How a 504 loan is structured
SBA 504 finances owner-occupied commercial real estate and major equipment through three pieces of capital. A third-party lender, usually a bank, holds a first mortgage for 50% of project cost. A Certified Development Company funds up to 40% through a debenture that SBA guarantees at 100%. The borrower contributes at least 10%. The debenture carries a fixed rate for 10, 20 or 25 years; in fiscal 2025, 93% of debentures were written for 25 years.
The debenture is limited to $5 million outstanding per borrower and its affiliates, or $5.5 million per project for small manufacturers and for projects that cut energy use by at least 10% or produce renewable energy. Since July 4, 2026 a borrower who obtains a 7(a) loan first may combine up to $5 million of 7(a) and up to $5 million of 504 financing. The business must occupy 51% of an existing building or 60% of new construction.
MMCG's analysis of SBA 504 loan data shows the program's scale. In fiscal 2025 SBA approved about 6,600 504 loans with $7.6 billion in debentures, net of cancellations. Third-party lenders funded $1.40 of first-mortgage debt for every $1 of debenture, which puts total 504 project debt for the year at $18.3 billion. The median debenture was $748,000; one loan in six exceeded $2 million.
Who reviews a 504 feasibility study
A 504 study has three readers, and each applies a different test.
The CDC's credit committee reviews the project against SBA's eligibility and economic development rules. Most CDCs process under delegated authority: in fiscal 2025, 60% of approvals came through the Accredited Lenders Program, 17% through ALP Express and under 1% through the Premier Certified Lenders Program, with 14% submitted as 504 Basic for non-delegated SBA review. Non-delegated applications go to SBA's Loan Processing Center in Sacramento. Under SOP 50 10 8.1, the third-party lender's underwriting may now be submitted to Sacramento directly.
The third-party lender's credit committee underwrites its 50% first mortgage on conventional terms. That committee typically applies stabilized debt service coverage floors of 1.20x to 1.35x and loan-to-value caps of 65% to 80%, and it is governed by the bank's real estate lending policy, which federal regulators require to set standards for feasibility studies and for sensitivity analysis on interest rates, vacancy and operating expenses.
SBA reviews the file on approval for non-delegated loans and again on purchase if the loan defaults. The study has to hold up at both points.
When a 504 loan calls for a feasibility study
SBA regulations do not require a feasibility study on every 504 loan. Under 13 CFR 120.160(b) SBA "may require" one, and the CDC and the senior lender decide case by case. They ask for a study wherever the project's cash flow has no history: a start-up, a ground-up build, a change of use, a special-purpose property, or an acquisition in which the buyer will not continue the seller's operations.
The 504 program concentrates these cases. In fiscal 2025, start-ups made up 14% of all 504 approvals, but 33% of hotel approvals, 43% of car wash approvals, 41% of RV park approvals and 69% of self-storage approvals. Property types commonly treated as special-purpose accounted for 12% of 504 approvals and 21% of debenture dollars. Each of those files was underwritten on projections, and a projection without an independent study is a borrower's assertion.
The borrower contribution: 10%, 15% or 20%
Under 13 CFR 120.910 the borrower contributes at least 10% of project cost. The contribution rises to 15% when the project involves the acquisition, construction, conversion or expansion of a limited or single-purpose building, and to 15% when the business has operated for two years or less. When both apply, the contribution is 20%. The 504 start-up test is two years of operation, which is broader than the 7(a) definition.
Lenders and CDCs commonly treat hotels and motels, gas stations and convenience stores, car washes, campgrounds and RV parks, assisted living and nursing facilities, surgery and urgent care centers, bowling alleys, funeral homes with crematoriums, cold storage with more than 50% refrigerated area, golf courses and marinas as limited-purpose. Self-storage, fitness, breweries and veterinary hospitals are decided on the facility's design. The classification is functional: it turns on whether the building's layout or construction restricts its use, not on how it looks.
The classification also changes the appraisal. Special-purpose property is appraised as a going concern, with value allocated among real estate, furniture and equipment, and intangibles, and the appraiser's business value relies on the feasibility study's market and operating analysis. MMCG settles the classification question at scoping so that the contribution, the appraisal scope and the study scope are agreed before submission.
The economic development test
Every 504 project must meet a job creation or retention target or qualify under one of SBA's development goals. For loans approved on or after October 1, 2025 the target is one job created or retained within two years for every $95,000 of debenture, or $150,000 for small manufacturers and for projects meeting an energy public policy goal. Fiscal 2025 approvals reported roughly one job per $98,000 of debenture across the program.
A project that does not meet the job target may qualify under a community development goal (improving, diversifying or stabilizing the local economy; stimulating other business development; bringing new income into the community; assisting manufacturers; assisting businesses in labor surplus areas) or a public policy goal, which include business district revitalization, export expansion, women-owned, veteran-owned and minority-owned businesses, rural development, productivity and competitiveness, health, safety and environmental upgrades, areas affected by federal budget cuts, a 10% energy reduction, sustainable design and renewable energy. The study documents the employment ramp and, where a goal applies, the facts that support it.
What changed for 504 under SOP 50 10 8.1
SOP 50 10 8.1 with Technical Policy Updates took effect on October 1, 2026 under SBA Information Notice 5000-882227 and replaced SOP 50 10 8. Three changes matter for 504 feasibility work.
The minimum term on the third-party lender's first mortgage was removed, and the full 504 structure may carry a 25-year maturity when real estate is 51% or more of project cost, down from the prior 75% threshold. The third-party lender's underwriting may go to the Sacramento Loan Processing Center directly. And the coverage expectation on the 504 debenture now follows the same discipline as 7(a): repayment is shown from business cash flow at or above 1.15x, with change-of-ownership projects subject to the Appendix 15 categories and their historical coverage floors.
