How SBA 504 loans work: two loans, one project
A 504 is not one mortgage. It is a bank loan and an SBA backed second stacked on the same property, which is exactly why you only put 10% down. Here is the whole structure with real numbers.
Free and confidential. No application, no credit pull, no sales call.
One project, three sources of money
Unlike an SBA 7(a) loan or a conventional commercial mortgage, an SBA 504 is not a single loan. It is two loans funded against the same project at the same time, plus your down payment. That sounds complicated the first time you hear it. In practice it closes a lot like any other commercial real estate deal, and the split is the entire reason you can buy a building with 10% down instead of 25% or 30%.
The senior loan is senior because it holds the first lien on the real estate or equipment being financed. The SBA second is junior because its lien sits behind that one. People often call the SBA portion "the debenture." That is not quite right: the debenture is the bond the SBA sells each month to raise the money. The loan you sign is a 504 second mortgage, and the debenture is how it gets funded.
What the split looks like on your project
Say you have run a day care in Georgia for five years and you have a second center under contract for $2 million. Move the slider to your own number and watch the three pieces move.
Assumes the standard 50/40/10 structure, a 7.25% first mortgage, the 6.27% 25 year debenture, and 25 year amortization on both. Your real numbers move with your credit, your property type, and the month you close. Want to model it in detail? Open the full 504 calculator.
The two loans are not the same loan twice
They have different lenders, different lien positions, different rate behavior, and different servicers. Knowing which is which makes every conversation on your deal easier.
| Senior loan (TPL) | SBA second | |
|---|---|---|
| Share of project | About 50% | About 40% |
| Who funds it | Bank, credit union, or private lender | SBA, through a CDC and a monthly bond sale |
| Lien position | First | Second |
| Rate | Fixed or variable, set by the lender | Fixed for the full term, set at the bond sale |
| Term | Commonly 10 to 25 years | 10, 20, or 25 years |
| Funds at | Closing | The next debenture sale after closing |
| Who services it | The private lender | The CDC, for the life of the loan |
Both loans are underwritten against the same project and close together. You are not applying twice.
Four parties, and only one of them calls you
Bring the 10%, the tax returns, and the financials. Sign twice at closing, then make two payments a month.
Structures the deal, funds the first mortgage, orders the appraisal and environmental work, and quarterbacks the CDC and the SBA on your behalf.
An SBA licensed nonprofit that underwrites the SBA portion, determines eligibility, hires the closing attorney, and services the second for the life of the loan.
Approves the loan and funds the second through the monthly debenture sale. You will almost certainly never speak to them.
Do I call a bank or a CDC first?
Neither, if you pick the right lender to begin with. Most owners start with the bank they already use for deposits. It costs nothing to ask, but be aware that many business bankers have never done a 504, and the ones who know SBA often know only the 7(a) program. That is how a project that belonged in a 504 ends up in a 7(a) at a higher rate.
A lender who specializes in 504 already has working relationships with CDCs across the country, so you do not have to go find one. More on what a CDC does, or browse CDCs by state.
The five stages of a 504, from inquiry to funding
Typically 60 to 120 days end to end. Both loans move on parallel tracks and land on the same closing table.
-
Pre-qualify Days
Reach out to a lender who specializes in 504 and confirm the business and the project are eligible before anyone spends money. A good lender will tell you quickly if you do not qualify.
-
Term sheet 1 week
If you pre-qualify, you get a term sheet with the structure, the rate, and the conditions. Most lenders collect a deposit at this point to cover the appraisal and environmental reports.
-
Documentation and underwriting 2 to 4 weeks
Your lender gathers what underwriting needs and starts coordinating with a CDC on the SBA side. Expect to produce:
- Two to three years of business and personal tax returns
- Interim financial statements and a personal financial statement
- The purchase agreement or the construction plans and budget
- Appraisal and environmental reports, ordered by the lender
-
Submission and SBA approval 1 to 2 weeks
The CDC submits the package to the SBA. Turnaround varies with SBA volume. Approval comes back as an authorization, which is your commitment in writing.
-
Closing and funding 2 to 3 weeks
Closing attorneys are engaged, title work is completed, and loan documents are prepared. The first mortgage funds at closing. The SBA second follows at the next monthly debenture sale, which is why its rate is set then rather than at your term sheet.
Want this stage by stage in more depth? Read the full SBA 504 process guide.
How the 504 compares to the alternatives
| SBA 504 | SBA 7(a) | Conventional | |
|---|---|---|---|
| Typical down payment | 10% | 10% to 15% | 25% to 30% |
| Structure | Two loans | One loan | One loan |
| Rate | Fixed on the SBA portion | Usually variable, tied to prime | Fixed for 5 to 10 years, then resets |
| Term | Up to 25 years | Up to 25 years for real estate | Often a 20 year amortization with a balloon |
| Best for | Real estate, construction, heavy equipment | Working capital, acquisitions, mixed uses | Strong balance sheets with cash to put down |
Go deeper: SBA 7(a) vs 504 and SBA loan vs conventional loan.
Next stops on the 504
Numbers first, bankers later
Answer a few questions about your project and get a personalized report by email in about 10 minutes.
- Your estimated blended rate and monthly payment
- Your likelihood of funding, scored 1 to 5
- Estimated closing costs for your project
- The lenders most active in your state
No application. No credit pull. No sales call.
SBA 504 structure questions, answered
How does an SBA 504 loan actually work?
A 504 splits one project across three sources: a private lender funds about 50% in first lien position, an SBA backed second funds about 40% at a long term fixed rate, and you put in about 10%. Both loans close on the same project at the same time and you make two monthly payments.
Why is it structured as two loans instead of one?
Because the bank sits in first position on only half the project, its risk is low and its pricing is better. The SBA takes the riskier second position at a fixed rate it can offer because it funds through a monthly bond sale. Splitting the loan is what makes 10% down possible.
Do I make two payments every month?
Yes. One payment goes to the private lender on the first mortgage, and one goes to the CDC servicing the SBA second. The two together are what you should compare against a conventional loan payment.
What is a CDC and do I have to find one myself?
A Certified Development Company is the SBA licensed nonprofit that underwrites, submits, and then services the SBA portion. You should not have to go find one. A lender who specializes in 504 already works with CDCs across the country and coordinates that side for you.
Do I ever deal with the SBA directly?
Almost never. You work with your lender and the CDC. They package the loan and submit it to the SBA for approval on your behalf.
How long does a 504 take from start to funding?
Typically 60 to 120 days. The two loans move on parallel tracks and close together, so the timeline is driven mostly by how fast your documentation comes in and how quickly the appraisal lands.
See the two loan structure on your own project
Your estimated blended rate, both monthly payments, and your approval odds by email in about 10 minutes.
Free and confidential. No application, no credit pull, no sales call.