Buying the building your business occupies converts a monthly rent expense into equity. The SBA 504 loan was designed for exactly that scenario — it lets qualifying business owners put as little as 10% down on commercial property while locking in a below-market fixed rate for 10, 20, or 25 years. I work on a fair number of owner-occupied commercial deals, and most borrowers I talk to initially underestimate how competitive the 504 terms are compared to a conventional commercial mortgage.
If your business is currently leasing its space and you’re evaluating a purchase, this guide breaks down how the program works, what you need to qualify, and where deals tend to get tripped up.
What You’ll Learn
- How the SBA 504 loan is structured — the three-piece financing stack
- Business and property eligibility requirements
- Current SBA 504 rates in 2026
- How the 504 compares to a conventional commercial mortgage and SBA 7(a)
- Realistic timeline from application to closing
- Where deals most commonly stall
What Is an SBA 504 Loan?
The SBA 504 program is a federal lending initiative administered through the U.S. Small Business Administration that provides long-term, fixed-rate financing for major fixed assets — primarily owner-occupied commercial real estate. The program is for business owners buying the property they operate out of, not investors acquiring property for rental income.
The maximum CDC loan amount is $5.5 million, though your total project cost can exceed that because the first-lien bank piece isn’t capped by the SBA. For most small business acquisitions — an office building, medical practice space, warehouse, or retail location — that ceiling covers a lot of ground.
How the SBA 504 Loan Is Structured
The 504 is a three-party financing stack:
- 50% — Conventional bank (first lien). A traditional bank or credit union holds the senior position, underwritten on its own terms.
- 40% — Certified Development Company / SBA (second lien). A CDC — a nonprofit lender authorized and regulated by the SBA — funds the junior piece at the SBA-backed fixed rate.
- 10% — Borrower equity. Your down payment. For startup businesses or special-use properties, equity requirements increase to 15–20%.
On a $2M acquisition: the bank funds $1M at its own rate, the CDC funds $800,000 at the fixed SBA rate, and you bring $200,000 to the table. Two separate loan payments, though most borrowers set both to auto-draft.
Who Qualifies for an SBA 504 Loan?
The SBA sets the eligibility criteria. Your business must:
- Operate as a for-profit entity in the United States
- Have a tangible net worth of less than $20 million
- Have average after-tax net income of less than $6.5 million over the two preceding years
- Meet SBA size standards for a small business
- Show a feasible business plan and demonstrated ability to repay
The occupancy requirement is the one I see borrowers overlook most: your business must occupy at least 51% of an existing building or 60% of new construction. If you’re buying a mixed-use building and your business only needs 40% of the space, the 504 won’t work.
Personal credit matters too. Most banks want to see 680+, though I’ve placed deals in the 660s when business cash flow was strong and the borrower had meaningful liquidity.
What Properties Are Eligible?
Eligible uses include:
- Purchase of an existing commercial building
- Purchase of land and construction of a new facility
- Renovation or expansion of an existing owner-occupied property
- Purchase of long-term machinery or equipment (useful life of 10+ years)
What the program doesn’t cover: working capital, inventory, investment properties held purely for rent, or speculative land.
SBA 504 Loan Rates in 2026
The CDC piece carries a below-market fixed rate tied to the 10-year U.S. Treasury at debenture issuance. As of May 2026, effective SBA 504 debenture rates were approximately:
| Term | Effective Rate (May 2026) |
|---|---|
| 10-year | ~5.67% |
| 20-year | ~5.91–6.01% |
| 25-year | ~5.85–5.95% |
These are all-in effective rates including SBA, CDC, and central servicing agent fees. On most deals we work, the blended cost of the full stack comes out below what a standalone conventional commercial mortgage would be at comparable leverage.
