SBA 504 Loan Structure Explained

The 50/40/10 Framework

Every SBA 504 project is funded by three pieces:

• 50% — Bank first lien: A conventional bank or credit union lends half the project cost and holds the first mortgage on the property.
• 40% — CDC/SBA debenture: An SBA-certified CDC (Certified Development Company) issues a debenture backed by the SBA. This is the "SBA loan" portion. It carries a fixed rate and holds the second lien.
• 10% — Borrower equity: You bring 10% as a down payment. In some cases it's 15–20% (see below).

The total = 100% of the project cost, typically including land, building, construction, and eligible soft costs.

Who Are These Three Parties?

The Bank (First Lien Lender)

The bank participates as an ordinary commercial lender. It sets its own rate, terms, and underwriting standards for its 50% piece. It holds the first lien — meaning in a default scenario, the bank gets paid first from any liquidation proceeds. Because of this first-lien position, participating banks are taking relatively lower risk, which is one reason the program works.

You can use your existing bank, or the CDC can help you find a participating lender. Not all banks do 504 deals — some prefer 7(a) or conventional lending — so having a CDC with strong lender relationships is valuable.

The CDC (Second Lien Lender)

The CDC is a non-profit or mission-driven organization certified by the SBA to administer 504 loans. There are approximately 200 CDCs across the country, each with a defined service area. The CDC:

• Originates and processes the SBA debenture
• Underwrites the project alongside the SBA
• Services the debenture for the life of the loan
• Holds the second lien on the property

The CDC's 40% piece is funded through a bond sale — CDCs pool debentures and sell them monthly as government-backed bonds. This is what gives borrowers a fixed, below-market rate on the SBA portion.

The Borrower

You bring 10% equity. This is significantly less than the 20–30% typically required on conventional commercial mortgages, which is a major advantage of the program. Your equity can come from cash, a seller credit (in some circumstances), or equity in a related asset.

How the Two Loans Work Together

You'll close two separate loans on the same day (or close sequentially):

1. Bank loan closes first — you receive the bank's 50% funds and acquire the property or begin construction.
2. CDC debenture closes second — the SBA debenture funds typically 30–60 days after the bank closing. The CDC pays off the bank's interim advance and establishes the permanent second lien structure.

During the gap between bank closing and debenture funding, the bank typically holds a "bridge" or "interim" position on the full project cost. Once the debenture funds, the bank is reduced to its permanent 50% first-lien position.

What Happens at Closing

A 504 closing involves more moving parts than a typical commercial loan:

• Title, survey, and environmental clearance for the property
• SBA authorization (the formal approval document)
• Bank loan documents + bank mortgage
• CDC debenture documents + CDC/SBA mortgage
• Lien subordination agreements between bank and CDC
• Personal guarantees from all 20%+ owners

An experienced CDC will guide you through this entire checklist. The complexity is manageable — hundreds of 504 deals close every month across the country.

What If the Down Payment Is Higher Than 10%?

Two scenarios require higher equity:

• 15% down: Special-purpose properties (gas stations, hotels, car washes, funeral homes, etc.) where collateral liquidation value is less predictable.
• 20% down: Startup businesses (under 2 years old) or special-purpose properties owned by startups. The extra equity protects the program in higher-risk scenarios.

Frequently Asked Questions

Can I use one bank for both the first-lien and CDC portions?

No. The bank provides the first-lien conventional loan; the CDC (not the bank) provides the SBA debenture. They are legally separate instruments. However, your bank and CDC coordinate closely throughout the process.

Who do I make payments to?

You make two separate monthly payments — one to the bank for the first-lien loan, and one to the CDC's central servicing agent for the SBA debenture. The CDC servicing agent (typically a national servicing company like CSC or Premier CDC) handles the debenture payment.

What happens if I want to sell the property?

You can sell the property, but both loans must be paid off or assumed (subject to SBA approval). The debenture carries a prepayment penalty during the first half of the loan term, so factor that into any sale analysis.

Can I refinance out of a 504 later?

Yes, after the prepayment penalty period ends (or if you're willing to pay it). Some borrowers also refinance into a new 504 if they're undertaking a significant expansion project that qualifies.