Owner-Occupied Commercial Real Estate: Buying Your Building

By MercConsulting · Published 2026-08-17 · Updated 2026-08-30

Rent-vs-buy math, loan options from conventional to SBA 504 and 7(a), why the building often belongs in its own LLC, and how owning your building changes the exit.

If your business will occupy at least 51 percent of a building and you plan to be there seven or more years, buying often beats renting, and it takes less cash than most owners assume. SBA programs let established businesses buy their building with roughly 10 percent down, and the all-in monthly cost frequently lands near what you already pay in rent. The difference is that the payment stops rising on a landlord's schedule, part of it builds equity, and when you eventually sell the company you can keep the building as an income-producing asset.

Buying is not automatically right. Short horizons, fast-growing space needs, and thin cash reserves all argue for renting. But most owners never actually run the comparison. They renew the lease because renewing is easy, and they find out at exit that the landlord captured a decade of appreciation that could have been theirs.

This guide covers the rent-versus-buy math, what owner-occupied means to a lender, the three loan shapes and their general terms, why the building usually belongs in its own LLC, how underwriting reads the deal, and what owning your building changes when you sell the business.

Rent vs. Buy: The Decision Math

Put two numbers side by side over a ten-year horizon: the fully loaded cost of owning, and rent with realistic escalations.

Worked example: a $1.2 million building bought with 10 percent down through an SBA structure. Financing roughly $1.08 million at recent blended rates over 25 years runs in the neighborhood of $7,300 to $7,700 a month in principal and interest. Add property taxes, insurance, and maintenance, commonly $2,000 to $2,500 a month on a building this size in the Houston area, and the all-in cost is roughly $9,500 to $10,000. Now the rent side: the same space might lease at $8,000 a month today, but with 3 percent annual escalations it passes $10,400 by year ten, and you own nothing at the end of it.

Layer in the parts the simple comparison misses. A slice of every ownership payment is principal, which is equity rather than expense. The building can appreciate. Part of the space can be leased to a tenant. Depreciation typically shelters some of the rental income the property entity collects. Against all that: closing costs of roughly 2 to 4 percent, a down payment leaving your working capital, and the obligation to fix the roof yourself.

The real variable is the horizon. Transaction costs on the way in and out mean short stays favor renting. Somewhere around five to seven years the lines usually cross; past ten, ownership tends to win convincingly, provided the building still fits the business you will have then, not just the one you have now.

"Our rent went up 22 percent in one renewal cycle and there was nothing to negotiate. That letter is the reason we own the building we're in now."

What "Owner-Occupied" Means to a Lender

Lenders split commercial real estate into two very different products. Investor CRE is underwritten on the property's rental income. Owner-occupied CRE is underwritten on your business, and it gets better terms: lower down payments, longer amortizations, and access to SBA programs that investor deals do not have.

The usual threshold is that your operating business occupies at least 51 percent of the building's rentable square footage; new construction under SBA rules generally requires more, with plans to grow into it. Meet the threshold and you can lease the remaining space to tenants, and that tenant income can actually help the deal underwrite. Buying somewhat bigger than today's need, with the extra space rented until you grow into it, is a common and sensible structure.

The Three Loan Shapes

Conventional bank CRE

Typically 15 to 25 percent down, amortized over 20 to 25 years, but usually with a fixed-rate period of only 5 to 10 years, after which the rate resets or the note balloons and must be refinanced. This is the best pricing and fastest path for strong borrowers with real down-payment cash; the reset or balloon is the structural risk to plan around.

SBA 504

A two-loan structure: a bank finances roughly half the project, a certified development company funds about 40 percent through a debenture, and you put in around 10 percent. The debenture carries a long fixed rate, 20 or 25 years, which removes most reset risk on that portion. The 504 was built precisely for owner-occupied real estate and heavy equipment, and project costs can generally include renovations and soft costs. Prepayment penalties on the debenture decline over roughly the first ten years.

SBA 7(a)

The general-purpose SBA loan, usable for real estate with terms up to 25 years, fully amortizing with no balloon, and typically around 10 to 15 percent down. Rates are often variable. Its advantage is flexibility: a 7(a) can fold the building, improvements, equipment, and some working capital into one loan. We cover the program in depth in the SBA 7(a) guide.

A rough sorting rule: strong borrowers who value speed and can put 20-plus percent down often go conventional; owners who want minimum cash in and long fixed rates lean 504; owners bundling real estate with other needs, or who value full amortization, lean 7(a). All the ranges above are general and move with the market. The point is the shape of each product, not this month's rate sheet.

