SBA 504 loan underwriting is a review shared by two lenders: a bank that makes a senior loan and a Certified Development Company that makes a second, SBA-backed loan, with the owner adding equity. Both check that the project is an eligible fixed asset, that the business will occupy the building, and that its cash flow covers both loans.
How does SBA 504 loan underwriting split work between the bank and the CDC?
SBA 504 loan underwriting splits work between two parties. The bank underwrites and funds a senior loan secured by a first lien on the property. The Certified Development Company (CDC), a nonprofit authorized by the SBA, underwrites the junior 504 loan and submits it for SBA approval. Each lender reviews the whole business, but for its own position.
The SBA's 504 loan program page describes CDCs as community-based nonprofit organizations authorized to originate 504 loans alongside a senior lender. It lists the standards a borrower must meet, including qualified management expertise, a feasible business plan, good character and the ability to repay.
In practice the bank often moves first. It decides whether it wants the senior loan, then the CDC prepares its own credit analysis, eligibility review and application package. Because both lenders depend on the same cash flow, their analyses usually start from the same tax returns, interim financial statements and bank statements. Differences show up in emphasis:
- The bank focuses on its first lien, the loan-to-value of its share and the borrower's overall relationship with the bank.
- The CDC focuses on program eligibility, the borrower contribution, occupancy, the public policy goal and coverage across the whole debt stack.
- The SBA reviews the CDC's package and issues the authorization that sets the 504 loan's terms.
A deal can fail at any of the three stages. A file the bank likes may still be ineligible for 504, and a file the CDC likes may not suit the bank's appetite.
Borrower contribution rules for a 504 project
The borrower contribution is the equity the owner puts into a 504 project, in cash or eligible property such as land. The rule, in 13 CFR 120.910 as published by Cornell's Legal Information Institute, requires at least 10% of project cost in most cases, 15% for a new business or a special purpose building, and 20% when both apply.
The higher tiers are triggered by two conditions in the regulation:
- The borrower, or the operating company when the borrower is a holding company, has operated for two years or less.
- The project involves acquiring, building, converting or expanding a limited or single purpose building, such as a car wash or a bowling alley.
Underwriters verify that the contribution exists and where it came from. Bank statements carry most of that proof. The analyst wants to see the funds seasoned in the owner's or company's accounts, or traced to a documented source such as a sale of assets or a gift letter. A large deposit that lands a week before closing with no explanation can stall the file.
A worked project split
The figures below are an example for a fictional dental lab buying an existing building. The 50% bank share and 40% CDC share are an example structure, and the business has operated for six years, so the 10% minimum applies.
| Line (example) | Amount | Share |
|---|---|---|
| Purchase price | $1,800,000 | |
| Renovation | $200,000 | |
| Project cost | $2,000,000 | 100% |
| Bank senior loan, first lien | $1,000,000 | 50% |
| CDC 504 loan, second lien | $800,000 | 40% |
| Borrower contribution | $200,000 | 10% |
If the same lab had opened 18 months earlier, the contribution would rise to at least $300,000, and one of the two loans would shrink by $100,000.
Owner occupancy tests for 504 buildings
Owner occupancy tests require the business to use most of a building financed with a 504 loan. Under 13 CFR 120.131 as published by Cornell's Legal Information Institute, an existing building must be at least 51% occupied by the business. A new building must be at least 60% occupied, with the rest leased out at no more than 20% permanently.
For new construction the rule adds a plan: the business must intend to occupy some of the remaining space within three years and all space not permanently leased within ten years. The program funds growing businesses, not landlords.
Underwriters check occupancy with floor plans, rent rolls and leases. Bank statements play a supporting part. Rent deposits from tenants show up in the borrower's account and should match the leases. A tenant paying more than its lease says, or tenants not listed at all, suggest more of the building is let than the application claims.
Occupancy also affects the coverage test. Rent from tenants helps service the debt, but it is not the main source of repayment. If the business would need most of the tenant income to cover the loans, the project looks more like an investment property, which the program excludes.
