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  4. /Medical Office Lease

Medical Office Lease: CAM Audit Guide

Last updated: April 2026

By Angel Campa, Founder

Medical Office Lease tenants face specific billing risks tied to how expenses are allocated and reconciled. The most common error appears in the section below. CAMAudit runs 14 forensic detection rules on your reconciliation statement to identify every recoverable dollar.

Most Common Overcharge

Standard office or retail tenants subsidizing medical tenants' specialized expenses. When bio-hazardous waste removal, high-amperage electrical infrastructure, or specialized plumbing maintenance for a surgical center is billed through the general CAM pool, every tenant in the building pays for those specialized costs, not just the medical tenant that generated them.

What Is a Medical Office Lease?

A specialized commercial lease for medical, dental, and healthcare outpatient facilities. Typically structured as either NNN or Full Service Gross with significant additional provisions for: heavy utility usage (plumbing, power for medical equipment), bio-hazardous waste disposal, ADA compliance for patient access, specialized janitorial requirements, and after-hours HVAC for patient care hours that extend beyond standard business hours.

Medical Office Lease Expense Pass-Throughs

Varies by structure (NNN or FSG), but medical leases add unique pass-through categories: specialized janitorial for infection control, bio-hazardous waste removal for heavy-use tenants, above-code plumbing maintenance, high-power electrical circuits for imaging equipment, and extended HVAC hours. The risk of cross-subsidy, standard office tenants paying for heavy medical users' specialized expenses, is significant.

Medical Office Lease CAM Calculation & Billing

Standard NNN or FSG CAM mechanics apply, but the reconciliation must segregate medical-specific expenses from standard office/retail expenses. Utility submetering is critical because medical tenants consume dramatically more electricity and water than standard office tenants. Without submetering, a single MRI suite can inflate the entire building's utility pass-through.

Red Flags to Watch

  • ▶Utility bills allocated by square footage rather than actual submetered consumption
  • ▶Bio-hazardous waste removal appearing in the shared CAM pool
  • ▶ADA compliance capital upgrades (elevator installation, restroom remodel) amortized through CAM
  • ▶After-hours HVAC billed as a flat rate significantly above the actual utility cost per hour
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Check Your Medical Office Lease for These Overcharges

Upload two PDFs. 14 detection rules. Under 15 minutes. Free.

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Audit Focus

Demand utility submetering to isolate each tenant's actual consumption. Review janitorial invoices to identify medical-specific cleaning services (operating room-grade disinfection) and ensure those costs are not pooled into the general CAM. Audit bio-hazardous waste disposal invoices to confirm only the generating tenant bears those costs. Verify ADA compliance capital costs are excluded from CAM.

Common Industries

  • →Medical and dental clinics
  • →Ambulatory surgical centers
  • →Imaging and radiology centers
  • →Physical therapy and rehabilitation
  • →Specialty medical offices

Explore Other Lease Types

Triple Net Lease (NNN)Double Net Lease (NN)Single Net Lease (N)Modified Gross LeaseFull Service Gross Lease (FSG)Absolute Net LeaseGround LeasePercentage LeaseIndustrial Gross LeaseRetail LeaseOffice LeaseRetail Net Lease (NNN Retail)Flex Space LeaseBondable Net Lease
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Don't Overpay on Your Medical Office Lease

Upload two PDFs. 14 detection rules. Under 15 minutes. Free.

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Related Guides

IndustriesGuide
Medical Office CAM Charges: Benchmarks and Overcharge Types
IndustriesGuide
Medical Office NNN Lease Traps: HVAC, Insurance
IndustriesGuide
Dental Office Lease: Why Am I Paying for the Entire Building's HVAC?
IndustriesGuide
Dental Office Lease Costs: Why Your CAM Bill Is Higher Than It Should Be

Explore Related Resources

Tenant TypeMedical OfficeTenant TypeDental OfficeLease ClauseQuiet Enjoyment ClauseLease ClauseTenant Improvement Allowance ClauseScenarioMedical office: after-hours HVAC billed to all tenants as CAMScenarioMy CAM reconciliation just went up 30% or more year over year

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Related Resources

ResourcesCAM Audit by Tenant TypeToolsFree CAM Audit ToolsGlossaryCAM GlossaryToolsPro-Rata Share Calculator

Related Articles

  • Medical Office CAM Charges
  • Medical Office NNN Lease Traps

Frequently asked questions

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This page provides general educational information. It is not legal advice and may not reflect the most current law in your state. Consult a licensed attorney for advice specific to your situation.