Every spring, a handful of business owners walk into the bank with the same story. The lease is up in nine months. The landlord wants fifteen percent more to renew. A building across town just listed at $1.1 million, and 10,000 square feet would cover the next decade of growth. The owner wants to know if the math works.
Often it does — but not for the reasons most people think. Buying a commercial building in Minnesota isn't really a square footage question. It's a question of who owns the equity at year twenty, how the debt service coverage pencils out, and whether a 10% down SBA 504 loan makes better use of your cash than a 20% down conventional deal. Here's a framework for thinking about it — the specifics for any individual business will depend on variables we'll flag along the way.
The real question isn't rent vs. mortgage
Most lease-vs-own comparisons start with a rent number and a mortgage number, conclude they're roughly similar, and stop there. That misses the point.
Twenty years of rent gets you nothing but a landlord who raises your payment every few years. Twenty years of a mortgage gets you a paid-off building that, in most Minnesota markets, has the potential to appreciate over time. The real comparison is between an occupancy cost that compounds against you and an asset that can compound for you — plus locking your biggest fixed cost at a number that doesn't move with the market. (If you're newer to commercial financing, our overview of how commercial loans work differently than a home mortgage is a useful primer.)
That said, buying isn't right for every business. Fast-growing businesses that don't yet know their ten-year footprint, businesses that need a metro Class A address the market won't let them own economically, and businesses whose owners don't want another asset to manage are often better off leasing. The framework below helps you decide which camp you're in.
A worked example at $1.1 million
Assume a 10,000 square foot flex building (office plus warehouse) in a Greater Minnesota market like Hutchinson, Glencoe, or Waite Park. Purchase price: $1,100,000 — roughly $110 per square foot, which is consistent with current owner-occupied industrial and flex pricing in those markets. Current rent the business is paying: $10 per square foot gross, or $100,000 a year — about $8,333 a month.
For context, the same building in a Twin Cities suburban submarket would typically run higher in today's pricing. The financing structure and math below scales proportionally — the percentages and mechanics don't change, just the dollar amounts.
Two financing paths are worth comparing. The rates below reflect current market pricing as of the time of writing — the SBA 504 debenture rate offering is re-priced monthly, and conventional commercial mortgage rates move with the bond market, so the specific numbers any individual reader will see from a lender could be meaningfully different by the time the conversation happens. The structure of the comparison doesn't change; the dollar amounts do.
Conventional commercial mortgage. Owner-occupied conventional typically runs 20%–25% down. At 20% down, the borrower brings $220,000 and finances $880,000. At a competitive 6.50% rate over a 20-year amortization, principal and interest come in around $6,560 per month. Add property taxes, insurance, and maintenance reserves — typically $2,500–$3,000 a month on a building this size in Greater Minnesota — and the all-in monthly cost is in the neighborhood of $9,100–$9,600.
SBA 504 loan. The 504 is structured as 50/40/10. A conventional lender holds a first mortgage at 50% of the project ($550,000), a Certified Development Company (CDC) holds a second mortgage at 40% through an SBA-guaranteed debenture ($440,000), and the borrower puts down 10% ($110,000). Using the same 6.50% on the bank first and the current 5.86% effective rate on the 20-year CDC debenture (the April 2026 monthly debenture sale rate published through NADCO), the bank first comes in around $4,100 per month, the CDC portion around $3,120, for a combined P&I of roughly $7,220 per month. All-in with taxes, insurance, and maintenance, you're looking at $9,700–$10,200 a month.
So the 504 runs about $660 a month more than conventional, but the borrower has kept $110,000 of working capital in the business that the conventional path would have tied up in equity. That preserved capital is the real 504 story. Whether it's worth the higher monthly depends on what the business can do with $110,000 — if it earns more than the blended borrowing cost in the business, the 504 wins. If it sits idle, conventional is slightly cheaper over the life of the loan. The right answer is specific to each situation.
Compared to the current $8,333 rent, ownership under either structure costs somewhat more out of pocket in year one. The case for owning builds over time as rent escalates (typically 2.5%–4% annually in most Minnesota markets) while the debt service stays fixed on the mortgage portion. Equity also builds from day one — roughly $22,000 of principal paydown in the first twelve months on the conventional structure, and comparable amounts on the 504. (Again, at the rates above — lower rates front-load more principal, higher rates less.)
What the SBA 504 program actually is
A few things about the 504 matter more than most owners realize when they first hear about it.
