Stark Law Lease Requirements Explained for Medical Offices

The Stark Law office-space rental exception lets a healthcare landlord lease space to a referring physician practice only if the lease is in writing and signed, runs at least one year, sets rent in advance at fair market value, does not tie rent to the volume or value of referrals, covers space reasonably necessary for the practice, and is commercially reasonable even without any referrals. Miss one of those and the lease can fall outside the exception, which is why medical office landlords and counsel read every lease against the same checklist. This guide walks through each requirement and how to keep the lease terms organized across a portfolio. It is general information, not legal advice; confirm compliance with healthcare counsel.

What is the Stark Law?

The Stark Law (the physician self-referral law) bars a physician from referring Medicare patients for certain designated health services to an entity the physician has a financial relationship with, unless an exception applies. A lease between a physician practice and a landlord that refers, or is referred to, creates exactly that kind of financial relationship. The office-space rental exception at 42 CFR 411.357(a) is the safe path: meet its requirements and the lease does not trigger a Stark violation. Because the penalties are steep and strict-liability in nature, healthcare real estate teams treat the exception as a hard checklist, not a guideline.

What are the Stark Law office-space lease requirements?

The office-space rental exception requires several things at once. The lease must be in writing, signed by the parties, and specify the premises it covers. The term must be at least one year. The rental charge must be set in advance, be consistent with fair market value, and not be determined in a way that takes into account the volume or value of referrals or other business between the parties. The space rented must not exceed what is reasonably necessary for the legitimate business purpose of the tenant. And the arrangement must be commercially reasonable even if no referrals were ever made. Every one of those terms lives somewhere in the lease document, which is why they have to be captured accurately when you abstract the lease.

What does fair market value rent mean under Stark?

Fair market value rent is the rent that would be negotiated between well-informed parties who are not in a position to refer business to each other, for comparable space in the same market. It must be set in advance, meaning the rent schedule is fixed in the lease rather than adjusted later based on the relationship. Rent cannot move with referral volume, cannot use a per-click or percentage-of-revenue formula tied to designated health services, and should be supported by market evidence. When you abstract a medical office lease, the rent schedule and escalation terms are the fields counsel relies on to show the FMV and set-in-advance tests are met.

What is the exclusive-use requirement, and did it change?

The exclusive-use requirement historically meant the leased space had to be used exclusively by the tenant during the lease term. CMS finalized a change to that requirement so that a lessee, and other lessees of the same space, may use the space at the same time, as long as the lessor (or anyone related to the lessor) is excluded from using it. The practical effect is that shared clinical space can work, but the lease wording has to be exact about who is and is not permitted in the space. Capturing that language precisely in the lease abstract is what lets counsel and asset management read the same thing.

How long must a Stark-compliant lease be?

The office-space exception requires a term of at least one year. If a lease is terminated early, the parties generally cannot enter a new lease for the same space on different terms within that first year, which is meant to stop rent from being reworked to reward referrals. Holdover arrangements can continue on the same terms after the initial term under conditions CMS has specified. Because the term and any early-termination or holdover rights are compliance checkpoints, they belong in the abstract alongside the rent.

Who is responsible for keeping a medical lease Stark-compliant?

Responsibility is shared. The healthcare landlord, the physician practice, and their respective counsel all have an interest in the lease meeting the exception, because both sides face exposure if it does not. In practice, the asset management or compliance team maintains the lease data, and counsel reviews the terms against the exception at signing and on any amendment or assignment. That works only if the lease terms are organized and verifiable, which is why a clean, source-linked abstract of every lease is the foundation of an ongoing compliance review.

Keeping Stark-relevant lease terms organized across a portfolio

One lease is easy to read against the checklist. A portfolio of medical office buildings is not, especially when each lease has amendments that change rent, term, or use. The reliable way to keep the data straight is to abstract every lease to the same fields, with each value linked to the clause it came from, so a reviewer can confirm the rent, term, use, and assignment terms in seconds. That is the core of lease abstraction for healthcare real estate, and the broader tool is covered in our lease abstraction software overview. For the full field list a complete medical office abstract should carry, see the commercial lease abstract template, and for the legal-review angle, lease abstraction for paralegals.

A few adjacent tasks come up alongside the lease itself. Because the exception requires a written, signed lease, practices and landlords often execute and return the document with an online tool like signsend.com. Landlords tracking tenant practices across a medical building also keep current proof of coverage, which is what coisoftware.com handles for certificate-of-insurance tracking. And when a medical building is financed, the lender underwriting the asset reads the same rent and term data, a process supported by lenderanalyzer.com. Get the lease terms abstracted cleanly first, and every one of those downstream steps gets easier.