The single biggest reason small business owners can buy their own real estate is the SBA 504 loan program. It's a Small Business Administration-backed loan structure that allows qualified owner-users to purchase commercial real estate with as little as 10% down, at below-market fixed interest rates, with 25-year amortization.

If you want to advise business owners on real estate, you need to understand SBA 504 cold. It's the financial mechanism that transforms "I can't afford to buy" into "let's run the math."

This lesson covers how it works, who qualifies, how the rates and structure compare to conventional financing, and the practical execution steps.

What SBA 504 is

The SBA 504 loan is a hybrid loan made up of three pieces:

Senior loan from a bank      (50% of project cost)
SBA debenture (CDC)          (40% of project cost)
Owner equity                 (10% of project cost)
                             ___________
Total project cost            100%

That's the standard structure. Three separate funding sources, two of which are loans and one is the borrower's down payment.

The senior loan (50%)

A regular bank loan, first lien on the property, conventional underwriting. The bank assumes the lowest risk because they're in first position. They typically offer competitive rates because the SBA's involvement reduces their risk.

The SBA debenture / CDC loan (40%)

This is the unique part. The SBA partners with non-profit organizations called Certified Development Companies (CDCs) that originate the second-position loan. The CDC's loan is sold into a pool of similar loans, and the pool is backed by the SBA. Investors in the pool buy SBA-guaranteed bonds, which is why the CDC can offer loans at below-market fixed rates.

The CDC loan is in second position, but because it's SBA-backed, the CDC can lend at rates that no bank would offer for a second mortgage. As of 2026, 25-year SBA 504 debentures are pricing in the 5.5-6.5% range fixed for the full 25 years.

That's the magic: 40% of the deal at a long-term fixed rate with no refinance risk.

The owner equity (10%)

The borrower's down payment. Just 10% in most cases — compared to 25% for conventional commercial loans. For special-purpose properties (restaurants, hotels, gas stations) it's 15%. For startups (less than 2 years old) it's 15%.

A 10% down payment is the single most powerful feature of the program. On a $1.5M building, the borrower needs $150K. On a $3M building, $300K. These are amounts that small business owners can actually fund — sometimes from savings, sometimes from a HELOC, sometimes from a partnership with an investor.

The interest rates

In 2026, typical SBA 504 financing looks like:

Bank piece (50%):     7.0% variable, or 7.5% fixed for 5 years then resets
CDC piece (40%):      5.8% fixed for 25 years
Blended cost:        ~6.5% blended rate

The blended rate is typically 50-100 basis points lower than what the same borrower could get on a conventional commercial loan. Plus the 40% piece is fixed for 25 years — eliminating refinance risk on most of the loan.

Compare to conventional financing:

Conventional commercial: 25% down, 7.0-8.0% interest, 5-10 year balloon
SBA 504: 10% down, ~6.5% blended, 25-year amortization with no balloon on the CDC piece

The SBA 504 is dramatically better for any owner-user who qualifies.

Who qualifies

SBA 504 has eligibility requirements. The big ones:

1. The business must be for-profit and meet SBA size standards

Generally less than $5M in net income (after taxes) over the past 2 years and less than $15M tangible net worth. Most small and mid-sized businesses easily fit.

2. The business must occupy at least 51% of the building

For an existing building. For new construction, the minimum is 60% occupancy initially with a plan to reach 80% within 10 years. This is the "owner-user" requirement — you can't use SBA 504 to buy a pure investment property.

The remaining 49% (or 40% for new construction) can be leased out to other tenants. Yes, you can buy a 10,000 SF building, occupy 6,000 SF for your business, and lease the other 4,000 SF to a third-party tenant whose rent helps pay the mortgage.

3. The borrower must be creditworthy

Personal credit score 680+. Business needs 2+ years of operating history (or qualifies as a startup with 15% down). Reasonable debt service coverage based on business cash flow.

4. The property must be eligible

Commercial real estate, ground-up construction, machinery and equipment, or refinancing of existing CRE debt. NOT eligible: investment property, residential, speculative.

5. The borrower must be a US citizen, permanent resident, or qualifying entity

Some restrictions on foreign ownership.

6. Job creation / community impact

The SBA 504 is structured around economic development. The borrower must either create or retain a certain number of jobs, or meet a public policy goal (e.g., minority-owned business, woman-owned business, business in a low-income area, energy efficient building, manufacturing, rural development).

In practice, most small businesses easily satisfy this through job retention. The CDC will help structure the application so the requirement is met.

What it costs

SBA 504 has fees baked in. They're not trivial but they're rolled into the loan, so the borrower doesn't pay them out of pocket at closing. Typical fees:

CDC processing fee: 1.5% of the SBA portion (40% piece)
Funding fee: 0.5% of the SBA portion
Underwriting fee: 0.4% of the SBA portion
Bank fees: typically 0.5-1.5% of the bank portion
Closing costs: appraisal, environmental, legal, title — typically $15-30K total
Servicing fee (annual): ~0.749% on the outstanding CDC balance

Total fees over the life of the loan are higher than a conventional loan. But the lower interest rate and 10% down payment more than compensate.

