SBA 504 vs. 7(a) vs. Conventional: Choosing the Right Loan to Buy Your Building

Most business owners walk into their bank, ask about a mortgage for the building they want to buy, and take whatever the loan officer puts in front of them. That is a mistake worth six figures. Three distinct programs can finance an owner-occupied commercial purchase, and the one your banker leads with is usually the one that is easiest for the bank, not the one that is best for you.

The Short Version

An SBA 504 loan gets you into a building with roughly 10% down and locks a portion of the debt at a long-term fixed rate. An SBA 7(a) loan is more flexible about what it will cover but is usually variable-rate and carries a guarantee fee. A conventional commercial mortgage requires the most cash up front and closes the fastest with the fewest strings attached.

If you have limited cash and a long holding horizon, 504 is usually the answer. If you need to bundle the building with working capital or equipment in one facility, 7(a) exists for exactly that. If you have 25–30% to put down and want speed and simplicity, go conventional. The rest of this post is the detail behind those three sentences.

SBA 504: The Owner-Occupant's Default

The 504 program was built for this exact transaction, and its structure reflects that. The financing splits three ways: a conventional first mortgage from a bank covers about 50% of the project, a debenture issued through a Certified Development Company covers about 40%, and you contribute roughly 10%. Startups and special-purpose properties — car washes, restaurants, medical suites with heavy buildout — typically need 15%, and a startup buying a special-purpose property needs 20%.

Two features make it hard to beat. First, the CDC portion carries a fixed rate for the full 20 or 25 year term. In a market where conventional commercial loans reprice every five years, locking roughly 40% of your debt for a quarter century is real protection against a rate cycle nobody can predict. Second, the down payment. On a $2 million building, 10% is $200,000 instead of the $500,000 a conventional lender would want. That $300,000 difference stays in your operating business, which is almost always where it earns the higher return.

The costs are real too. Fees on the 504 side typically run about 2.5–3% of the debenture amount, though they are financed into the loan rather than paid at closing. The timeline is longer — expect 60 to 90 days, sometimes more, because you are underwriting with two lenders instead of one. The debenture carries a declining prepayment penalty in the early years, which matters if you might refinance and pull equity out sooner than planned. And you must occupy at least 51% of an existing building, the same threshold that applies across SBA real estate lending.

SBA 7(a): The Flexible One

The 7(a) program is the SBA's general-purpose lending vehicle. A single 7(a) loan can finance the building, the equipment going into it, the tenant improvements, working capital for the move, and a refinance of existing debt — all under one note with one closing. When your building purchase is really a business expansion that happens to include real estate, that consolidation is worth something.

The tradeoffs are structural. Most 7(a) loans are variable, priced at a spread over prime and adjusting quarterly. If you borrow $1.5 million and prime moves 200 basis points, your annual debt service moves roughly $30,000 — a number that arrives whether or not your revenue moved with it. Fixed-rate 7(a) options exist but lenders offer them selectively and price them accordingly. The SBA guarantee fee adds a few points on the guaranteed portion of larger loans. The standard 7(a) ceiling is $5 million, so a larger project pushes you toward 504 or conventional regardless of preference. And when the loan blends real estate with working capital, the amortization shortens from 25 years toward a blended weighted average, which raises the monthly payment.

Use 7(a) when the real estate is one component of a larger financing need. For a clean building purchase and nothing else, 504 almost always prices better.

Conventional: Speed and Simplicity, at a Price

A conventional commercial mortgage is the bank lending against the building on its own balance sheet with no government guarantee. Expect 20–30% down, a 20 to 25 year amortization, and very often a balloon at year five, seven, or ten — meaning you refinance the remaining balance at whatever rates exist on that date.

What you buy with the larger down payment is speed and freedom. A conventional deal can close in 30 to 45 days. There is no SBA eligibility review, no CDC coordination, no personal financial statements for every 20% owner in triplicate. There are no occupancy requirements, so you can buy a building you intend to occupy 40% of and lease out the rest — which is exactly what the tenant subsidy strategy depends on.

If you are bidding against other buyers, the shorter close is a genuine negotiating asset. Sellers discount for certainty. In a competitive situation the conventional buyer sometimes wins the building at a lower price than the SBA buyer offering more, and that price difference can offset a meaningful share of the extra down payment.

Running the Comparison on a Real Deal

Take a $2 million building and a business generating $600,000 in annual cash flow. Under 504, you put down $200,000 and finance $1.8 million, with roughly $1 million at a bank rate resetting in five years and $800,000 fixed for 25. Under conventional at 25% down, you put down $500,000 and finance $1.5 million with a balloon at year seven.

The conventional payment is lower, because the balance is smaller. But you spent an extra $300,000 of cash to get there. The right question is not which payment is smaller — it is what that $300,000 earns inside your business. If it funds a hire or a piece of equipment returning 25%, keeping it is worth roughly $75,000 a year against a few thousand in additional annual interest. If it would sit in an account earning nothing, the conventional structure and its lower payment win.

Run both scenarios in the ownership calculator with your actual numbers before you accept a term sheet. And whichever structure you choose, model the tax side in the same pass. A cost segregation study in year one can accelerate a substantial share of the purchase price into current deductions, and the resulting refund often exceeds the entire down payment difference between two of these programs. Financing structure and tax structure are the same decision made twice.

Get Two Term Sheets, Always

The single most valuable thing you can do is apply with more than one lender. Banks vary widely in appetite, and the same borrower routinely gets materially different pricing from two institutions in the same city. Ask specifically whether the lender does 504 loans in volume — many banks technically offer the program but process a handful a year, and the difference shows up as delays that cost you the deal.

Bring the same package to each: three years of business returns, interim financials, a personal financial statement, a debt schedule, and the purchase agreement. Knowing what lenders actually evaluate before you walk in changes the conversation from an application into a negotiation. The full walkthrough of comparing term sheets line by line is in Buy The Building, Keep The Profits.