Medical Office Buildings

How it works

Tenants in a medical office building are physician practices, ambulatory surgery centers, imaging providers, dialysis operators, and outpatient departments run directly by a health system. The building's location falls into one of two categories: on-campus, sitting on or beside a hospital, often on land ground-leased from the health system itself, or off-campus, placed in retail-adjacent locations chosen for patient convenience and drive-time rather than proximity to the hospital.

The interior build-out is not generic office finish. Each exam room needs plumbing, medical gas lines run to specific rooms, imaging suites need lead-lined walls, equipment areas need reinforced floors, and HVAC and medical waste systems have to meet clinical codes. Much of this is paid for jointly by landlord and tenant, and once installed it is expensive to remove or repurpose.

That sunk cost is what makes tenant retention structurally higher than in conventional office. A practice that relocates loses its build-out, faces new permitting, and risks losing patients who are used to a location. Leases reflect this: terms run several years, structured as net or modified gross with fixed escalations, and the leases that price closest to a credit-tenant deal are the ones backed by a health system's own guarantee rather than an independent physician group.

Because hospitals are frequently a landlord or tenant counterparty, federal physician self-referral rules (Stark Law) and anti-kickback rules require that rent be set at fair market value, independent of the volume or value of referrals between the parties. That constraint shapes lease negotiation whenever a hospital is on either side of the deal.

What it pays

Return is quoted as a cap rate on net operating income, the same convention used across commercial real estate. Rent per square foot in medical office typically exceeds conventional office in the same submarket, reflecting the cost of the clinical fit-out and the value of a location patients already know.

Pricing is driven less by the headline rent than by the tenant's retention history and the weighted average lease term remaining on the rent roll. A building full of specialists who have stayed a decade prices differently than one with a shorter, thinner lease stack even at the same current rent.

The credit standing of the entity behind the lease matters directly. A lease guaranteed by a large health system compresses the cap rate toward what a single-tenant net-lease credit deal would command; a lease with an independent single-physician practice, with no system guarantee, carries a wider cap rate to compensate for that counterparty risk. Escalations are generally fixed annual percentage bumps written directly into the lease rather than tied to an index.

Buildings on hospital-owned ground carry an additional discount relative to fee-simple ownership of similar quality, because the leasehold has a finite life and the land — along with everything ultimately reverts to the hospital as ground lessor.

Costs and taxes

Operating costs run above plain office. Clinical tenants often keep longer hours, code-required air-change rates raise HVAC load, medical waste has to be handled and disposed of under separate contracts, and cleaning standards are more intensive than a standard office suite.

Tenant improvement allowances are large in absolute dollar terms per lease, even though turnover is infrequent, because clinical fit-out is expensive per square foot compared to a general office buildout.

For US tax purposes, the building depreciates over 39 years, but a meaningful share of the improvements — specialized plumbing runs, built-in casework, equipment supports and similar components — have much shorter recovery periods and can be identified through a cost segregation study, accelerating deductions. Depreciation recapture applies on sale, and gain can be deferred through a 1031 exchange into another qualifying property.

Parking requirements for clinical uses generally run higher than for general office, which adds to both land needed and ongoing maintenance. Where the building sits on a hospital-owned ground lease, ground rent — and the escalation clause governing it — is a fixed and permanent expense line for the life of the lease.

Liquidity and time commitment

A defined pool of buyers — healthcare-focused REITs, specialist private funds and institutional investors — keeps well-located, well-leased medical office buildings reasonably transactable relative to most commercial real estate, though sale timelines still run months rather than days. Assets on hospital ground leases sell to a narrower slice of that pool, and price is more sensitive to how much term remains on the ground lease itself.

Owning directly is a moderate day-to-day commitment. There are typically more tenants per building than in a single large office lease, and clinical tenants have higher service expectations around HVAC, cleanliness and building hours.

Leasing space in these buildings takes healthcare-specific knowledge: understanding practice economics, referral patterns between specialties, and the fair-market-value constraints on rent where a hospital is a party. This is not a market where a generalist office leasing broker necessarily has the right relationships.

Healthcare REITs and non-traded funds offer a route into the same underlying rent stream without any of the direct management or leasing work, in exchange for giving up control over which buildings and tenants make up the portfolio.

How it goes wrong

Health system consolidation is the risk most specific to this asset type. A practice underwritten as sticky can still move if the parent health system acquires it and relocates it into a system-owned building, vacating space that looked secure at underwriting.

Reimbursement pressure on physician practices squeezes the tenant's economics directly. A practice under margin pressure may renew at a lower rent, ask for concessions, or not renew at all, and the landlord has limited ability to backfill quickly given the specialized space.

Shifts in how care is delivered — more telehealth, more procedures moving to different settings — can reduce the number of exam rooms a given group of physicians needs, shrinking demand even where the practice itself stays intact.

A vacated clinical suite is expensive to convert to a different specialty's requirements and is close to unusable as ordinary office space without a costly gut renovation, which limits the pool of prospective replacement tenants and lengthens vacancy.

Fair market value rent requirements are a compliance risk, not just a pricing constraint, wherever a hospital sits on either side of a lease; getting it wrong carries regulatory consequences beyond a bad rent number. Ground leases add a separate, slow-moving risk: as the remaining term runs down, the leasehold's value erodes well before the lease actually expires.