Buying or Building a Medical Office: MOB Financing Basics

Medical office real estate is among the most resilient asset classes in commercial property. Learn how physicians finance a purchase, build-out, or ground-up MOB.

Why Medical Office Real Estate Holds Value

Medical office buildings have outperformed most commercial property types through multiple cycles. Tenants are sticky because relocating a clinic means moving imaging equipment, re-signing patients, and rebuilding referral logistics. Lease terms run long, renewal rates are high, and demand tracks demographics rather than the business cycle.

For a physician owner, that stability compounds. You occupy the building, control your own occupancy cost, and build equity in an asset that a future buyer of your practice will also want. Many physicians find that by retirement the building is worth more than the practice.

Lenders share this view, which shows up in terms. Owner-occupied medical office debt is priced and structured more favorably than most retail or office property, with longer amortization and higher loan-to-value than a comparable general office building would receive.

Purchase Versus Build-Out Versus Ground-Up

Buying an existing medical building is the simplest path. The space is already configured for clinical use, plumbing and electrical are in place, and you can close in 45 to 75 days. Expect to pay a premium over generic office because of the improvements already installed.

Converting general office or retail space is cheaper on a purchase basis but expensive to fit out. Medical build-outs run $150 to $300 per square foot depending on whether you need procedure rooms, imaging, or plumbing to every exam room. A 6,000-square-foot clinic conversion can easily reach $1.2 million in improvements alone.

Ground-up development gives you exactly what you want and typically the best long-term economics, but adds 12 to 18 months and construction risk. It requires a construction facility that converts to permanent financing at completion, and lenders will want a guaranteed maximum price contract with an experienced medical contractor.

Choosing the Right Loan Structure

For owner-occupied medical property, the SBA 504 program is frequently the best economics available. The typical structure places 50% with a conventional lender, 40% with a Certified Development Company at a long-term fixed rate, and requires only 10% from the borrower. That low injection preserves capital for practice operations.

Conventional CRE term financing offers 70% to 80% loan-to-value, twenty- to twenty-five-year amortization, and a faster path to closing. It is the right choice when speed matters, when the project includes significant investor-leased space, or when the borrower prefers to avoid SBA documentation.

For ground-up work, a construction loan with an interest-only draw period converting to permanent debt at certificate of occupancy avoids the risk of building without takeout financing arranged. Angel Funding Group structures both the construction and permanent pieces at the same time so there is no refinancing risk at completion.

Holding the Property in a Separate Entity

Standard practice is to hold the real estate in an LLC separate from the practice entity, with the practice signing a market-rate lease. This separates liability, allows different ownership between the property and the practice, and makes an eventual practice sale far cleaner because the buyer can lease rather than being forced to buy the building.

The lease must be at fair market rent. Below-market rent understates the practice’s true cost and inflates its apparent value in a sale; above-market rent does the reverse and can attract scrutiny. Get a rent comparability study and document it.

This structure also creates flexibility for bringing in partners. Junior physicians can buy into the practice without buying into the real estate, or into the real estate at a different pace, which is often the difference between a workable succession plan and a stalled one.

Underwriting Expectations

Lenders will underwrite the combined obligation of the practice and the property, typically requiring a global debt service coverage ratio of at least 1.20x to 1.25x. Provide three years of practice tax returns and financials, a personal financial statement for each guarantor, the purchase agreement or construction contract, and a payer mix summary.

Environmental and appraisal drive the timeline. Medical properties occasionally carry historical concerns from imaging chemicals or medical waste handling, so budget for a Phase I and be prepared for a Phase II if anything surfaces.

Start the process early. A physician who begins conversations six months before a lease expiration has options. One who starts sixty days out is negotiating from weakness with both the landlord and the lender.