Job creation and eligible uses in a 504 application
Job creation and eligible uses decide whether a 504 request belongs in the program at all. The SBA describes 504 loans as long-term, fixed rate financing for major fixed assets that promote business growth and job creation. The CDC must document how the project serves that goal, usually through jobs created or retained.
The SBA's program page lists what the money can pay for: buying, building or renovating existing buildings or land, and long-term machinery and equipment with a useful life of at least ten years, plus certain qualifying refinancing of debt. It also lists what 504 cannot fund: working capital, inventory, non-qualifying debt and speculation or investment in rental real estate.
The same page gives maturities of 10, 20 or 25 years, with the 504 rate pegged above the 10-year Treasury rate.
The job count is an estimate, and the CDC records it in the application. Underwriters look for a plausible link between the project and the hiring. A bakery adding a second oven line and four bakers tells a consistent story. A consulting firm buying a much larger building with no plan to add staff needs another public policy basis or a different program.
Debt service coverage for the 504 operating company
Debt service coverage for a 504 file compares the operating company's cash available for debt service with the annual payments on both the bank loan and the CDC loan, plus any other business debt. Because the two loans share one source of repayment, a lender cannot test its own loan alone and ignore the other.
The coverage build follows the usual commercial method, with one 504-specific adjustment. In an owner-occupied purchase the business stops paying rent to a landlord, so the old rent is added back to cash flow and replaced by the new debt service. The method, including global cash flow for guarantors, is worked through in commercial loan underwriting.
Continuing the dental lab example, with example figures:
| Line (example) | Amount |
|---|---|
| EBITDA before rent | $410,000 |
| Bank loan payments, 25 year amortization | $84,800 |
| CDC loan payments, 25 year term | $65,000 |
| Existing equipment loan | $30,000 |
| Total debt service | $179,800 |
| Coverage | 2.28 |
The lab used to pay $132,000 a year in rent. Its two new loans cost $149,800 a year, about $17,800 more than the rent, and in exchange the owners pay down debt on a building they own. The add-back matters: without it, the old rent and the new payments would both count against the same cash. Coverage minimums are set by each lender's policy and by SBA rules, so the 2.28 here is only an example result.
Which bank statements does a 504 underwriter review?
A 504 underwriter reviews the operating company's business bank statements, the statements of any holding company that will own the building, and the personal statements that show where the borrower contribution comes from. The business statements test reported revenue and debt. The personal statements prove the equity is real.
Most files include several months of business statements, and many lenders ask for twelve. The analyst uses them to:
- Tie deposits to revenue on the tax returns and interim statements.
- Find all debt payments, including any equipment loans or advances not on the debt schedule.
- Confirm current rent payments, which feed the rent add-back in the coverage test.
- Check minimum balances and NSF items for signs of strain.
- Trace the borrower contribution to its source.
The same statement review supports other owner-occupied and growth deals. Franchise buyers often use 504 for the real estate under a new unit, covered in franchise loan underwriting. Buyers of an existing company face a seller earnings review set out in business acquisition loan underwriting.
Building a year of monthly totals for two or three entities is slow. TrueBankFlow reads the statements for each uploaded account, lines up months, labels transfers between those accounts and flags large deposits with the line behind them, which helps when tracing an equity injection. Eligibility and approval remain with the bank, the CDC and the SBA.
When a 504 loan is the wrong program
A 504 loan is the wrong program when the borrower needs working capital or inventory, wants to buy property mainly to rent to others, needs funds quickly, or is buying assets with a short useful life. The program funds long-lived fixed assets for a business that will use them, through a process involving three parties.
Cases that point elsewhere:
- Working capital and inventory, which the SBA page excludes. A line of credit or a 7(a) loan fits better.
- Investment property. A building mostly leased to others fails the occupancy test.
- Short-lived equipment. Vehicles or computers with a short life fall outside the ten year useful life the program page describes for machinery.
- Tight deadlines. Two lenders and an SBA authorization take time. A seller demanding a fast close may not wait.
- Business acquisitions where most of the price is goodwill rather than real estate or equipment.
Teaching new analysts to spot these early saves wasted applications. The skills behind that sit in training new underwriters.