For a business buying or building its own property, SBA 504 sets the borrower's minimum contribution at 10% to 20% of project cost and splits the debt between a bank and a Certified Development Company (CDC), while 7(a) is a single loan that can also fund working capital, an acquisition or debt payoff. Both require the business to occupy at least 51% of an existing building or 60% of new construction. The right choice depends on what else the loan has to pay for, the size of the project and how long you expect to hold the debt.
This reference sets out the rules that drive that choice, each tied to the regulation or SBA page it comes from. It reflects SBA's SOP 50 10 8.1, which took effect October 1, 2026, and the regulations as published in October 2026.
The two programs at a glance
| SBA 504 | SBA 7(a) | |
|---|---|---|
| Structure | Bank first mortgage, CDC second-lien loan, borrower contribution | One loan from one lender, partly guaranteed by SBA |
| SBA program limit | CDC portion: $5,000,000; $5,500,000 per project for small manufacturers and certain energy projects (13 CFR 120.931) | $5,000,000 loan; SBA's maximum exposure $3,750,000 |
| Guaranty | CDC portion is SBA-backed | 75% on standard 7(a) loans ($350,001 to $5,000,000) |
| Minimum borrower contribution | 10%, 15% or 20% of project cost (13 CFR 120.910) | Set by the lender within SBA's SOP rules (see below) |
| Real estate maturity | 10-, 20- and 25-year maturity terms available | Up to 25 years, plus time to complete construction or improvements (13 CFR 120.212) |
| Rate basis | CDC portion pegged to an increment above the 10-year Treasury | Fixed or variable; SBA caps variable rates at a maximum spread over a base rate |
| Eligible uses | Land, buildings, construction, renovation, long-life equipment, qualified debt refinancing | Real estate plus working capital, equipment, business acquisitions, debt refinancing |
| Not eligible | Working capital, inventory, speculation, rental real estate investment | Real estate the business does not occupy at the required share |
| Occupancy | 51% of an existing building; 60% of new construction (13 CFR 120.131) | Same |
Program limits and structure come from SBA's 7(a) terms page and its 504 program page; the regulation citations are noted where they apply. SBA's own 504 page gives a $5.5 million maximum in one place and "up to $5 million" in its summary; the regulation explains the difference, because the higher figure applies only to the project-based categories in 120.931.
Borrower contribution: where the 504 saves cash
The 504 contribution is set by regulation, as a share of project cost excluding administrative costs, under 13 CFR 120.910:
- 10% in the standard case.
- 15% if the business (or the operating company, when a property-holding entity owns the building) has operated two years or less.
- 15% if the project involves acquiring, building, converting or expanding a limited or single-purpose building or structure.
- 20% if both conditions apply.
Under 13 CFR 120.920, the third-party lender's loans must at least equal the 504 loan, and must cover at least 50% of project cost when the business is two years old or less or the property is limited or single purpose. A common structure, used in the example below, keeps the bank at 50% and lets the CDC loan absorb the difference when the contribution rises.
For 7(a), there is no single regulatory percentage for an established business buying its building; the lender sets the equity requirement within SBA's SOP 50 10, which has separate rules for start-ups and business acquisitions. Our guide to commercial real estate down payments walks through those 7(a) rules and how they compare with conventional bank and agency financing.
The occupancy rule, in square feet
13 CFR 120.131 applies to both programs:
- Existing building: the business must permanently occupy and use at least 51% of the rentable property and may permanently lease up to 49%.
- New construction: the business must permanently occupy and use at least 60%, may lease up to 20% from the start, and must plan to occupy some of the remaining space within three years and all of it within ten years.
On a 20,000-square-foot existing building, the business needs 10,200 square feet and can lease up to 9,800. On a 20,000-square-foot new building, it needs 12,000 square feet at completion, can lease 4,000, and must hold the last 4,000 for its own growth.
When a property-holding company owns the building and leases it to the operating business, SBA treats them together: the operating company, or several affiliated operating companies combined, must meet the same percentages.
Loan limits and the new $10 million combined cap
The 7(a) maximum is $5 million per loan, and SBA's guaranteed share is capped at $3.75 million. The 504 limit applies only to the CDC loan, so the total project can be far larger. At a 50% bank, 40% CDC and 10% borrower split, a $5,000,000 CDC loan corresponds to a $12,500,000 project. At a 10% contribution, a $5,000,000 7(a) loan supports a project of about $5,555,556.
