SBA 504 Loans for Medical Office Buildings: The Physician's Guide

One of the most consistent wealth-building moves in medicine is buying your own building. Instead of paying a landlord, you pay yourself. Instead of facing lease renewals at market rates, you control your occupancy costs for decades. SBA 504 makes this accessible with just 10% down instead of the 25–30% a conventional commercial loan requires.

Why Physician-Owned Real Estate Works

A physician practice paying $8,000/month in rent can instead pay that to a real estate entity they own. After debt service, the real estate entity has cash flow and builds equity. When the physician retires and sells the practice, the real estate is a separate asset — often worth more than the practice itself.

The math for a $1.2M medical office building purchase:

Conventional loan (25% down): $300K down, ~$8,500/month payment

SBA 504 (10% down): $120K down, ~$7,200/month combined payment

The physician who uses 504 keeps $180K in their practice for equipment or working capital and locks in a portion of the rate as fixed for 20 years.

How SBA 504 Works for Medical Real Estate

SBA 504 is a three-party structure:

Conventional lender (50%): First lien on the property, their rate (currently ~7.5–9% variable or fixed short-term)

CDC — Certified Development Company (40%): SBA-backed debenture at fixed rate (~6.5–7.2% for 20 years)

Borrower (10%): Down payment

For a $1.5M medical office building:

Conventional lender: $750K

CDC: $600K at fixed 6.8% for 20 years

You: $150K

The blended rate across both tranches is typically well below a conventional 25%-down loan on a 15-year term.

Occupancy Requirement: The Key Rule

You must occupy at least 51% of the building as a for-profit operating business. For physicians buying a building for their own practice, this is easily met. You can rent out remaining space to other medical tenants — this is common and generates additional income.

A common structure: physician buys a 6,000 sq ft building, occupies 3,500 sq ft for their practice, rents 2,500 sq ft to a physical therapy practice or medical spa. The rental income helps cover debt service.

Building Types That Work for Medical 504

Medical office buildings (MOBs): Standard outpatient office space adapted for clinical use

Specialty-purpose medical facilities: ASCs, imaging centers, dialysis centers — these are "special purpose" under SBA rules and require 15% down instead of 10%

Mixed-use medical: Ground-floor clinic with office above

Existing buildings being converted to medical use: Tenant improvement costs can be rolled into the 504 project

Note: Special-purpose buildings (single-purpose design like a surgery center) require 15% down. Buildings with multiple potential uses (standard MOB) require 10%.

What Documentation Medical Real Estate Deals Require

The property:

Purchase agreement or letter of intent

Property appraisal (ordered by lender after application)

Phase I environmental assessment (standard for all commercial real estate)

Survey and title report

Current lease rolls (if tenants exist)

The borrower:

3 years business tax returns (practice entity)

3 years personal tax returns

Personal financial statement

Practice financial statements (P&L, balance sheet)

Proof of owner-occupancy intent (practice lease or agreement to occupy)

The project:

If construction/renovation: architect plans, contractor bids, construction timeline

Timeline for Medical Real Estate SBA 504

SBA 504 real estate deals take 60–90 days from application to closing. Two lenders must underwrite simultaneously (the conventional lender and the CDC), and SBA authorization adds 10–15 days.

On the buy side, this means you need to negotiate a closing timeline of 60–75 days with the seller. For medical office properties, sellers are accustomed to longer timelines — few physicians are paying cash for commercial real estate.

Refinancing Medical Real Estate with SBA 504

SBA 504 refinancing is available for existing medical office real estate. You can refinance a conventional commercial mortgage into a 504 structure if:

The loan has been outstanding for at least 2 years

The property has sufficient equity (typically 20%+)

You remain in occupancy

Refinancing into 504 makes sense when current conventional rates are substantially above the 504 CDC fixed rate, or when you want to pull out equity for renovations or equipment.

Get pre-approved for your medical office building purchase at 3A Lending →