In one paragraph: a commercial mortgage finances property used for business purposes — and it is underwritten on the property’s income and the strength of the deal, not on a paystub. Understand how a lender reads net operating income, coverage, and your exit plan, and you understand commercial lending.
What a commercial mortgage is
A commercial mortgage is a loan secured by real estate that earns its keep: office and retail space, warehouses and light industrial, larger multifamily buildings, mixed-use properties with storefronts below and apartments above, hospitality, and investment property held inside an LLC or other entity. The common thread is purpose. Where a home loan finances the place you live, a commercial mortgage finances an asset that produces income or houses a business — and everything about the loan follows from that difference.
Because the property is a business, the loan is evaluated like one. The building’s rent roll, its operating expenses, the quality and length of its leases, the local market it sits in, and the experience of the person or entity borrowing all become part of the file. That makes commercial lending less standardized than the conforming residential world — there is no single rulebook every lender follows — and it makes preparation and comparison worth real money.
How it differs from a residential loan
The clearest way to see the difference is to ask what question each loan answers. A residential lender asks: does this person’s income comfortably support this payment? A commercial lender asks: does this property, run by this borrower, generate enough income to carry this debt — and if something changes, how do we get repaid? Personal credit and finances still matter, especially where a guaranty is required, but the center of gravity moves from the borrower’s W-2 to the property’s performance.
The mechanics move with it. Commercial loans are commonly held by banks, credit unions, debt funds, and private lenders rather than sold into the conforming machine, so terms are negotiated rather than standardized. Documentation centers on the property: operating statements, rent rolls, leases, tax returns for the entity, and a schedule of the borrower’s other real estate. Timelines run longer, third-party reports go deeper — commercial appraisals and environmental reviews are more involved than a residential appraisal — and the loan usually closes in the name of an entity rather than an individual, which is its own planning topic; see financing property in an LLC.
What lenders actually underwrite
Three ideas do most of the work in commercial underwriting. The first is net operating income — what the property earns after operating expenses but before debt payments. Everything starts here, because NOI is what services the loan. The second is debt service coverage: the ratio of that income to the proposed payment, the lender’s cushion against vacancy, repairs, and surprises. It is the same logic investors meet in residential DSCR lending, applied with more rigor; our DSCR calculator is a fast way to feel how the ratio behaves. The third is loan-to-value — how much of the property’s appraised value the lender will advance, with the balance coming from your equity.
Around those three, lenders weigh the texture of the deal: tenancy and lease maturities, the property’s condition and any deferred maintenance, the strength of the market, the borrower’s track record with similar assets, and liquidity after closing. A property with one tenant and a lease expiring next year reads very differently from the same building fully leased on long terms — even if today’s income is identical. If you want to compare properties before financing enters the picture at all, the cap rate calculator isolates what the asset earns relative to its price.
How the loans are structured
Commercial structures differ from the fully amortizing residential template in ways that matter. Many loans amortize on a long schedule but mature earlier, leaving a balance due at maturity — the balloon. That is not a defect; it is the design, and it means the exit plan (refinance, sale, or payoff) is part of the decision on day one. Our commercial mortgage calculator models exactly this amortization-and-balloon shape so the whole obligation is visible, not just the monthly line.
Other levers include fixed versus adjustable pricing periods, interest-only windows while a property is stabilized or renovated, prepayment provisions that can make an early exit expensive if they are ignored at signing, and recourse — whether the borrower personally guarantees the debt or the lender’s remedy is limited to the property. Shorter-term needs have their own tools: bridge loans for transitions, fix-and-flip financing for heavy value-add projects, and portfolio loans where a lender keeps the loan on its own books and can flex where standardized programs cannot.
