A triple net lease can look straightforward on a medical office listing: base rent plus the tenant’s share of property taxes, building insurance and operating expenses. The difficult part is that the base rent does not tell you the total cost of occupying the space.
For a medical practice, those additional costs can affect staffing plans, equipment purchases and cash flow for years. The lease also needs to account for specialized buildouts, heavy utility use, patient access and systems that ordinary office tenants may not require.
Before signing, compare the full occupancy cost and the responsibilities assigned to each party. The words “triple net” are only a starting point. The lease language controls.
What is a triple net lease?
In a triple net, or NNN, lease, the tenant pays base rent plus an allocated share of three broad property expenses:
- Real estate taxes
- Building insurance
- Common-area maintenance and other operating expenses
The lease should explain how the tenant’s share is calculated, which expenses are included, how estimates are reconciled with actual costs and whether the landlord may charge administrative or management fees. Utilities, janitorial service, security and other costs may be billed separately or included in an operating-expense category. That varies by property and lease.
A tenant should therefore compare the estimated total occupancy cost, not base rent alone.
Potential advantages for medical tenants
A clearer view of property expenses
A well-written NNN lease can show how operating expenses are allocated and reconciled. The tenant can review the expense categories, past statements and supporting documents instead of relying only on a single rental rate.
That transparency is useful only when the lease gives the tenant meaningful reporting and audit rights. Ask how often statements are issued, how long you have to question them and what records the landlord must provide.
Potentially lower base rent
Because the tenant pays a share of property expenses separately, the quoted base rent may be lower than it would be under a full-service or modified-gross lease. This does not automatically make the NNN lease less expensive. Compare both structures using the same assumptions and the same lease term.
More visibility for budgeting
Historical operating statements, tax bills and insurance information can help a practice build a more realistic occupancy budget. They can also reveal whether recent estimates are unusually low or whether major increases have already occurred.
Risks and disadvantages to examine
Operating expenses can rise
Taxes, insurance premiums, utilities, maintenance contracts and repair costs can change during the lease. A low first-year estimate may not reflect later reconciliations or future increases.
Request several years of operating-expense history when available. Review the property’s current budget and ask about known assessments, insurance changes, tax appeals, planned repairs and deferred maintenance.
Expense definitions may be too broad
Not every cost of owning or improving a building should automatically become a tenant expense. The lease should distinguish routine operating costs from capital replacements, structural work, costs caused by another tenant and expenses that primarily benefit the landlord.
Medical users should pay particular attention to roofs, foundations, exterior walls, elevators, central building systems and HVAC equipment. Responsibility for repair, replacement and code compliance should be stated clearly.
Medical buildouts create additional exposure
Medical offices often require plumbing, electrical capacity, HVAC performance, shielding, backup power, accessibility improvements or other specialized work. The lease should identify who owns and maintains each system, what happens when equipment reaches the end of its useful life and whether the tenant must remove improvements when the lease ends.
Coordinate the lease review with the practice’s medical office planning before construction commitments are made.
Reconciliations can produce unexpected bills
Tenants commonly pay estimated expenses during the year. The landlord later compares those payments with actual costs. If the estimate was low, the tenant may receive an additional bill.
Review the calculation method, exclusions, supporting documentation and deadlines. A periodic commercial lease audit can help identify billing errors or costs that do not match the lease.
NNN lease costs to compare
Use the same worksheet for every property under consideration. At minimum, include:
- Base rent and scheduled increases
- The current NNN or operating-expense estimate
- Historical reconciliations and expense increases
- Utilities, janitorial service, waste handling and security
- HVAC operating, maintenance and replacement costs
- Tenant improvement costs and allowances
- Parking, signage and after-hours access charges
- Repair, maintenance and restoration obligations
- Insurance required of the tenant
- Renewal, expansion and early-termination provisions
For Florida practices, one historical cost has changed. Florida’s sales tax on commercial rent was repealed for rental or occupancy periods beginning October 1, 2025. The Florida Department of Revenue explains the repeal and its effective date. Confirm how any older charges or special arrangements apply to your situation.
Terms worth reviewing before you sign
There is no universal cap, dollar allowance or lease length that is right for every medical tenant. The appropriate terms depend on the property, the condition of its systems, the buildout investment and the practice’s plans.
Review these questions with your real estate adviser and attorney:
- Which expenses are included, and which are expressly excluded?
- How is the tenant’s proportionate share calculated?
- Can controllable operating expenses be capped, and how is the cap calculated?
- Who pays for structural repairs and major building-system replacements?
- Does the tenant have the right to inspect statements and audit charges?
- How are vacancies, changes in building occupancy and mixed uses handled?
- What happens if the premises cannot support the required medical use?
- Who is responsible for code, accessibility and regulatory improvements?
- How do renewal options, relocation rights and restoration duties affect the practice?
Are NNN lease payments tax deductible?
The IRS generally allows a business to deduct rent paid for property used in the business, subject to applicable rules and the taxpayer’s circumstances. Other occupancy expenses may receive different treatment, and some improvements may need to be capitalized rather than deducted immediately. See the IRS Tax Guide for Small Business and consult a qualified tax adviser about your lease.
Is a triple net lease right for your practice?
An NNN lease can work well when the total cost is competitive, the expense history is understandable and responsibilities are allocated clearly. It can be a poor fit when the property has deferred maintenance, estimates are incomplete or the lease shifts open-ended building risks to the tenant.
The decision should be based on the practice’s full occupancy cost, buildout requirements and long-term plans. HC Realty Group helps healthcare organizations evaluate locations, compare lease structures and negotiate medical real estate terms. Learn more about our corporate healthcare real estate services or contact our team to discuss a Florida medical office requirement.
This article provides general real estate information and is not legal or tax advice. Consult qualified legal and tax professionals regarding your circumstances.
