What Is an SBA 504 Loan?

The SBA 504 is one of the most useful and least understood loan programs in the country. It exists for a single purpose: to help established businesses own the building or heavy equipment they operate from, with a small down payment and a rate they can count on for decades. If you are tired of paying rent and want to build equity in your own property, this is usually the program to look at first.

The 50/40/10 Structure

Every 504 deal is built the same way. Understanding the three pieces is understanding the whole loan:

• ~50% — Bank first mortgage. A conventional lender funds the largest share and holds first position. This is a normal commercial mortgage at a market rate.
• ~40% — CDC/SBA debenture. A Certified Development Company — a nonprofit licensed by the SBA — lends this portion, backed by an SBA guarantee, at a fixed rate for the full term. This is the piece that makes a 504 special.
• ~10% — Your down payment. Far less than the 20–30% a conventional commercial mortgage typically demands. Startups and special-purpose properties put down 15–20%.

Splitting the loan this way lets the bank lend safely (it is only in for half, in first position) while the SBA-backed piece carries the long fixed term. You get the best of both.

What You Can Buy With a 504

• Purchasing an existing building your business will occupy (you must use at least 51% of it)
• Ground-up construction of a building you will occupy (at least 60% at first, growing to 80% over time)
• Buying land and making improvements
• Renovating or expanding a property you already own
• Purchasing long-life heavy equipment and machinery (financed on the 10-year debenture)

What it cannot do is fund working capital, inventory, or general debt refinancing that is not tied to the project. If you need those, look at the 7(a) program or a working capital loan instead.

Rates and Terms

The debenture portion carries a fixed rate tied to the 10-year Treasury — generally in the ~6–7% range in 2026 — while the bank's half is priced at a market rate. Terms run 25 years for real estate, 20 years for some projects, and 10 years for equipment. The SBA/CDC portion goes up to $5 million, or $5.5 million for manufacturers and energy-efficient projects, which pushes total project sizes well past $12 million. For the full breakdown of where rates sit and how they are set, see our SBA 504 loan rates guide, and estimate a payment with the SBA loan calculator.

Who Qualifies

The bar is reasonable for an established small business:

• A for-profit business operating in the U.S.
• You will occupy the property (owner-occupied, not pure investment real estate)
• Under SBA size limits — generally a tangible net worth below $20 million and average net income under $6.5 million over the prior two years
• Reasonable credit and the cash flow to service the debt
• The project should create or retain jobs or meet a public-policy goal (this is usually easy to satisfy)

504 vs 7(a): Which One?

Both are SBA loans, but they solve different problems. Choose the 504 when the money is going into real estate or heavy equipment and you want a low down payment with a long fixed rate. Choose the 7(a) when you need flexibility — working capital, inventory, buying a business, or a mix of uses in one loan. Many owners eventually use both. The full side-by-side is in our 7(a) vs 504 guide.

Pros and Cons

504 for Equipment vs Real Estate

Most people associate the 504 with buying a building, but it also finances long-life heavy equipment and machinery — and the terms differ by use. Real estate is financed on the longest terms, up to 25 years on the debenture, because a building's useful life is long. Equipment is financed on a shorter 10-year debenture, matched to the shorter life of machinery. You can even combine them in one project — building a facility and outfitting it with major equipment — with each portion sized to the right term. The rule of thumb: if the asset is long-lived and you will occupy or use it in your business, the 504 can likely fund it; if you need money for working capital, inventory, or a short-lived asset, it cannot, and a 7(a) or working capital option fits better.

How Long a 504 Takes — and What Slows It Down

A 504 is not fast. Between coordinating a bank and a CDC, SBA authorization, and the monthly debenture funding cycle, expect the process to run 60–90 days or more from application to funding on a typical deal. The usual culprits behind delays are familiar: incomplete financials, a slow appraisal or environmental report, unclear use of proceeds, or a property that raises occupancy questions. You can shorten the timeline by having your documents ready up front, choosing an experienced 504 lender and CDC, and responding quickly to underwriting requests. If your project needs to close in weeks rather than months, the 504 may not be the right tool — and that trade-off between cost and speed is worth weighing before you start.

That said, for the right project the wait pays off: a fixed, long-term rate on a large real-estate purchase, secured with only 10% down, is hard to match anywhere else — which is why owners who can plan ahead often start the 504 process early rather than reaching for a faster, costlier option under time pressure.

Is a 504 Your Best Route?

The 504 is excellent for owner-occupied real estate and heavy equipment — but it is one of several ways to fund a project, and not always the cheapest or fastest for your situation. Before you commit to the two-lender, two-closing 504 process, it is worth seeing how it stacks up against a 7(a), a conventional loan, and other options for your specific project.

Tell us what you are financing once and compare a 504 against the alternatives that actually fit — matched to lenders and programs suited to your down payment, timeline, and property.

How to Apply

1. Confirm the use fits — owner-occupied real estate or heavy equipment.
2. Gather financials — business and personal tax returns, financial statements, and a description of the project.
3. Get matched with a bank and a CDC — the two lenders work together on a 504; you do not have to find each yourself.
4. Underwriting and approval — the bank and CDC underwrite their portions; the SBA authorizes the debenture.
5. Close and fund — the bank funds at closing; the debenture funds in the next monthly pool, which sets your fixed rate.

Frequently Asked Questions