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By the Loanable Editorial Team · Marketplace editorial · Updated October 2026
An SBA 504 loan is long-term, fixed-rate financing for major fixed assets—most often owner-occupied commercial real estate and long-life equipment. Instead of one lender carrying the whole project, a 504 deal usually combines a senior lender (often a bank), a Certified Development Company backed by the U.S. Small Business Administration, and a down payment from the business owner.
If you are trying to buy the building you operate from, build a new facility, or install heavy machinery that will last a decade or more, 504 is often one of the first programs worth understanding. This guide explains how the structure works, who it fits, what it typically costs (in categories, not invented quotes), how it compares with SBA 7(a) and conventional commercial mortgages, and how a marketplace like Loanable helps you compare paths. For the broader program overview, start at our SBA loans hub; for property-specific options, see commercial real estate financing.
What an SBA 504 loan is
The 504 program exists to help small businesses acquire major fixed assets that support growth and job creation. According to the SBA's 504 loan program page, 504 loans are originated by Certified Development Companies (CDCs)—community-based nonprofit partners certified and regulated by the SBA—in collaboration with a senior lender.
A few defining traits:
- Project-based, not general-purpose. 504 finances specific assets: land, buildings, construction, renovation, and long-life machinery. It is not a revolving line or a cash-flow product.
- Long-term and fixed-rate on the SBA portion. SBA lists 10-, 20-, and 25-year maturities, with the CDC portion's rate pegged to an increment above 10-year U.S. Treasury yields.
- Owner-occupied focus. The program is built for operating businesses that will use the property themselves, not investors buying rental real estate.
- Program limits apply. SBA's page describes financing of up to $5 million, with a stated maximum 504 loan amount of $5.5 million for certain projects. Those limits apply to the SBA/CDC portion; total project size can be larger once the senior lender's portion and equity are included. Always confirm current limits on SBA.gov or with a CDC.
Loanable is not an SBA lender and does not issue 504 debentures. We help businesses get matched with financing partners whose programs fit the project.
Who an SBA 504 loan is for
504 tends to fit established, profitable operating businesses that want to stop leasing and own their space, or that need to make a large fixed-asset investment. Common profiles include:
- A manufacturer buying a larger plant or adding a production line with long-life equipment
- A medical or dental practice purchasing its office condo or building
- A restaurant group, distributor, or contractor buying a building with yard or warehouse space
- A family business expanding into a ground-up facility it will occupy
To be eligible, the SBA says a business must be an operating, for-profit company located in the U.S., be small under SBA size standards, and not be an ineligible business type. SBA also looks for qualified management, a feasible plan, good character, and the ability to repay. The 504 program has an alternative size test based on tangible net worth and average net income—a CDC can tell you which test applies to you.
Owner occupancy matters. SBA rules set minimum occupancy thresholds—commonly cited as at least 51% of an existing building and a higher share for new construction. If most of a property will be leased to unrelated tenants, 504 is usually the wrong program. Many projects also need to meet job-creation or public-policy goals, which your CDC will document.
What SBA 504 typically funds (and what it doesn't)
Per SBA, eligible uses include:
- Purchasing, constructing, or renovating buildings or land
- Long-term machinery and equipment with a remaining useful life of at least 10 years
- Certain refinancing or consolidation of "qualified debt" under SBA rules
A 504 loan cannot be used for working capital or inventory, speculation, or investment in rental real estate. That makes 504 excellent for "own the four walls" and "install the big machine" projects—and a poor fit for payroll gaps, seasonal inventory, or marketing pushes. If your project is equipment-only and the asset has a shorter life, compare equipment financing as well.
How the SBA 504 structure works
Most 504 projects use a three-part capital stack:
- Senior lender portion (first lien). A bank or other third-party lender finances a large share of the project and takes the first lien on the asset. This portion has its own rate and terms set by that lender.
- CDC/SBA portion (second lien). The CDC finances another share through an SBA-guaranteed debenture, typically at a long-term fixed rate tied to Treasury yields.
- Borrower equity. The business contributes a down payment.
A commonly cited illustration is roughly 50% senior lender / 40% CDC / 10% borrower. Treat that as a starting picture, not a rule: startups, special-purpose properties (for example, hotels, car washes, or medical facilities with unique buildouts), and some credit profiles often require more equity, and the senior lender's appetite affects the split. Ask your lender and CDC for a sample sources-and-uses table for your project rather than assuming a fixed formula.
A practical consequence of the structure: you are working with two lenders, two notes, and two sets of closing requirements. Interim financing is common on construction or purchase deals—the senior lender may fund the CDC share temporarily until the SBA debenture is sold and the permanent CDC loan funds.
Costs and repayment: what to model
We don't publish rates or APRs because pricing depends on the lender, the CDC, Treasury markets at the time of funding, and your credit profile. Instead, model these cost categories:
- Senior lender interest and fees. Set by the bank or third-party lender; may be fixed or variable, with its own term and amortization.
- CDC/debenture rate. Fixed for the life of the debenture and tied to 10-year Treasury yields plus an increment.
- SBA and CDC fees. SBA notes fees total approximately 3% of the debenture and may be financed into the loan.
- Third-party and closing costs. Appraisal, environmental review, title, survey, legal, and construction-related costs.
