Medical leases live or die in the work letter. Base rent gets the headlines, but the tenant improvement allowance is where the real economics of a clinic, MOB suite, or specialty practice get decided. A few extra dollars per square foot in TI can fund the medical-grade infrastructure that turns a generic office shell into a functional clinical space. A few dollars short, or the wrong language around how the allowance is paid, and the tenant absorbs hundreds of thousands of dollars in unfunded buildout cost that should have been negotiated up front.
Healthcare tenants negotiate against landlords who underwrite to standard office norms, and standard office norms do not work for medical use. This article walks through how physician owners, group practices, and ambulatory operators can structure stronger TI negotiations, what the work letter exhibit needs to capture, and where the most expensive mistakes happen.
Why Standard Office TI Allowances Fall Short for Medical Use
A typical Class A office tenant can build out usable space at modest $/SF figures because the program is light: glass-front offices, open workstations, a few conference rooms, kitchenettes, and standard MEP. A medical tenant in the same building has to fund exam-room plumbing, dedicated mechanical zoning, exhaust for soiled rooms, lab benches, sharps and biohazard waste plumbing, vinyl flooring with integral coved bases, lead-lined walls if there is imaging, ICRA-compliant phasing if the building is occupied, and code-compliant medical waste handling. None of that is in a standard office TI calculation.
Landlords often quote a TI allowance benchmarked to office norms — a number that may be reasonable for a law firm and badly insufficient for a clinic. The tenant who accepts the office number without pushing back ends up funding the medical delta from working capital, which compresses the practice’s launch budget at exactly the moment it needs flexibility. Medical leases need medical-grade work letters, not retrofitted office boilerplate.
What a Strong Medical Lease Work Letter Actually Includes
The work letter exhibit is the operative document, not the lease abstract. The terms that matter most fall into six categories.
TI allowance amount and structure. The total $/SF figure is the headline number, but the structure matters as much. Allowances paid as reimbursement after lien waivers are not the same as allowances paid as direct funding to the GC, and the difference affects the tenant’s working capital meaningfully. Tenants should also negotiate whether unused TI converts to free rent, additional improvements, or simply reverts to the landlord, and which of those scenarios actually applies under what conditions.
Base building delivery condition. The TI allowance assumes a baseline shell condition. If the landlord delivers a worse shell than the work letter describes, the allowance has to absorb the gap. Tenants should specify exactly what the landlord delivers: floor-to-floor heights, slab condition, demising walls, MEP capacity at the suite, sprinkler stub-outs, and access to building risers and base building systems.
MEP capacity and base building modifications. Medical tenants routinely need more electrical capacity, more cooling tonnage, and additional plumbing capacity than the building was designed to deliver to a standard tenant. The work letter should clearly assign responsibility for upgrading base building systems to support medical use — landlord cost, tenant cost from TI, or split — before the design is finalized.
Permit and approvals scope. Medical tenant improvements take longer to permit than office TIs, particularly when the local AHJ flags healthcare occupancy issues. The work letter should address who pays expedited permit fees, how delays in landlord approvals affect the construction schedule, and what happens if the building department imposes upgrades on the base building.
Construction management and oversight rights. Some landlords retain the right to manage the construction or approve every contractor. Medical tenants generally need control over the GC selection, the design team, and the subs that handle medical-grade work. The work letter should give the tenant clear authority over team selection while reasonably accommodating landlord oversight.
Free rent, commencement, and early access. The TI allowance is only one part of the economic package. Free rent during construction, commencement tied to the certificate of occupancy or activation rather than lease execution, and early access for FF&E installation and staff training before rent commences are all valuable terms that experienced tenant reps secure routinely. The American Bar Association publishes guidance on commercial lease structures and tenant work letters that frames the terms experienced healthcare counsel push for.