Appendix 15 also governs 504 acquisitions. Initial Acquisitions, Owner Buyouts and ESOP transactions must show 1.25x coverage on historical results; Business Expansions by an existing operator must show 1.15x. Projections may be relied on where the loan finances owner-occupied special-purpose property that the collateral fully secures, and where there is no continuity of operations and the lender underwrites the deal as a start-up. Both cases are the natural territory of a 504 feasibility study.
What a 504 feasibility study contains
An MMCG 504 study is delivered as one report covering economic, market, technical and financial feasibility. It carries everything a 7(a) study carries and adds the layers the three 504 readers require.
For the CDC: the job creation or retention projection reconciled to the $95,000 or $150,000 ratio, the public policy or community development basis where one applies, the occupancy test, and the eligibility facts the CDC must certify.
For the senior lender: a 10-year pro forma calibrated to market-indicated operating expenses, debt service coverage for every projection year on the first mortgage and on the combined structure, loan-to-value against the appraisal, and a sensitivity analysis that stresses occupancy and revenue at 5%, 10%, 15% and 20% below base case with NPV, IRR, DSCR and ROE recalculated at break-even.
For special-purpose property: an alternative-use analysis that shows residual value if the as-designed use fails, the highest-and-best-use determination the appraiser relies on, and treatment of the depreciation curve on specialized improvements.
The report closes with a global debt service coverage reconciliation covering the first mortgage, the debenture, existing senior debt and any subordinated obligations, and a feasibility determination reconciled to SOP 50 10 8.1 and 13 CFR Part 120.
The method is set out in full in MMCG's feasibility study methodology.
504 feasibility studies by asset class
Hotels and motels are the 504 program's largest industry by dollars: 368 approvals and $1.0 billion in debentures in fiscal 2025, an average debenture of $2.7 million, with a third of the loans to start-ups. Restaurants led by count with 537 approvals. Child care followed with 210, then fitness with 103, gas stations with 101, car washes with 97, assisted living with 64, self-storage with 61 and RV parks with 29.
Loss experience varies by asset. Across 504 loans approved from fiscal 2010 to 2019, the seasoned cohort, 1.49% have been charged off. Hotels sit at 2.52%, gas stations at 2.56% and RV parks at 2.84%. Car washes sit at 0.89%, assisted living at 1.33% and self-storage at 0.18%, the lowest of any major asset class. Restaurants sit at 2.09%. These are the figures CDC and bank credit committees carry into the room, and the study is calibrated to the asset's own record.
Asset-specific methodology is on the hotel, gas station, truck stop, car wash, RV park, self-storage, assisted living, medical, gym, restaurant, child care, funeral home, winery and brewery, cold storage, veterinary and bowling pages.
Cost and timeline
SBA 504 general-purpose owner-occupied real estate studies run $6,500 to $12,000. SBA 504 special-purpose property studies run $7,500 to $18,000 depending on complexity, covering hotels, gas stations, car washes, RV parks, gyms, surgery and dialysis centers, dental and veterinary specialty, funeral homes, wineries, breweries, distilleries and cold storage. Multi-site portfolios are priced on a tiered basis.
Standard delivery is 9 to 16 business days, with special-purpose and multi-site work toward the upper end of that range. Expedited delivery from 5 business days is available at a premium. Payment is 50% at engagement and 50% at delivery, with no hourly billing. Clarifications requested by the CDC, the senior lender or SBA during the approval window are made at no additional charge under MMCG's written acceptance guarantee. Proposals are returned within 12 business hours.
Request an SBA 504 feasibility study proposal: info@mmcginvest.com, (628) 225-1110.
FAQ
Does the CDC require a feasibility study for a 504 loan?
Not by rule. SBA "may require" a feasibility study under 13 CFR 120.160(b), and the CDC and senior lender decide case by case. They ask for one wherever repayment rests on projections: start-ups, construction, special-purpose property and acquisitions without continuity of operations.
How does special-purpose property change a 504 loan?
The borrower contribution rises from 10% to 15% for a limited or single-purpose building, and to 20% if the business is also two years old or less. The property is appraised as a going concern, and the CDC and senior lender expect an alternative-use analysis in the study.
What is the 504 job creation requirement?
One job created or retained within two years per $95,000 of debenture, or per $150,000 for small manufacturers and energy projects, unless the project qualifies under a community development or public policy goal. The study documents the employment ramp and the goal basis.
What coverage does the senior lender want on its first mortgage?
Senior lenders typically underwrite the 50% first mortgage to stabilized coverage of 1.20x to 1.35x and loan-to-value of 65% to 80%, under a real estate lending policy that regulators require to set standards for feasibility studies and sensitivity analysis.
Can a 504 study be used for the 7(a) loan on the same project?
Yes, where the sponsor combines programs. Since July 4, 2026 a borrower may pair up to $5 million of 7(a) with up to $5 million of 504 financing, and one study scoped to both credit standards serves both files.
How long does a 504 feasibility study take?
Standard delivery is 9 to 16 business days, with special-purpose property and multi-site portfolios toward the upper end. Expedited delivery from 5 business days is available. MMCG coordinates the schedule with the CDC's committee date.
Does MMCG prepare the appraisal as well?
No. The appraisal is a separate engagement with a Certified General appraiser, and on special-purpose property it is a going-concern appraisal. MMCG's study supplies the market and operating analysis the appraiser relies on, which keeps the two reports consistent without compromising either one's independence.
