The SBA 504 Loan: How Your Buyer Is Financing the Building, and What That Means for Your Sale

An SBA 504 loan funds an owner-occupant’s purchase of commercial real estate in three parts: the borrower contributes at least 10% of project costs, a CDC debenture covers up to 40%, and a third-party lender funds the balance behind a first lien. The maximum 504 loan is $5.5 million, and the borrower must occupy at least 51% of an existing building. Skip The Agent works direct with owners, including on buildings where a financed sale has already stalled once, and we will tell you plainly whether your property fits the 504 buyer pool or needs a different buyer.

This is not lending or legal advice. SBA rules change, they are administered through individual CDCs and lenders who apply their own credit overlays on top, and the only figures that matter to your deal are the ones your buyer’s lender puts in writing. Confirm anything here with a CDC or an SBA lender before you rely on it.

Two people should read this. If you are a business owner buying the building you operate from, the 504 is probably the cheapest money available to you and the first half explains how it works. If you are selling a small commercial property, the 504 buyer is a large share of your realistic buyer pool, and how this loan behaves decides whether your sale closes, when, and at what price. The second half is written for you.

The Three-Part Structure, and Why It Exists

A 504 is not one loan. Per 13 CFR 120.801, permanent financing for a 504 project comes from three sources: a contribution by the small business of at least 10 percent of project costs, a loan funded by a CDC debenture for up to 40 percent, and a third-party loan making up the balance, which takes a first lien on the property.

In the common case that reads as 50% bank, 40% debenture, 10% borrower. The bank is in first position on half the deal, which is a conservative loan-to-value by any standard, and that is the reason banks like this structure on properties they would not finance conventionally at 90%.

The CDC is the piece most people have not met. The SBA describes Certified Development Companies as its “community-based nonprofit partners who promote economic development within their communities,” authorized to originate the 504 portion alongside a senior lender. Your buyer is therefore working two approvals at once, and neither one alone can close the deal.

What the Borrower Actually Puts In

The 10 percent floor is the number every buyer remembers, and it is often not their number. 13 CFR 120.910 sets the contribution at:

At least 10 percent in ordinary circumstances
At least 15 percent if the project involves a limited or single purpose building
At least 15 percent if the borrower has operated for two years or less
At least 20 percent when both of those apply

That escalation is worth understanding before you assume your building qualifies a buyer at 10 percent down. A limited or single purpose property is one built for a use that would be expensive to convert: a car wash, a bowling alley, a hotel, a gas station, a funeral home. If your building is one of those and your buyer is a startup, their cash requirement doubles, and a buyer who came to you expecting to put 10 percent down discovers they need 20.

The Occupancy Rule Decides Who Can Buy Your Building

This is the single most important 504 fact for a seller, and it is the one that quietly removes buyers from your pool.

A 504 borrower has to occupy the property. Under 13 CFR 120.131, the borrower must “permanently occupy and use no less than 51 percent of the Rentable Property” in an existing building, and may lease out up to 49 percent. For new construction the bar rises: occupy at least 60 percent, lease no more than 20 percent.

Three consequences follow, and they are all yours to manage.

An investor cannot use a 504 to buy your building. Not a syndicator, not a 1031 buyer looking for a passive net-leased asset, not anyone whose plan is to collect rent. If your marketing is aimed at investors, you are aimed away from the 504 pool entirely.

A fully tenanted building does not fit. If your property is 100% leased to third parties, no 504 buyer can occupy 51% of it without displacing tenants whose leases you sold them. A building with a vacant suite the buyer can move into is a 504 property. The same building fully leased is not.

Your buyer pool for a small commercial property is narrower than the listing traffic suggests. The people who can actually pay retail for a 5,000 square foot flex building are usually operating businesses that want to stop paying rent. That is who the 504 was built for, and it is who you are selling to.

Terms, Rates and Fees

The SBA states the maximum 504 loan amount is $5.5 million, with 10, 20 and 25 year maturities available. The rate on the debenture portion is “pegged to an increment above the current market rate for 10-year U.S. Treasury issues,” and fees total “approximately 3% of the debt” and may be financed into the loan.

Eligible uses cover the purchase, construction or renovation of buildings and land, long-term machinery and equipment with at least ten years of remaining useful life, and refinancing of qualified debt under specific conditions. Working capital and inventory are not 504 purposes, which is a common point of confusion with the 7(a) program.

The rate structure is why buyers chase this. A 25 year fixed rate on 40 percent of the purchase, priced off Treasuries, is cheaper and longer than the balloon-in-five-years commercial debt most small buildings trade on. For a seller, the effect is that a 504 buyer can often pay more for your building than an investor can, because their cost of capital is lower and they are also saving the rent they currently pay somebody else.

What a 504 Does to Your Closing Timeline

Two lenders, one of which is a nonprofit coordinating with a federal agency, do not close as fast as one bank. Expect a longer escrow than a conventional purchase, and expect the delay to arrive at the end rather than the beginning.

Ask three questions before you sign a purchase agreement with a 504 buyer, and get the answers in writing:

Which CDC, and have they issued a term sheet? A buyer who has spoken to a CDC is a different prospect from one who has read about 504s online.
Is the third-party lender identified and committed? Half the money comes from a bank that has its own credit committee and its own timeline.
What is the outside date, and what happens if the SBA authorization slips past it? Build the extension mechanics into the contract instead of negotiating them under pressure at day 75.

What Kills a 504 Late, Which Is the Part That Costs You

A conventional deal that dies usually dies early. A 504 deal that dies tends to die after you have been off the market for two months. Three causes account for most of it.

The appraisal comes in under contract price. The 504 structure is sized off project cost, and a shortfall lands on the borrower as extra cash on top of their 10 or 15 percent. A buyer stretching to make the down payment often cannot cover an appraisal gap, so the deal reprices or dies. Our piece on what your commercial property is actually worth covers how to set a price that survives an appraisal rather than one that invites this.

The environmental report. SBA lending applies its own environmental screening, and findings hit these deals harder than conventional ones because a federal guarantee sits behind the debenture. A gas station, dry cleaner, auto property or older industrial building can be perfectly financeable conventionally and still stall here. Read our piece on the Phase I environmental site assessment before you go under contract with a 504 buyer on any of those asset classes, because the shelf life and the recognized environmental condition rules decide the outcome.

The buyer’s own business deteriorates during escrow. The collateral is your building, but the credit is their company. A bad quarter inside a 90 day escrow can move a marginal file from approved to declined, and nothing about your property changed.

For the wider financing picture your buyer is working inside, our 2026 guide to what a commercial deal actually requires covers the rest of the debt market this sits in.

When the Honest Answer Is a Different Buyer

Sometimes the 504 pool is the wrong pool for your building, and recognising that early is worth more than another 90 days of hoping.

Your property is a poor 504 candidate when it is fully leased to third parties, when it is a special purpose building and the interested buyers are young companies facing a 20 percent contribution, when there is an open environmental matter, or when your own timeline cannot absorb a two-lender escrow that might still fail at the end. A seller who has already had one financed contract collapse in diligence knows what the second attempt costs.

That is the situation we exist for. Skip The Agent works direct with owners and with investors who close without a lender, which removes the appraisal, the CDC, the SBA authorization and the environmental condition from your critical path. The price reflects that certainty, and we will show you the comparison rather than talk around it: what a 504 buyer would likely pay if the file cleared, what the delay and the risk of failure are worth in your specific case, and what a cash close pays today. If waiting for the right owner-occupant is the better answer, we will tell you that too.

Start at our seller page, or bring us the specifics at /commercial/contact.

Frequently Asked Questions

How much do you have to put down on an SBA 504 loan?

At least 10 percent of project costs in ordinary circumstances, per 13 CFR 120.910. That rises to at least 15 percent if the project involves a limited or single purpose building, at least 15 percent if the borrower has operated for two years or less, and at least 20 percent when both conditions apply. A car wash or hotel bought by a two-year-old company is the 20 percent case.

Can I use an SBA 504 loan to buy an investment property?

No. The 504 requires the borrower to occupy the property, so a passive investor cannot use one. Under 13 CFR 120.131 the borrower must permanently occupy at least 51 percent of the rentable property in an existing building, or at least 60 percent in new construction, which means the program is limited to owner-occupants who operate a business from the space.

What is the maximum SBA 504 loan amount?

The SBA states the maximum 504 loan amount is $5.5 million, which refers to the CDC debenture portion rather than the whole project. Because that piece is capped at 40 percent of project costs, a project can be considerably larger than $5.5 million overall, with the third-party lender funding the balance behind a first lien.

How long does an SBA 504 loan take to close?

Longer than a conventional commercial purchase, because two lenders underwrite in parallel and the CDC portion also needs SBA authorization. Sellers should build a realistic outside date and an extension mechanism into the purchase agreement rather than assuming a normal escrow, and should confirm early that the buyer has both a CDC and an identified third-party lender.

What are SBA 504 interest rates and fees?

The SBA describes the debenture rate as pegged to an increment above the current market rate for 10-year U.S. Treasury issues, with fees totalling approximately 3 percent of the debt, which may be financed into the loan. Terms of 10, 20 and 25 years are available, and the long fixed rate on the debenture portion is the main reason owner-occupants pursue this program.

Why does my building’s environmental history matter more to an SBA buyer?

Because a federal guarantee stands behind the debenture, SBA lending applies its own environmental screening, and findings that a conventional lender might price around can stop a 504 file. Fuel sites, dry cleaners, auto properties and older industrial buildings are the classes where this shows up most, and a seller on one of those should understand the Phase I process before going under contract.

Should I market my commercial property to SBA buyers or investors?

It depends on occupancy. A building with space a buyer can move into fits the owner-occupant pool, where a 504 buyer can often pay more than an investor because their cost of capital is lower and they stop paying rent elsewhere. A fully tenanted building cannot satisfy the 51 percent occupancy rule, so it belongs in front of investors instead.

Written by the Skip The Agent Commercial team. Direct to Owner. Built for Investors. Skip The Agent LLC is a direct-to-owner commercial acquisition company. We are not a licensed real estate brokerage, and nothing here is lending, tax, or legal advice.

Written by Addai Lewellen and Grant Umali, co-founders of Skip The Agent LLC. Addai brings deep experience in commercial real estate acquisitions and deal structuring across national markets. Grant leads operations, marketing, and investor relations. They handle every commercial deal personally — reach them at skiptheagent.llc/commercial or (574) 702-1622.