exposes the tenant to consequential damages.
Connecting LOI Terms to Deal-Execution Discipline
Settling all eight categories in the LOI transforms the lease negotiation from an open-ended conversation into a structured drafting task. The parties already know the economics; the attorneys are translating agreed positions into binding language. That compression materially reduces the risk of deal fatigue and re-trading, which are among the most common reasons large office transactions fail to close on the originally projected timeline.
The workflow implications matter for commercial real estate teams managing multiple active transactions. When a team institutionalizes the practice of resolving these eight categories before engaging counsel, it builds a standard that creates a clear record of agreed terms. That record is valuable not only for the current transaction but as a reference for future deals involving the same landlord, the same submarket, or the same lease structure. Deal-execution becomes a practice rather than an event.
Advisers who maintain a consistent LOI discipline also find it easier to manage client expectations at the most emotionally charged moment in any transaction — the period between handshake and signing. When the LOI covers the material economics completely, there are fewer opportunities for a landlord's lease draft to introduce structural changes disguised as boilerplate. The team can review the lease form against the agreed LOI rather than re-litigating positions that were already settled.
For corporate real estate teams managing portfolios across multiple markets, the value of a disciplined LOI process compounds over time. Each well-structured LOI becomes a data point for understanding how landlords in a given submarket respond to specific requests, what concessions are available in a given demand environment, and how to benchmark future transactions against historical outcomes. That institutional knowledge is built one LOI at a time.
How to Prioritize When Time Is Short
Not all LOI negotiations allow equal time for each of the eight terms.
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