How does an SBA 504 loan work for owner-occupied commercial real estate?

SBA 504 is a three-party structure: you put in 10%, a conventional bank lends 50%, and a Certified Development Company (CDC) issues a 40% SBA debenture at a fixed rate. The result is long-term, fixed-rate financing for owner-occupied commercial real estate or heavy equipment — with only 10% down.

The 504 three-party structure

An SBA 504 loan involves three parties simultaneously: the borrower (10% down payment), a conventional bank or credit union (50% first mortgage), and a Certified Development Company (CDC) that issues a 40% SBA debenture. The CDC portion is funded by selling bonds backed by the SBA guarantee — which keeps the CDC rate fixed at a Treasury-bond spread regardless of Prime Rate movements. The bank's 50% is negotiated separately and may be fixed or variable depending on the lender.

Key parameters

Borrower down payment: 10% (startups and single-purpose properties may require 15–20%)
Bank first mortgage: 50% of project cost
SBA debenture (CDC): 40% of project cost — fixed rate, set at time of debenture funding
Maximum SBA debenture: $5,500,000 for most businesses; up to $5,500,000 for manufacturers and energy-efficient projects
Real estate term: 20 or 25 years on the SBA debenture portion
Equipment term: 10 years on the SBA debenture portion
Owner-occupancy requirement: borrower must occupy 51%+ of the property (60%+ for new construction)

Fixed rate vs. 7(a) variable rate

The SBA 504 debenture rate is fixed at debenture funding — tied to the 10-year or 20-year Treasury rate plus a CDC spread plus ongoing fees. This predictability is a core advantage over SBA 7(a) for commercial real estate, where rates are typically variable (Prime + spread) and expose borrowers to rate risk over a 25-year term.

Eligible uses

Purchase of owner-occupied commercial real estate
Ground-up construction of an owner-occupied facility
Substantial renovation or modernization of existing commercial real estate
Purchase of heavy machinery and equipment with a useful life of 10+ years
Refinancing of existing commercial real estate debt (under certain conditions)

Apply at ClearValue Lending

ClearValue Lending routes eligible small businesses to SBA lenders and CDC-affiliated lenders in its network. If you're buying owner-occupied commercial real estate or heavy equipment, start an application to assess whether a 504 or 7(a) structure is the better fit for your project.

Sources

SBA 504 loans use a three-party structure: borrower (10%), conventional lender (50%), and CDC SBA debenture (40%). The debenture carries a fixed rate tied to Treasury bonds. — SBA — 504 Loans
The maximum SBA 504 debenture for most eligible businesses is $5,500,000; manufacturing businesses and projects meeting energy-efficiency standards may qualify for larger debentures. — SBA — 504 Loans
The real estate debenture term under SBA 504 is 20 or 25 years; equipment debentures are 10 years. The borrower must occupy at least 51% of the property for existing buildings, or 60% for new construction. — SBA — 504 Loans
SBA 504 loans financed $8.8 billion in projects in fiscal year 2023, supporting commercial real estate and equipment acquisition for small manufacturers, service firms, and other eligible businesses. — SBA — 504 Loans

Key takeaways

504 is a three-way split: 10% borrower / 50% bank / 40% SBA debenture — the SBA portion is fixed-rate.
Designed for owner-occupied commercial real estate (51%+ occupancy) and heavy equipment with 10+ year useful life.
20–25 year terms on real estate, 10-year terms on equipment — the longest available under SBA programs.
The fixed debenture rate is a major advantage over SBA 7(a) for real estate, where rates are typically Prime + spread variable.
Maximum SBA debenture is $5.5M for most businesses; total project size can be substantially larger.