Commercial loan rates: how pricing is really built
Searching “commercial loan rates today” returns tables that mislead by design, because commercial real estate money isn’t priced off a menu — it’s priced off the deal. Lenders start from a market index and add a spread, and that spread moves with the dials the underwriting section above describes: the property type and its income durability, the debt-service coverage the rent actually supports, the leverage you’re asking for, the sponsor’s strength, and whether the loan is recourse. Two borrowers on the same street, same week, can price a full tier apart — correctly. So the honest answer to “what are commercial rates?” is: scenario-priced, moving with markets, and set by each lender — which is why we quote deals, not averages. The productive first step is running your numbers through the commercial loan calculator to see what payments look like across structures, then letting us price the actual file across the lender menu.
The SBA-backed paths: 504 and 7(a)
For businesses buying the building they operate in, two government-guaranteed routes sit alongside conventional commercial lending. The SBA 504 pairs a conventional first mortgage with a CDC-issued, SBA-backed second — a structure built to deliver smaller down payments and long fixed-rate terms on owner-occupied real estate. The SBA 7(a) is the broader guarantee program, usable for real estate among other business purposes. The defining gate for both, per SBA’s rules: the property must be owner-occupied by the operating business — generally majority occupancy for existing buildings — which is why SBA paths and pure investment property don’t mix; investors hold the DSCR and conventional-commercial lanes instead.
When SBA wins: an operating business, real occupancy, appetite for less cash in and longer fixed terms — the trade being more process and the programs’ eligibility rules. When conventional wins: speed, investment or mixed intent, or files outside SBA’s framework. Program terms and credit decisions belong to SBA and its participating lenders and change with their rules; our role as a broker is matching the file — entity structure included (see the LLC guide), and international ownership where it applies — to the lane that actually fits it.
How to get a commercial loan: preparing a strong request
Commercial lenders fund clarity. The strongest requests arrive with the property’s story already told: current operating statements and a clean rent roll, the leases behind them, a realistic budget for any planned improvements, the entity’s documents, and a concise summary of who you are as an operator — what you own, what you have executed, and how this deal fits. Sponsors who can explain the exit as clearly as the purchase consistently get better answers.
It also pays to match the property to the right lending lane. Smaller residential-style investments — a rented single-family home or a modest multifamily building — often fit rental property financing or DSCR programs rather than full commercial underwriting, and multifamily financing sits on a spectrum between the two worlds. Bringing a small deal to a heavy commercial process, or a large one to a residential program, costs time either way. This matching — deal to lender, structure to plan — is precisely where a broker who works across many capital sources earns their place, and our business-purpose lending overview maps the wider landscape.
One compliance note worth understanding as a borrower: commercial and other business-purpose loans on non-owner-occupied property are not consumer credit, and the consumer protections built around home loans may not apply. Terms live in the documents you sign. Read them, ask about anything unclear — especially prepayment and recourse — and treat the negotiation with the seriousness the structure deserves.
Frequently asked questions
What counts as a commercial mortgage?
How is commercial underwriting different from residential?
What is a balloon structure?
Are commercial loans consumer credit?
What are typical commercial loan interest rates?
There is no honest single number: commercial real estate pricing is built per deal from a market index plus a spread that moves with property type, debt-service coverage, leverage, sponsor strength, and recourse — and it changes with markets. Published “today’s rate” tables are marketing, not quotes. Run scenarios in the commercial loan calculator, then have the actual deal priced across lenders.
How much is the down payment on a commercial loan?
Commercial lending is meaningful-equity lending — expect a substantially larger equity contribution than residential, with the exact requirement set by each lender and shaped by the property, its income, and the rest of the file. The SBA-backed owner-occupied paths exist partly to reduce the cash-in for operating businesses; program rules govern there.
Can I get a commercial loan with no money down?
Genuine zero-down commercial mortgages are not a real market product. Pitches promising them usually involve seller financing, cross-collateral, or partner equity — structures with their own risks that deserve advice, not a leap. Real equity in the deal is structural to commercial credit; plan for it.
Can I refinance an existing commercial mortgage?
Yes — rate-and-term and cash-out refinancing are everyday commercial work: repositioning maturing balloons, resetting leverage after value growth, or pulling equity for the next acquisition. The same underwriting dials apply, and maturities are best worked well ahead of the balloon date, not at it.