Owner-occupancy rules. The borrower's business has to occupy at least 51% of the building in an existing property or 60% in new construction. The remaining square footage can be leased to tenants at market rent — that rental income offsets the mortgage and, if projected conservatively, can help the deal clear underwriting.
Project size. Most 504 loans cover projects up to around $5.5 million in total (higher for certain manufacturing and energy-efficient projects). The CDC's debenture piece is capped, but the bank's first mortgage has no SBA-imposed ceiling, so combined projects can go above that when the first mortgage grows.
Eligible costs — and what can be financed. Land, building, renovations, fixed equipment, and professional fees all roll into the 504 project amount. Importantly, most closing costs on the 504 side — CDC processing fee, SBA guaranty fee, funding fee, underwriter's fee, appraisal, Phase I environmental, title, and closing legal — are financed into the debenture rather than paid out of pocket. The bank's first-mortgage closing costs are separately negotiated and generally paid at closing, but the magnitude is smaller. Borrowers should still budget for a handful of out-of-pocket items like credit report fees, recording fees, and any costs above the CDC's eligible closing-cost cap. Working capital and inventory don't fit the 504 — that's the SBA 7(a) loan, a different program that fits different situations.
Fixed rate on the 504 portion. The CDC's 40% piece is fixed for 20 or 25 years. For owners who remember the rate environment of 2021 versus 2023, that kind of predictability on 40% of the project has value the spreadsheet doesn't fully capture.
Job creation. Standard 504 requires creating or retaining roughly one job per $75,000 of debenture, though that test is waived for certain public policy goals or manufacturing deals. Most growing businesses clear it without effort.
For the longer comparison between 504 and 7(a), our earlier piece on SBA loan options for Minnesota businesses walks through which program tends to fit which situation.
The debt service coverage test
Before structure matters, the deal has to clear debt service coverage. Most lenders want to see a DSCR of 1.20x or better on owner-occupied commercial real estate — meaning net operating income covers the annual debt payment at least 120%.
Running the $1.1M example at the rates above: annual debt service comes in around $78,700 on the conventional structure and $86,600 on the 504. A 1.20x DSCR requires the business (plus any tenant rent on leased space) to generate at least $94,500–$104,000 in net operating income available to service the debt, depending on structure. For a business currently paying $100,000 in rent, that math is often workable — the rent was already leaving the P&L, and now it's servicing a mortgage instead. Move the rates up or down, and the required NOI moves with them — another reason the conversation with a lender on live pricing matters.
Where DSCR gets tight is when a business is stretching to buy a building bigger than it needs without a credible plan to lease the excess space. That's where the 51% owner-occupancy rule interacts with underwriting: lenders typically want to see either a signed tenant lease or a defensible lease-up assumption before counting rental income toward DSCR. If you want the longer walkthrough, our piece on how commercial real estate deals get underwritten covers DSCR, LTV, and related concepts in more depth.
A few things worth considering before you buy
Five considerations that tend to matter more than first-time commercial buyers expect.
Transaction costs. Between appraisal, Phase I environmental, title, survey, legal, CDC fees on 504 deals, and SBA guaranty fees, expect total closing costs in the 3%–5% range of the full project. On the 504 structure, most of that rides on the debenture side and is financed into the loan (see above) — but the budgeting exercise still matters, and a few line items will come out of pocket.
Planning for excess space. If the building has room for a tenant, many owners find it worth underwriting the lease income conservatively and planning the buildout before closing. Vacant square footage is an opex line; leased square footage offsets the mortgage.
Holding structure. Many business owners hold the building in a separate real estate LLC that leases the space back to the operating business at market rent. This structure separates legal risk, can create cleaner depreciation, and preserves optionality if the business is sold later. Whether it's right for any individual situation depends on tax, liability, and estate planning considerations that call for a CPA and attorney at the table — not every owner benefits from the complexity.
504 vs. 7(a). For straight owner-occupied real estate, the 504 often fits better. The 7(a) earns its place when you need working capital rolled into the loan, when the deal is small enough that the 504 overhead doesn't pencil, or when a specific situation (partner buyout, inventory financing) fits 7(a) better. The choice is situation-specific.
How this differs from investment real estate. Buying a building you're going to occupy is a different underwrite than buying a building to lease out to third parties. If investment CRE is actually what you're thinking about, the investment real estate version of this conversation is a better starting point.
If you're inside nine months of a lease decision, that's the window where a conversation with our business lending team tends to be useful. The answer isn't always buy — sometimes the math says renew and reconsider in three years. But running it correctly beats guessing.