TI Benchmarks for Medical Office, Clinic, and ASC Tenants
Realistic medical TI allowances vary by market, building class, lease term, and tenant credit, but rough ranges help frame negotiations. Standard medical office and clinic TI in mature markets often runs in the seventy-five to one hundred fifty dollar per square foot range for a ten-year lease with strong tenant credit, with higher allowances in tighter markets and for longer terms. Specialty practices with higher infrastructure needs — endoscopy, infusion, dialysis-adjacent — often negotiate higher allowances tied to specific scope.
Ambulatory surgery centers rarely fit a standard MOB lease at all. The buildout cost is high enough that landlords typically structure ASC leases with separate allowances or build-to-suit arrangements where the landlord funds shell modifications and core infrastructure while the tenant funds the surgical platform. Tenants who try to fit ASC economics into a standard MOB work letter usually end up underfunded.
Tenants benchmarking allowances should also confirm what the allowance can pay for. Some allowances are restricted to landlord-permitted improvements, excluding FF&E, IT, signage, or move-in costs. A generous allowance with restrictive use language is less valuable than a slightly smaller allowance with broad use rights. The Internal Revenue Service publishes guidance on the tax treatment of tenant improvement allowances that affects how the allowance flows through the tenant’s books, which counsel should confirm before lease execution.
Where Medical Tenants Most Often Lose Negotiating Leverage
The pattern is consistent. Medical tenants lose leverage when they fall in love with a specific building before negotiation, when they sign a letter of intent that binds them to terms before the work letter is fully scoped, when they rely on a generalist commercial broker without healthcare experience, and when they let the landlord’s preferred GC manage construction without owner-side oversight.
Each of these is preventable. Walking multiple sites in parallel preserves leverage. Keeping the LOI conditional on work letter terms, not just rent, preserves leverage. Engaging a healthcare-experienced broker preserves leverage. Retaining owner-side oversight of construction preserves leverage. The Building Owners and Managers Association publishes lease language and work letter standards that landlords use as defaults — knowing those defaults helps tenants negotiate against them rather than around them.
How Owner-Side Expertise Changes the Outcome
The tenants who consistently negotiate stronger work letters bring three things to the table that landlords respect: a clear understanding of what the buildout will actually cost, a clear position on the schedule and approvals risk, and a clear pricing for any base building gaps. That information comes from doing the work upfront — test fits, preliminary cost estimates, and a realistic schedule that anticipates permit and inspection realities.
Disciplined lease strategy and negotiation support grounds the tenant’s negotiation in real numbers and real schedule risk, not generic broker assumptions. Strong tenant and landlord representation keeps the tenant’s interests separated from the landlord’s preferred deal structure and protects long-term flexibility. An experienced medical office leasing judgment helps the tenant calibrate which terms matter most for their practice model and which are worth conceding to close the deal.
Negotiate the Work Letter Before You Negotiate the Rent
Healthcare leases reward tenants who do the homework before the LOI is signed. Strong work letters protect the tenant’s capital, schedule, and flexibility for the life of the lease. Talk to Medical Construction Group about how to structure your next medical lease negotiation around a work letter that actually supports clinical use.
Frequently Asked Questions
- What is a typical TI allowance for a medical office lease today?
Allowances vary widely by market, building, lease term, and tenant credit, but seventy-five to one hundred fifty dollars per square foot is a reasonable starting range for a ten-year lease in most markets. Specialty practices and longer terms support higher allowances; weaker tenant credit or shorter terms support lower allowances. - Can the TI allowance pay for FF&E, IT, and signage?
It depends on the work letter. Some allowances are restricted to landlord-permitted real property improvements, while others cover broader categories. Tenants should negotiate explicit language permitting FF&E, low-voltage cabling, security, signage, and other operational fit-out items where appropriate. - Should we accept the landlord’s preferred GC?
Generally not, especially for medical use. Landlord-preferred GCs may not have healthcare-grade experience, and using them often means the tenant loses pricing leverage and quality oversight. Tenants should retain the right to select the GC and design team, with reasonable landlord approval rights.