What Defines Medical Office & Healthcare Real Estate
Medical office buildings (MOBs) and related healthcare real estate lease space to physician groups, outpatient clinics, imaging and surgery centers, and health systems rather than typical general-office tenants. These uses demand specialized construction - plumbing and drains for exam and procedure rooms, reinforced or lead-lined walls for imaging equipment, medical gas lines, backup power, and higher structural and electrical capacity - that sets medical office apart from conventional office space both in cost and in tenant stickiness.
How It Makes Money
Medical office rents are typically structured as modified gross or triple net (NNN) leases, with tenants reimbursing some or all operating expenses, and asking rates commonly command a premium to general office space to reflect the specialized build-out and generally lower turnover. Ancillary income is limited compared with hospitality or self-storage - value here is driven primarily by contract rent, lease term, and tenant credit rather than transactional or usage-based revenue streams.
Tenant Credit Quality and Lease Term Considerations
Tenant credit quality varies widely, from large, well-capitalized health systems and hospital-affiliated practices to smaller independent physician groups whose creditworthiness depends on the practice's own patient volume and reimbursement mix. Because tenant improvements are expensive, medical office leases commonly run longer than typical office leases for anchor healthcare tenants, giving the landlord time to recover build-out costs and the tenant certainty over a space it has invested heavily to customize. Underwriting should weigh not only the anchor tenant's credit but also succession risk in smaller physician-owned practices, where a founding doctor's retirement or a group's consolidation into a larger system can trigger vacancy.
Build-Out Costs and Proximity to Hospital Campuses
MOBs are often categorized as on-campus (attached to or immediately adjacent to a hospital) or off-campus (standalone in the surrounding community). On-campus buildings benefit from direct referral patterns, shared patient traffic, and closer integration with a hospital's service lines, which investors often view as a stabilizing factor. In both cases, the high cost of specialized tenant improvements works in the landlord's favor after lease-up: relocating a built-out medical suite is disruptive and expensive for a provider, which tends to reduce turnover relative to standard office space.
Underwriting and Financing Considerations
Stabilized medical office assets anchored by strong health-system credit and located on or near a hospital campus tend to attract life insurance companies and other institutional long-term lenders seeking durable, credit-backed cash flow. Smaller, physician-owned or off-campus buildings are more commonly financed through banks and credit unions, and an owner-occupied practice may qualify for an SBA loan. Larger, diversified medical office portfolios can also be financed through CMBS. Across all financing types, lenders look closely at the lease rollover schedule, the reimbursement structure, and how specialized - and therefore re-leasable - each suite's build-out really is.
Typical Tenants
- Physician and specialist practices (e.g., orthopedics, cardiology, dermatology)
- Outpatient surgery and imaging/diagnostic centers
- Hospital-affiliated clinics and urgent care
- Dental and other allied health providers
- Health system administrative and back-office space
Key Underwriting Metrics
- Weighted average lease term (WALT) and tenant credit mix
- Tenant improvement / build-out cost per square foot
- Proximity and affiliation to a hospital or health system
- Lease rollover schedule and specialized-space re-tenanting risk
- Expense reimbursement structure (NNN vs. modified gross)
Major Risks
- Single-practice tenant concentration, retirement, or group dissolution
- High cost and long timeline to re-tenant specialized suites
- Reimbursement or regulatory changes affecting tenant profitability
- Competition from new health-system-owned facilities
- Hospital system relocation or campus consolidation
Typical Lender Fit
- Life insurance companies for stabilized, credit-tenant, on-campus assets
- Banks and credit unions for smaller physician-owned or off-campus buildings
- CMBS for larger, diversified medical office portfolios
- SBA loans for owner-occupied physician practice buildings
On-Campus vs. Off-Campus Medical Office (Illustrative Comparison)
| Feature | On-Campus MOB | Off-Campus MOB |
|---|---|---|
| Typical Location | Attached to or adjacent to a hospital | Standalone in the surrounding community |
| Referral Pattern Benefit | Direct hospital referral and shared patient traffic | Relies more on independent patient sourcing |
| Common Tenant Type | Hospital-employed physicians and specialists needing hospital access | Independent practices, primary care, dental |
| General Investor Perception | Often viewed as more stable due to hospital affiliation | Valued more on standalone tenant credit and lease term |
Build-Out Cost Cuts Both Ways
Heavy medical tenant improvements raise upfront leasing costs and typically require longer lease terms to amortize, but they also increase tenant retention because relocating specialized medical space is expensive and disruptive for both the provider and its patients.
Module Check
Compared with typical general office tenants, medical office tenants such as physician groups most often sign leases that are: