The SBA 504 program is purpose-built for fixed assets — owner-occupied commercial real estate and large equipment. It's structured very differently from 7(a). A 504 deal is actually two loans wired together: a conventional first mortgage from a bank, and a second mortgage funded by a Certified Development Company (CDC) and backed by an SBA-guaranteed debenture. The combination usually lets owners put less cash down and lock long-term fixed rates.
The 50/40/10 structure
A typical 504 deal looks like this: the bank funds 50% of the project as a conventional first mortgage, the CDC funds 40% via the SBA-backed second mortgage, and the borrower contributes 10% in equity. The split shifts to 15% borrower equity for new businesses (under 2 years old) or special-purpose properties (e.g., a hotel, restaurant, or car wash), and to 20% if both apply.
The CDC second mortgage is fixed-rate and typically amortized over 10, 20, or 25 years. That long, fixed-rate piece is the main reason owners pursue 504 instead of a conventional mortgage.
What 504 can and can't finance
Eligible uses are limited to long-term fixed assets: purchase of land, purchase of existing buildings, ground-up construction, building improvements, and the purchase of long-life machinery and equipment. Project costs (legal, appraisal, environmental) and limited refinancing of qualifying debt can also be rolled in.
Working capital, inventory, and goodwill are not eligible under 504. Owners who need a mix of real estate and working capital often pair a 504 (for the building) with a 7(a) (for working capital).
Owner-occupancy requirement
504 is for owner-occupied real estate. For an existing building, the borrower's business must occupy at least 51% of the rentable square footage. For new construction, the requirement is 60% at occupancy and 80% within 10 years. Pure investment property doesn't qualify — that's a conventional commercial mortgage market.
Job-creation / public-policy goal
504 carries a job-creation benchmark — historically about one job created or retained per increment of debenture funding (the increment is set by SBA and updated periodically). Borrowers who don't meet the job-creation target can still qualify by meeting one of several public-policy goals (rural development, energy efficiency, expansion of women- or veteran-owned businesses, etc.).
When 504 typically beats 7(a) or a conventional mortgage
504 tends to win when the project is dominated by real estate or large equipment, the borrower wants a long-term fixed rate on the SBA portion, and 10% down is meaningfully better than the 20–30% a conventional bank would require.
It tends to lose when speed is critical (504 closings involve more parties — bank, CDC, SBA — and can take longer than 7(a)), when the borrower needs significant working capital alongside the real estate, or when the project is too small for the structure to make economic sense.
Sources
Editorial note: This article is general information about how small-business lending products work. It is not financial, legal, or tax advice for any specific borrower. Loan terms, eligibility, and rates vary by lender, borrower profile, and current market conditions, and the specific facts of your business will determine which products and structures actually fit. Consult a CPA, attorney, or SBA-approved lender before making decisions that affect your business.