Thinking about the eventual exit
One angle worth flagging for owners who are still a decade or more from a business sale: the real estate can be structured to live past the operating company. Some owners sell the operating business and keep the building, then lease it back to the new owner on a long-term triple-net lease. That converts what used to be an occupancy cost into a potential income stream backed by a tenant who has every reason to stay.
This kind of structure sits at the intersection of commercial real estate, business succession, and estate planning — and it's much easier to set up fifteen years ahead of a sale than fifteen months. For owners who are starting to think about eventual transition, a commercial lender and our trust and wealth team at the same table early in the decision can be worth the meeting.
Minnesota-specific context
The owner-occupied market in our footprint splits along a few lines worth understanding.
In the Twin Cities metro, industrial and flex space has been the most active category for owner-occupied purchases — distribution, light manufacturing, contractor yards, and trades businesses. Pricing varies sharply by submarket, but owner-occupied industrial has held relatively firm compared to office through the last two years.
In Greater Minnesota — McLeod, Carver, Sibley, Isanti, and the surrounding counties — the mix tilts more toward office-warehouse hybrids, professional services buildings, and purpose-built facilities. Pricing per square foot is typically lower than the metro, but the buyer pool is narrower, which matters at resale. For owners with a fifteen-year horizon in a Greater Minnesota market, that narrower buyer pool is sometimes a feature, not a bug. The piece on what drives the value of commercial property over time has more on the market-condition variables.
FAQs about buying a commercial building in Minnesota
How much down payment do I need to buy a commercial building?
Conventional commercial mortgages typically require 20%–25% down on owner-occupied property. SBA 504 loans can go as low as 10% down for most owner-occupied deals. Special-purpose properties (hotels, gas stations, self-storage) typically require 15% down under 504, and startups using 504 usually need 15%–20%. The 10% 504 structure is the biggest cash advantage for growing businesses that want to preserve working capital — whether that preserved cash is worth the marginally higher monthly payment depends on how the business will use it.
What's the difference between an SBA 504 loan and an SBA 7(a) loan for real estate?
The 504 is purpose-built for real estate and heavy equipment. It features a fixed-rate 20- or 25-year second mortgage on the 40% CDC portion, a lower down payment, and no SBA fee on the bank's first-mortgage piece. The 7(a) is more flexible — it can roll in working capital, inventory, and business acquisition costs — but typically carries a variable rate and an SBA guaranty fee on the full loan. For straight commercial real estate, the 504 is often the better fit; for situations that need capital beyond the building itself, the 7(a) is worth considering.
Can my business rent from me if I own the building?
Yes, and it's a common structure. The building sits in a real estate holding LLC, and the operating business pays fair-market rent to that LLC. This setup can separate liability, create cleaner depreciation, preserve optionality if the business is sold later, and keep financing straightforward. Rent has to be set at fair market value — not artificially high or low — to hold up under IRS scrutiny, and the overall structure should be reviewed by your CPA and attorney before closing.
How long does it take to close an SBA 504 loan?
A clean SBA 504 loan typically closes in 60 to 90 days from a complete application. The bank underwrites the first mortgage in parallel with the CDC's underwriting of the 504 portion, and SBA approval runs alongside. Deals move faster with an existing banking relationship, a complete document package on day one, and clean financials. They move slower with incomplete applications, environmental issues, or mid-underwriting changes in the business's financial picture.
What happens to the SBA 504 loan if I sell my business?
The 504 is secured by the real estate and typically held by the real estate LLC rather than the operating business. If the operating company is sold and the building is kept, the loan generally stays in place — the new operator leases from the seller, and rental income services the debt. If the building is sold along with the business, the 504 is typically paid off at closing or assumed by the buyer if they qualify. Either path works — holding the real estate in a separate LLC from the start keeps both options open.
The next move
Buying a commercial building isn't a universal answer. The right call depends on growth trajectory, cash position, geographic flexibility, and the owner's appetite for real estate alongside the operating business. The question usually comes down to two things worth testing against your own numbers: whether debt service coverage clears the bar on a realistic rent-replacement basis, and whether the building's geography and layout fit where the business is going over the next fifteen years.
If you're inside nine months of a lease renewal and starting to do the math, the most useful next step is a conversation with a commercial lender who has closed enough owner-occupied deals to walk through your variables quickly. Our business lending team is the right place to start that conversation, and the business loan guide lays out what to bring to the first meeting.
The rent you're paying next year is already spent. Whether it's building equity or building someone else's is the only question worth answering.