What's eligible to finance

Beyond just the building purchase price, SBA 504 can finance:

Building purchase
Land purchase (when bundled with the building)
New construction
Renovation and improvements
Machinery and equipment with useful life > 10 years
Refinancing of existing CRE debt (with restrictions)
Eligible "soft costs" — appraisal, environmental, professional fees

This is broader than most commercial loans. A buyer can roll their down payment for renovations + new equipment into the same financing package, often without needing to come up with additional cash.

The 10% down example

Let's see this in action. A medical practice wants to buy an 8,000 SF medical office building for $2.0M.

Project cost                          $2,000,000
Senior bank loan (50%)                $1,000,000
SBA 504 / CDC loan (40%)                $800,000
Owner equity (10%)                      $200,000
                                      __________
                                      $2,000,000

Their out of pocket: $200K. (Plus closing costs of ~$25K, but those can be partly rolled in.)

Compare to conventional financing on the same deal:

Conventional loan (75%)               $1,500,000
Owner equity (25%)                      $500,000
                                      __________
                                      $2,000,000

Conventional requires $500K down. SBA 504 requires $200K. That $300K difference is the practice's working capital they get to keep in the business.

For a small business, this is the difference between "we can't do it" and "let's go."

Comparing the monthly payment

Let's compare the monthly debt service on both options for the same $2M building.

Conventional, $1.5M loan, 7.5%, 25-year amortization: Monthly P&I = ~$11,084 Annual debt service = $133,008

SBA 504, $1.0M bank piece + $800K CDC piece: Bank piece at 7.5%, 25-year amort = $7,389/month = $88,668/year CDC piece at 5.8%, 25-year amort = $5,058/month = $60,696/year Total = $12,447/month = $149,364/year

Wait — SBA 504 has higher monthly debt service?

Yes, because SBA 504 has more total debt ($1.8M vs. $1.5M). The trade-off is: less down payment, slightly higher monthly debt service. The borrower keeps an extra $300K of capital in their business in exchange for paying ~$16K/year more in debt service.

That trade-off almost always favors the borrower. The $300K of capital, kept in the business, generates returns far above $16K/year. And the SBA's fixed-rate 25-year piece eliminates refinance risk on $800K of the loan.

The execution timeline

SBA 504 loans take longer than conventional loans. Plan for:

Application and pre-qualification: 2-4 weeks
Bank underwriting: 4-6 weeks (parallel with CDC)
CDC underwriting: 6-8 weeks
Appraisal, environmental, title: 3-5 weeks
Closing: 8-12 weeks total from accepted offer

Compared to conventional commercial loans (4-6 weeks), SBA 504 is slower. Build the longer timeline into your purchase offer — typically 90 days to close.

Picking a CDC

Different CDCs have different specialties, geographies, and processing speeds. Talk to 2-3 before committing. The good ones:

Have done many deals in your asset class
Process loans efficiently
Have strong relationships with SBA-preferred banks (faster approvals)
Provide hands-on guidance through underwriting
Don't pile on additional fees beyond the standard SBA fees

In Florida, several large CDCs serve the state — Florida Business Development Corporation, Florida First Capital, Empire State CDC. Ask brokers and accountants for referrals.

Special use cases

Buying the building you currently lease

A common scenario: a business has been leasing their space for years and the landlord is willing to sell. SBA 504 is perfect for this — you already know the building, you know the rent you'd be paying, and you can compare it directly to ownership cost.

Constructing a new building

SBA 504 finances ground-up construction with an interim construction loan that converts to permanent financing at completion. This is how many small business owners build custom facilities (medical offices, manufacturing facilities, restaurants).

Refinancing existing CRE debt

SBA 504 can refinance existing commercial mortgage debt under certain conditions, including reducing the borrower's interest rate or lengthening the term. This is helpful for owners who bought with conventional financing and want to extend their term or lock in a lower rate.

Acquiring a building when starting a new location

A growing business expanding to a second location can use SBA 504 to buy the building rather than lease.

When SBA 504 is NOT the right answer

Despite its advantages, SBA 504 isn't always the best fit:

Pure investment properties — not eligible
Buyers who don't qualify (foreign nationals, weak credit, no business history)
Speed-sensitive deals — SBA 504 takes 90+ days; if the seller needs to close in 30 days, conventional is faster
Very large deals — SBA 504 has a max loan size (currently $5M for the CDC piece, more for manufacturing or energy projects). Beyond that, you need conventional or life insurance company financing.
Buyers with abundant capital — for someone who can easily put down 25-30%, the SBA's fees and slower timeline may not be worth the down-payment savings.

What to take away

SBA 504 is the most powerful financing tool for owner-user CRE buyers
Standard structure: 50% bank + 40% SBA debenture + 10% owner equity
Below-market fixed interest rates on the SBA portion (5.5-6.5% in 2026)
25-year amortization with no balloon on the SBA piece
Eligibility: for-profit business, owner-occupies 51%+, creditworthy, US citizen
Trade-off: more total debt and slower closing in exchange for keeping working capital
Talk to 2-3 CDCs before committing
Build 90 days into your purchase offer for closing

Next lesson: building the lease-vs-own model in Excel using everything from this and the previous lesson.

SBA 504 — The Owner-User Superpower