The Entity Structure: Put the Building in Its Own LLC

The near-universal structure for owner-occupied real estate is a separate holding LLC that buys the building and leases it to your operating company at a market-rate rent under a real written lease. Lenders see this every day, and SBA rules explicitly accommodate the eligible-passive-company arrangement. The benefits compound over time:

• Liability separation. The building is insulated from the operating company's business risks, and the operating company from the property's, subject to how well the formalities are maintained.
• Exit flexibility. You can sell the business and keep the building, sell both together, or sell the building alone. Holding them in one entity welds those decisions together.
• Planning room. The rental flow, depreciation, and eventual disposition of the building can be planned separately from the operating business, which is often useful for retirement income and estate planning.

Entity design is its own discipline, covering how many layers you need, where the building sits relative to other assets, and how it all connects. We walk through the framework in structuring portfolio assets and in our Protect practice.

How Underwriting Reads the Deal

Owner-occupied underwriting is a business-loan analysis wearing a real-estate wrapper. The core question: does the business's cash flow cover the new payment with room to spare? Lenders typically want global debt-service coverage, meaning business cash flow plus owner add-backs measured against all debt including the new mortgage, of roughly 1.20x to 1.25x or better. Helpfully, they add back the rent you will stop paying, which is often what makes the deal pencil.

Expect to produce two to three years of business and personal tax returns, interim financials, a debt schedule, and a projection showing the payment covered. The property side brings an appraisal and usually a Phase I environmental review. Personal guarantees from significant owners are standard on all three loan shapes. The cleaner your financial file, the better the structure you are offered; here is exactly how lenders read it.

The Traps and Hidden Costs

Budget beyond the down payment. Closing costs commonly run 2 to 4 percent of the project, and lenders want to see post-closing liquidity: buying the building should not drain the operating company's working capital to zero. If the purchase leaves you unable to absorb a slow quarter, you bought too much building or put too much down.

What Changes at Exit

Owning your building in its own entity opens three doors at sale time that renters do not have:

1. Sell the business, keep the building. The buyer signs a market lease with your property LLC, you convert from operator to landlord, and the building becomes retirement income. A committed owner-landlord with a long lease can actually make the business easier for a buyer to finance.
2. Sell both together. Some buyers want the real estate. Separate entities let you price and negotiate the building and the business independently instead of as one blended number.
3. Sell the building, lease it back. A sale-leaseback pulls capital out of the real estate while the business keeps operating in place, occasionally the right move ahead of a growth push or as part of a staged exit.

A market-rate lease already in place also keeps your P&L honest, which matters when a buyer's diligence team rebuilds your earnings. If a sale is even on the five-year horizon, the structure you set up at purchase is doing exit work today.

Frequently Asked Questions

How much down payment do I need for owner-occupied commercial real estate?

Generally 10 to 25 percent. SBA structures, both 504 and 7(a), commonly get established businesses in around 10 percent, sometimes slightly more for special-purpose properties or younger companies. Conventional bank loans typically want 15 to 25 percent. On a $1 million building, that is the difference between roughly $100,000 and $250,000 in cash, which is why SBA routes dominate first-time purchases.

What is the 51 percent owner-occupancy rule?

To qualify as owner-occupied, and to access SBA programs and better terms, your operating business generally must occupy at least 51 percent of the building's rentable space; new construction under SBA rules requires more, with growth plans. You can lease the remainder to tenants, and that rental income can help the loan underwrite rather than hurt it.

Is SBA 504 or 7(a) better for buying a building?

Neither is universally better. The 504 typically offers long fixed rates on a large slice of the project and shines for straightforward building purchases with about 10 percent down. The 7(a) is fully amortizing, somewhat more flexible, and can bundle the building with equipment and working capital. The right answer depends on the rate environment, the project mix, and your lender's appetite, so model both.

Should my business or a separate LLC own the building?

In most cases a separate holding LLC owns the building and leases it to the operating company at market rent. That separates liabilities, lets you sell the business while keeping the building, and gives the real estate its own planning track. Lenders and SBA rules accommodate the structure routinely. Set it up with your attorney and CPA at purchase, with a real written lease.

Can I rent out part of the building I buy for my business?

Yes. As long as your business occupies the required majority of the space, the rest can be leased to tenants, and lenders will often count that income in underwriting. Buying modestly bigger than today's need and renting the surplus is a common strategy; the tenants help carry the note until your growth absorbs the space.

This article is general education, not legal, tax, or investment advice. MercConsulting coordinates real-estate purchase strategy, financing, and entity structuring with licensed attorneys, CPAs, and lenders where the work requires it.