- Prepayment terms. The CDC portion commonly carries a declining prepayment penalty in early years; the senior note may have its own.
Repayment is typically monthly. SBA notes that active 504 borrowers pay through a Central Servicing Agent, usually by monthly ACH. Work with your CPA to compare total cost of capital against leasing or a conventional mortgage over the period you actually expect to hold the property.
Timeline, documents, and what to expect
504 is not a fast product. Appraisals, environmental reports, CDC packaging, SBA authorization, and coordinating two lenders all take time—and construction projects add draw schedules. Expect weeks to months, depending on project complexity and how quickly you can provide documents. If a seller or landlord deadline is tight, discuss interim or bridge loan options early.
Documents commonly requested include:
- Business and personal tax returns (often three years)
- Year-to-date financial statements and a current debt schedule
- Personal financial statements for owners
- Purchase contract, construction budget, or equipment quotes
- Entity documents and ownership details
- Property information: appraisal, environmental reports, and title (often ordered by the lender)
- Projections and a short narrative of how the project supports growth or jobs
SBA 504 vs SBA 7(a)
Both are SBA programs, but they solve different problems:
SBA 504
- Primary use: Owner-occupied real estate and long-life fixed assets
- Structure: Senior lender + CDC + borrower equity
- Rate on the SBA portion: Long-term fixed, tied to Treasury yields
- Working capital: Not allowed
- Best when: The project is mostly property or major equipment
SBA 7(a)
- Primary use: Flexible—working capital, equipment, acquisitions, refinancing, and real estate
- Structure: A single lender with a partial SBA guarantee
- Rate: Fixed or variable, negotiated within SBA maximums
- Working capital: Allowed
- Best when: You need flexibility or a blended use of proceeds
If your use of funds mixes a building purchase with working capital, 7(a) may be simpler. If the project is predominantly real estate or heavy equipment and you value long-term fixed pricing, 504 often wins. See the SBA 7(a) program page and our SBA loans overview to compare.
SBA 504 vs a conventional commercial mortgage
A conventional commercial real estate loan from a bank or private lender is often faster and involves one lender. Trade-offs to weigh:
- Down payment: Conventional loans frequently require more equity than a typical 504 structure.
- Rate structure: Conventional loans may reset or balloon in 5–10 years; 504's CDC portion is long-term fixed.
- Speed and paperwork: Conventional can close faster with fewer program requirements.
- Use restrictions: Conventional loans can finance investment property; 504 cannot.
For many owner-operators, the decision comes down to how much cash you want to preserve versus how quickly you need to close. Our commercial real estate hub covers non-SBA options, and term loans can fit shorter-horizon projects.
When SBA 504 is the wrong tool
504 is built for long-term assets. It is usually not the answer if you need:
- Fast operating cash for payroll, inventory, or a seasonal gap → working capital
- Revolving access you can draw and repay → line of credit
- Cash tied up in unpaid B2B invoices → accounts receivable financing
- Very fast, sales-based funding when timing matters more than cost → a merchant cash advance can fund quickly but usually costs far more than SBA financing; compare carefully
Many businesses use more than one product: a 504 for the building and a line of credit for operations.
How Loanable helps you compare options
Loanable is a commercial lending marketplace. You complete one application, and we match you with financing partners whose programs fit your profile and project—SBA-oriented lenders, commercial real estate lenders, and adjacent term or bridge providers. That helps you:
- See whether a 504, 7(a), or conventional path fits before you invest weeks with one institution
- Compare structures, equity requirements, and timelines side by side
- Avoid forcing a building purchase into a short-term product that was never designed for it
Partners and CDCs make all credit decisions. Learn more on how it works, or apply to start.
FAQ
What is an SBA 504 loan?
An SBA 504 loan is long-term, fixed-rate financing for major fixed assets such as owner-occupied commercial real estate and long-life equipment. It is delivered through Certified Development Companies working alongside a senior lender, with the business contributing a down payment.
How does an SBA 504 loan work for real estate?
A senior lender typically finances a first-lien portion, a CDC finances a second-lien portion through an SBA-guaranteed debenture, and the borrower contributes equity. A commonly cited illustration is 50/40/10, but actual splits depend on the project and lender.
What are SBA 504 loan requirements?
The business must be an operating, for-profit U.S. company that is small under SBA size standards and not an ineligible type. Owner-occupancy rules apply, and lenders and CDCs review management experience, the project plan, credit, and ability to repay.
SBA 504 vs 7(a): which should I use?
504 generally fits projects that are mostly owner-occupied real estate or long-life equipment and benefit from long-term fixed pricing. 7(a) is more flexible and allows working capital and mixed uses of proceeds.
Can I use an SBA 504 loan for working capital or rental property?
No. SBA states 504 loans cannot be used for working capital, inventory, speculation, or investment in rental real estate.
How long does an SBA 504 loan take?
Timelines vary with project complexity, appraisals, environmental reviews, CDC packaging, and SBA authorization. Plan for weeks to months rather than days.
Is Loanable an SBA lender?
No. Loanable is a marketplace that matches businesses with financing partners. Lenders and CDCs underwrite and fund loans.
Next step
Ready to see whether a 504, 7(a), or conventional commercial mortgage fits your project? Apply with Loanable to get matched with partners, or explore SBA loans and commercial real estate financing first.