Many first-time buyers assume commercial financing works like a residential mortgage with larger numbers. It does not. The underwriting process and loan structures are fundamentally different, and shopping at the wrong institutions can quickly stall your transaction.
Here is how commercial lenders actually evaluate your deal.
Commercial loans focus on the property's income
When you buy a home, the bank underwrites your personal W-2 income, credit score, and personal debt-to-income ratio. While commercial lenders will still evaluate your personal financial statement, their primary focus is whether the property itself generates sufficient income to cover the mortgage payments.
Lenders analyze this using a single metric: the Debt Service Coverage Ratio (DSCR).
The formula is simple: Net Operating Income (NOI) divided by your Annual Debt Service (your annual principal and interest payments).
For example, if an industrial building generates $80,000 in NOI and your proposed mortgage payments total $60,000 annually, the property's DSCR is 1.33x.
Commercial lenders typically require a minimum DSCR of 1.25x to 1.30x. If a property's cash flow falls below this threshold, the lender will decline the loan or require you to increase your down payment to reduce the mortgage size.
Crucially, banks underwrite based on current, in-place income rather than your future pro-forma projections. Even if you plan to double the rents in 12 months, the bank will calculate the DSCR based on what the property earns today. This is why value-add acquisitions often require larger down payments at closing (or alternative forms of financing); the current income is not yet high enough to support a large mortgage.
Typical commercial loan terms
Expect these standard terms when securing commercial financing:
Down Payments: Standard commercial mortgages require 25 to 35 percent down. LTV ratios typically max out at 70 to 75 percent.
Maturity vs. Amortization: Commercial loans often calculate payments based on a 25-year amortization schedule, but the actual loan matures in five or seven years. This means there is a balloon payment at maturity, requiring you to refinance the property or sell it.
Personal Guarantees: For properties in this size range, banks require recourse loans, meaning you must personally guarantee the mortgage. Non-recourse debt is typically reserved for institutional-sized transactions.
Where to secure commercial loans
Do not approach large national institutions like Wells Fargo or Chase for a small commercial property purchase. They are slow to move and often decline small deals.
The ideal lenders for this segment are regional and local community banks. These institutions hold loans on their own balance sheets rather than selling them to secondary markets. They understand local submarkets, make decisions quickly, and offer flexible structures like interest-only periods.
To find these lenders, ask your commercial broker which local banks have closed their most recent transactions. Call those commercial lending officers directly to introduce yourself, discuss your acquisition criteria, and establish a relationship before you place a property under contract.
You can also work with a debt broker or commercial loan broker who will reach out to several lenders at once on your behalf. They can leverage existing relationships with these banks to put your deal in the best light and can often make the process faster than if you went on your own. They do charge a fee of 1 to 2% of the loan value as commission on top of whatever the lender ends up charging though. But for your first few deals I think it’s worth it especially if you don’t have any banking relationships yet.
The Concrete Returns Playbook explains the commercial underwriting process in detail, including how to model DSCR and debt amortization.
Javi