SBA announced on July 7, 2026 that, effective July 4, a qualified borrower who secures a 7(a) loan first can receive up to $5 million through 7(a) and up to $5 million through 504, or $10 million combined. The previous cumulative cap was $5 million. The same release says small manufacturers can obtain an unlimited number of 504 loans if each is tied to a distinct project.
Worked example: a $3 million owner-user purchase
An established distributor buys an existing flex building for $2,700,000 and budgets $300,000 for renovation, a total project cost of $3,000,000 before administrative costs. It will occupy 60% of the building, above the 51% minimum. These are illustrative figures, not a quote or an offer of terms.
504, standard case (business operating more than two years, general-purpose building):
| Source | Share | Amount | Lien |
|---|---|---|---|
| Bank first mortgage | 50% | $1,500,000 | First |
| CDC loan (SBA-backed) | 40% | $1,200,000 | Second |
| Borrower contribution | 10% | $300,000 | |
| Total project cost | 100% | $3,000,000 |
The same project if the 15% or 20% contribution applies:
| Case | Borrower | Bank (50%) | CDC loan |
|---|---|---|---|
| Business two years old or less, or limited or single-purpose building | $450,000 (15%) | $1,500,000 | $1,050,000 (35%) |
| Both conditions | $600,000 (20%) | $1,500,000 | $900,000 (30%) |
SBA's 504 page puts the total cost of the CDC financing at approximately 3% of the debt, or about $36,000 on the $1,200,000 CDC loan in the standard case. The bank's fees on the first mortgage are separate.
7(a), assuming the lender requires 10% equity: a single $2,700,000 loan with a $300,000 contribution. Under the standard 7(a) guaranty of 75%, SBA guarantees $2,025,000 of it. Whether a 7(a) lender asks for 10%, 15% or more on an established business's building purchase is a credit decision, and a higher requirement widens the cash difference between the programs.
Prepayment on the 7(a). On a 7(a) term of 15 years or more, SBA's fee applies when the borrower prepays 25% or more of the balance within three years of first disbursement. On this loan that threshold starts at $675,000 at closing. If the owner sold the building in year two and repaid $2,500,000, the fee would be 3%, or $75,000; in year one it would be 5% ($125,000) and in year three 1% ($25,000). On a 504, ask the bank and the CDC for the prepayment terms of each piece and compare them before deciding which program fits a shorter hold.
Debt service and how lenders underwrite
SBA's 504 page lists ability to repay among its eligibility standards, and for an owner-occupied building that repayment comes from the operating business. Each lender and CDC applies its own coverage requirement within SBA's rules. Before applying, model the business's historical cash flow against the combined payment on all new debt, including any seller note or equipment financing, with our DSCR calculator.
Collateral rules differ too. SBA's terms page defines a "fully secured" 7(a) as one where the lender holds liens on all assets being acquired with the loan plus available fixed assets up to the loan amount; smaller 7(a) loans follow lighter collateral rules. On a 504, the CDC loan generally takes a second lien on the project property behind the bank.
7(a) applicants must also show that the credit they need is not available on reasonable terms from non-government sources, which lenders document in the file.
Which program fits which deal
504 tends to fit when:
- The money is going almost entirely into real estate or long-life equipment.
- Cash at closing matters more than speed or simplicity.
- The project is larger than a $5 million 7(a) loan can support, including new construction. Our construction financing page covers how ground-up projects are typically structured.
- The owner wants part of the debt priced off the 10-year Treasury for a long term.
7(a) tends to fit when:
- The loan also needs to cover working capital, inventory, a business acquisition or existing business debt.
- One lender and one set of loan documents is worth more than the 504's lower contribution.
- The project is smaller, and the cost of a second loan outweighs its benefit.
Consider pairing them when an owner is buying a business and its building together and the total need exceeds the $5 million limit of either program alone.
Lender appetite varies by program, industry and loan size. Our SBA loans page covers both programs and how to start a request. For how SBA lenders fit among banks, credit unions and private lenders, see types of commercial lenders explained.
Bottom line
Start with what the money has to pay for. If it is the building alone, the 504's 10% minimum contribution and long-term CDC piece can lower the cash needed at closing, at the cost of two lenders and two sets of documents. If the loan also has to fund the business itself, 7(a) is the simpler tool, and since July 2026 a borrower who takes the 7(a) first can add a 504 for up to $10 million combined. Either way, the business must occupy at least 51% of an existing building or 60% of a new one, and the lender and CDC set the final terms after underwriting.
Sources checked October 30, 2026. SBA updates SOP 50 10 and its program pages periodically; we recheck these figures monthly.