SBA 504 loans: requirements and how they compare with 7(a)

Published October 25, 2026 · Rules checked against SBA and IRS sources as of October 2026

The 504 program is SBA's fixed-asset lender. It's an economic development program: the trade-off for its long terms is a job or public-policy goal and a three-party structure. For a buyer, it's mostly relevant when the building comes with the business.

How a 504 project is financed

The borrower's contribution can be cash, land that's part of the project, or borrowed funds that are subordinate to both the bank loan and the debenture. Hotels, service centers with pits and lifts, and other limited or special purpose properties require 15%.

What 504 can and can't pay for

504 in a business purchase

There are two ways 504 shows up in an acquisition:

1. Paired with 7(a). The 7(a) loan funds the business (goodwill, equipment, working capital) and a 504 loan funds the building. Appendix 15 lists 504 as an option for the real estate when the deal is split into separate loans. Equity on the real estate then follows 504 rules. SBA requires the 7(a) loan to be approved first.
2. 504 change-of-ownership project. Allowed when the project finances only eligible long-term fixed assets, documents jobs created or retained (the application must give a reasonable basis to conclude jobs would be lost without the change), results in the buyer owning 100%, and the seller leaves the business. Goodwill and receivables must be financed by other means.

A stock purchase can use 504 proceeds only to the extent it's really buying the real estate or long-term fixed assets; excess value has to be small and financed separately.

Occupancy rules

The business has to use the property. SOP 50 10 8.1 requires the applicant (or operating company) to occupy at least 51% of the rentable property of an existing building, with up to 49% leased; for new construction, at least 60%, with up to 20% leased permanently and another 20% temporarily. Buying a building mainly to collect rent isn't eligible. See SBA loans and investment property.

Is 504 worth the extra party?

The CDC adds paperwork and a separate closing for the debenture. In exchange, the real estate gets a long term and the bank's exposure is cut to about half the project. When the building is a large share of the price, that's often worth it. When it's small, a single blended 7(a) loan is simpler. Compare in 7(a) vs 504 and check eligibility in 504 requirements.

504 requirements

To qualify for a 504 loan you need an eligible for-profit small business that will occupy the property (at least 51% of an existing building, 60% of new construction), a project limited to long-term fixed assets, a borrower contribution of at least 10% (15% for new businesses or special purpose property, 20% for both), and a project that meets a job creation or retention goal or another public policy goal. In an acquisition, goodwill must be financed separately.

If you're buying a business along with the building it runs from, a 504 loan can finance the property. Here are the requirements as of SOP 50 10 8.1, with notes on how they interact with an acquisition.

The checklist

• Eligible small business. For-profit, within SBA size standards (buyer and acquired business measured together), not an ineligible type. All owners and required guarantors U.S. citizens or nationals.
• Owner occupancy. Existing building: occupy at least 51% of the rentable property. New construction: at least 60%.
• Fixed assets only. Real estate, construction, long-life machinery and equipment. Not goodwill, working capital, inventory or receivables.
• Borrower contribution. 10% minimum; 15% for a new business or a limited or special purpose property; 20% for both.
• Economic development goal. One job opportunity created or retained per $95,000 of SBA-guaranteed debenture (different figures for small manufacturers and certain areas), or a community development or public policy goal.
• Ability to repay from cash flow, with the CDC's underwriting.
• Personal guaranties from 20%+ owners.

Extra rules when ownership changes

For retained jobs, the application must show a reasonable basis to conclude they'd be lost without the change of ownership, for example a seller statement with supporting facts. If you're using 504 only for the building alongside a 7(a) loan for the business, the 7(a) loan follows Appendix 15 and the 504 loan follows the 504 rules for its share, including the equity split.

A worked example

Illustration, not a real deal

Say you're buying an auto service center with its building. The building appraises at $1,200,000. Service centers with pits and in-ground lifts are on SBA's list of limited or special purpose properties, so the 504 piece needs at least 15% from you: $180,000. The debenture can finance no more than 35% ($420,000), and a bank at least 50% ($600,000). The business itself (goodwill and equipment) goes on a 7(a) loan with its own 10% equity.

Common snags

• A building that's mostly leased to other tenants fails occupancy.
• Trying to include goodwill in the 504 project.
• Forgetting the extra equity on special purpose properties.
• Not documenting the jobs case for a change of ownership.

7(a) vs 504 for an acquisition

For buying an operating business, 7(a) is the main tool: it can finance goodwill, working capital and equipment over 10 years. A 504 loan finances only long-term fixed assets like real estate and major equipment, so it can't pay for goodwill. When a purchase includes the building, buyers often use 7(a) for the business and 504 for the real estate, which gives the property a longer fixed-rate term.

The 7(a) and 504 programs are often listed side by side as if they were alternatives. For an acquisition, they're closer to complements: one is built for the business, the other for the building.

The core difference

How the combination works on an acquisition

Appendix 15 lets a change of ownership that includes real estate be structured as separate loans, one for the business and one for the real estate, and expressly includes the 504 program as an option for the real estate. Equity is allocated pro rata between the two, but if 504 finances the real estate, that piece follows the 504 equity rules. A blended (weighted-average) 7(a) loan is the alternative; 504 can't be blended. SBA also requires that when an applicant applies for both, the 7(a) loan is processed and approved first.

Using 504 for a change of ownership on its own

The 504 program has its own change-of-ownership rule. A 504 project resulting in a change of ownership is eligible only if it finances eligible long-term fixed assets (not goodwill or receivables, which must be financed separately, possibly with 7(a)), documents jobs created or retained, results in the buyer owning 100% of the business, and the seller doesn't remain as an officer, director, stockholder or key employee. Buying stock with 504 proceeds is allowed only to acquire the real estate or long-term fixed assets, and any excess value over those assets must be small and financed separately.

In practice, a 504-only acquisition fits businesses whose value is mostly real estate and equipment. For most service businesses, 7(a) does the heavy lifting.

Which to use

• No real estate in the deal: 7(a).
• Real estate is a modest part of the price: one blended 7(a) loan is often simplest.
• Real estate is a large part of the price: 7(a) for the business plus 504 for the building, for a long fixed-rate term on the property.
• Mostly real estate and equipment, little goodwill: a 504 change-of-ownership project may work, with any goodwill financed separately.

More on each: 504 loans, 504 requirements and buying the business and the building.

Common questions

Related guides

• SBA loans to buy real estate with a business: terms and limits
• Commercial property appraisal in an SBA business acquisition
• SBA 7(a) loan requirements: eligibility, citizenship and the core rules
• The SBA 7(a) loan, explained for people buying a business
• SBA business acquisition loan terms and loan limits

This guide explains rules and practice in plain English. It isn't legal, tax or credit advice, and SBA and IRS rules change. Check the current SOP, regulations and your lender's requirements before you rely on anything here. Examples with made-up businesses are illustrations, not real deals.