SBA 504 vs. Conventional Commercial Mortgage vs. SBA 7(a)
| Feature | SBA 504 | Conventional Commercial | SBA 7(a) |
|---|---|---|---|
| Down payment | 10% (15–20% startups/special use) | 20–30% | 10–15% |
| Rate type | Fixed (CDC) + bank rate | Fixed or variable, balloon | Variable (prime + spread) |
| Max SBA loan | $5.5M CDC piece | No federal cap | $5M |
| Term | 10, 20, or 25 yrs — no balloon | 5–10 yr + balloon | Up to 25 yrs for RE |
| Occupancy required | 51% owner-occupied | None | 51% owner-occupied |
| Close time | 60–90 days | 45–60 days | 60–90 days |
| Working capital included | No | Negotiable | Yes |
The 504 is the right call when fixed-rate certainty and lower down payment matter most. The 7(a) is more flexible but rates float with prime. Conventional works best when you want a cleaner, faster close without occupancy restrictions.
From Application to Closing: What to Expect
Most SBA 504 loans close in 60–90 days from a complete application:
- Weeks 1–2: Bank and CDC preliminary underwriting, application intake
- Weeks 2–5: Appraisal (almost always the longest single item — 3–4 weeks)
- Weeks 3–6: Parallel underwriting by bank and CDC; environmental review if needed
- Post complete package: SBA approval typically in 5–10 business days
- Final weeks: Title, closing docs, funding
Budget 75 days and you’ll rarely be caught short. If you’re under a purchase contract with a 45-day financing contingency, get the extension conversation started early — 504s in 45 days require everything to move without friction.
Evaluating an owner-occupied commercial purchase? We work with banks and CDCs nationally and can help structure the full stack from day one. Schedule a 15-minute call →
From a Recent Deal
From a recent deal: I worked with a medical practice looking to buy the office space they’d been leasing for several years — roughly 4,000 square feet in a professional building. The sellers wanted a 60-day close, which made conventional the theoretically cleaner path. But the practice’s principals wanted a fixed 25-year payment and didn’t want balloon refinance risk a decade out. We went 504 — the bank piece moved fast because the practice had strong financials, and the CDC approved quickly once the appraisal came back. The blended monthly payment came in below what they’d been paying in rent.
If you’re a business owner evaluating a purchase, we can usually give you a realistic picture of the stack, rate, and timeline within 24 hours. Get a quote →
Frequently Asked Questions
Can I use an SBA 504 loan to refinance commercial real estate I already own?
Yes, under specific conditions. The SBA 504 has a debt refinancing option for owner-occupied properties where proceeds primarily refinance existing debt tied to the real estate. The rules around “qualified debt” are specific — a CDC or experienced broker can walk you through eligibility.
What’s the minimum credit score for an SBA 504 loan?
The SBA doesn’t set a hard minimum, but most banks want 680+ from the business owner(s). I’ve placed deals in the 660s when business cash flow was strong and the borrower had meaningful liquidity.
Can a startup business get an SBA 504 loan?
It’s harder, but not impossible. Startups typically face 15–20% down rather than 10% and tighter scrutiny since there’s no operating history. Personal financial strength and industry experience carry more weight.
How does the 504 handle special-use properties?
Properties with limited alternative uses — restaurants, gas stations, car washes, assisted living facilities — often require 15–20% down. The reasoning: the lender’s collateral appeals to a narrower buyer pool if the business fails. I flag this early so borrowers aren’t surprised at the term sheet stage.
Do I need to work with a broker for an SBA 504 loan?
No — you can go directly to a CDC or a bank with SBA experience. That said, the three-party structure means coordinating three separate underwriting processes at once. A broker who closes 504 deals regularly adds value in keeping all three moving simultaneously.
Ready to finance your owner-occupied commercial property?
We’re a commercial mortgage brokerage serving business owners and investors nationally, with active relationships across SBA 504, SBA 7(a), conventional commercial, and bridge lending programs. Send us your scenario — we’ll respond within one business day with realistic terms.
This article is for informational purposes only and does not constitute financial, legal, or tax advice. Loan terms, rates, and availability vary by borrower, property, and market conditions. Consult Willowbrook Capital for scenario-specific guidance.
