The Reality Gap: When Lease Terms Diverge From Market Income Data

Key Takeaways

A lease is priced on comps. A practice is carried by procedure volume. When those two numbers come from different realities, the spread compounds quietly for the full term.

That spread is the reality gap.

What Is the Reality Gap in Medical Leasing?

Cost-side data — asking rents, comparable deals, escalation norms — describes what other tenants agreed to pay in similar buildings. Income-side data describes what the surrounding market actually produces: CPT and HCPCS volume, DRG activity, ICD-10 diagnosis patterns within a drive-time geography.

A data-driven retailer never confuses the two. Rent comps tell the retailer what the last tenant signed; SKU-level demand tells it whether the location can carry that rent. Medicine has the exact equivalent, and the CPT code is the SKU.

The gap appears when lease terms are underwritten entirely from the first dataset while the second one moves in a different direction.

Why Do Lease Terms Drift From Market Income Data?

The two datasets update on different clocks.

Comps reprice fast — quarterly, sometimes monthly. Clinical demand shifts slowly and without a press release: outpatient migration favors one specialty, provider density thickens in another, a procedure category flattens across a region.

Meanwhile the lease keeps its own calendar. Fixed annual escalations compound whether or not the market's procedure activity does. A ten-year term signed against last year's comps carries this decade's clinical trendline — whatever it turns out to be.

Cost-Side Term Driver	Income-Side Reality Check
Comparable lease rates in the submarket	Procedure volume trajectory in the drive-time area
Fixed annual escalation schedule	Specialty-level demand trend, year over year
Term length matched to landlord norms	Provider density and saturation over the same horizon
TI allowance per square foot	Whether market procedure mix supports the buildout type

Same building. Same comps. Two very different underwriting stories.

Where the Gap Shows Up

Consider a market — framed as a hypothetical — where a specialty's regional volume has been flat for three years while submarket rents kept climbing on the strength of other tenant categories. Every comp says the lease is at market. The income-side data says the market that pays that rent is not growing underneath it.

Neither dataset is wrong. They are measuring different things. This is the same blind spot covered in why demographics and traffic counts miss clinical demand — the visible data is accurate and still incomplete.

Can the Gap Be Measured Before Signing?

The inputs exist. Market-level procedure activity, ranked and expressed in volume and percentile terms, can be laid directly beside proposed lease terms — the same way the income-side market data models at MedicalRealEstateCalculator.com structure it, and the same baseline logic explored in what income-side market conditions actually measure.

Rent is a fixed cost. Procedure volume is what pays it. A lease evaluated against only one of those numbers is half-underwritten.

Reports start at $499, any specialty, any U.S. market. The data shows what the market is doing — and your report is customized to your direction, because no one knows what your practice needs better than you.

Frequently Asked Questions

1. How do I know if my lease terms match my market's actual demand?

   Market-level procedure data — CPT, HCPCS, DRG volume within a drive-time geography — can be compared against a lease's term length and escalation schedule. The comparison shows whether the market's clinical activity is trending with, ahead of, or behind the cost curve built into the lease. It is a market-data comparison, not a review of any practice's own billing.

2. Are rent comps enough to evaluate a medical office lease?

   Comps establish what similar space has leased for, which answers the cost question. They do not describe the clinical demand surrounding the site — the volume and mix of procedures the market documents. Both datasets are relevant; only one is typically on the table during negotiations.

3. What data shows whether a market can sustain a long-term lease?

   Longitudinal, de-identified market indicators: procedure volume trends by specialty, provider density over time, outpatient migration patterns, and diagnosis-pattern shifts in the surrounding geography. Where private-pay claims data such as Alpha Sophia is used, it reflects private-pay activity and does not include Medicare Part B.

Author

David Rutson

Founder & Principal Advisor • Globe Medical Realty Advisors

Represented independent physicians and non-hospital-owned groups exclusively for over 25 years across 48 states.