A storefront on the ground floor and two apartments upstairs. It is one of the oldest building types in American towns, and plenty of investors like it for good reason: two kinds of tenants, two kinds of demand, and often a better price per square foot than a pure residential building nearby.
Financing it is where people get surprised. Many residential loan programs will not touch a building with a business in it, and many commercial lenders do not want a small building with apartments. A DSCR loan can sit in the gap between those two worlds. It qualifies you on the property's income instead of your tax returns, and some programs accept mixed-use buildings as long as the residential side is the main event. This guide explains how a DSCR loan for a mixed-use property is underwritten, how the commercial rent gets counted, and what to gather before you make an offer or start a refinance.
What counts as a mixed-use property
For financing purposes, a mixed-use property is a building that combines residential units with commercial space under one roof and one deed. The classic version is retail or office on the street level with apartments above.
What matters to a lender is the balance. DSCR programs that accept mixed-use buildings typically want the property to be primarily residential. Programs measure that in different ways, and some use more than one test at once:
- The share of total square footage that is residential
- The share of total rent that comes from the residential units
- The number of residential units compared with commercial units
- The total unit count, since many investor programs stop at a small building size
If the commercial side is larger by any of those measures, the building usually moves out of DSCR territory and into commercial lending, with different terms and a different underwriting process. Ask your loan officer which tests the program uses before you get attached to a property, because a building that passes on square footage can still fail on income.
How DSCR math works on a mixed-use building
DSCR stands for debt service coverage ratio. The lender divides the property's monthly qualifying rent by its full monthly housing cost, usually called PITIA: principal, interest, property taxes, insurance, and any association dues. A ratio of 1.00 means the rent covers the payment exactly. Above 1.00, the rent covers it with room to spare.
On a mixed-use building, the hard part is the numerator. Residential rent is the predictable side, since comparable apartments are plentiful. Lenders treat commercial rent with more caution.
A worked example, with round made-up numbers you can swap for your own:
| Amount | |
|---|---|
| Two apartments, $1,400 each | $2,800 |
| Ground-floor retail lease | $2,200 |
| Total scheduled rent | $5,000 |
| Monthly PITIA | $3,900 |
| DSCR on full rent | 1.28 |
That looks comfortable. Now suppose the program counts the commercial lease at a discount, or caps how much commercial income can be used, so only $1,500 of the retail rent qualifies:
| Amount | |
|---|---|
| Residential rent | $2,800 |
| Qualifying commercial rent | $1,500 |
| Qualifying total | $4,300 |
| Monthly PITIA | $3,900 |
| DSCR on qualifying rent | 1.10 |
The building and the tenants did not change, but the ratio dropped from 1.28 to 1.10. Smart people miss this every day, because the program guide rarely says up front that a commercial dollar counts for less than a residential one. Before you rely on a ratio, ask how the program treats commercial income.
Why commercial rent gets a haircut
Lenders discount commercial rent because storefronts and offices carry risks that apartments do not:
- Vacancies tend to last longer, because fewer tenants are shopping for any given storefront
- Re-leasing often requires build-out money or months of free rent to attract a new business
- A single commercial tenant can be a large share of the building's income, so one move-out hurts more
- The tenant's own business health affects whether rent keeps arriving
An empty apartment often re-rents within weeks; a vacant storefront can sit for months. The discount, cap, or separate vacancy factor that many programs apply is how the lender prices that risk.
What the lender will want to see
Lenders ask for more paper on a mixed-use file than on a single-family DSCR loan. If you gather it first, you shorten the process and avoid paying for an appraisal on a deal that was never going to fit.
Commercial leases
Expect the lender to read every commercial lease, not just a rent roll. They will look at:
- Remaining term, since a lease ending a few months after closing is treated differently from one with years left
- Rent amount and any scheduled increases
- Who pays what, such as taxes, insurance, utilities, and maintenance
- Renewal options and any early termination rights the tenant holds
- Whether the tenant is current on rent
If you are buying, ask the seller for tenant estoppel letters. An estoppel is a signed statement from the tenant confirming the rent, the lease term, and that no side deals exist. It protects you from learning after closing that the tenant has a different deal than the lease shows.
Residential leases and market rent
For the apartments, lenders typically use the lower of the actual lease rent or the appraiser's estimate of market rent, the same way they would on any residential DSCR loan. If a unit is vacant, market rent from the appraisal usually fills in.
Zoning confirmation
A mixed-use building has to be legally allowed to be mixed-use. Lenders generally want the appraisal or a zoning letter to confirm the current use is permitted, or that it is legal nonconforming, meaning it was legal when established and has been allowed to continue. Ask what happens if the building were damaged: some local rules limit rebuilding a nonconforming use, and that can affect both the lender's view and your insurance.
An appraisal that handles both sides
Mixed-use appraisals need an appraiser who can value residential and commercial space together. That can mean a longer turnaround and a higher fee than a standard rental appraisal. The appraiser will usually look for comparable mixed-use sales, which can be scarce in some markets. A thin set of comparables is one of the most common reasons a mixed-use value comes in lower than the purchase price.
Insurance, accessibility, and environmental questions
Insurance on a mixed-use building usually needs to cover the residential units, the commercial space, and liability for the business side. The premium can run higher than a comparable all-residential building, especially if the commercial tenant is a restaurant or anything with cooking or open flame. Because insurance sits inside PITIA, a higher premium lowers your DSCR directly. Get a real quote before you finalize your numbers.
Accessibility rules apply to the commercial space. Under the federal ADA Title III regulations, both the landlord who owns a building and the tenant who operates a business open to the public in it are treated as covered parties. A lease can divide who handles which improvements, but that split only binds the landlord and tenant to each other. If the storefront has a step at the entrance or a narrow restroom, factor in what fixing it might cost.
Environmental history matters more on mixed-use than on pure residential property. If the commercial space ever housed a dry cleaner, a gas station, or an auto repair shop, some programs will ask for an environmental review before closing. It is worth asking the seller about past tenants early.
The tax side: the 80% line
Mixed-use investors should know one federal tax rule before they buy, because it can change how quickly the building depreciates. According to IRS Publication 946, a building counts as residential rental property if 80% or more of its gross rental income for the tax year comes from dwelling units. Residential rental property is depreciated over 27.5 years. A building that falls below that line is generally treated as nonresidential real property, which is depreciated over 39 years.
In the worked example above, the apartments produce $2,800 of $5,000 in monthly rent, or 56%. That building would fall under the 39-year schedule, which means smaller annual depreciation deductions than the same purchase price on an all-residential building. IRS Publication 527 covers how rental income and expenses are reported more broadly. This is general education, not tax advice, so run your own numbers with a tax professional before you assume a depreciation figure.
Buying versus refinancing a mixed-use property
The underwriting is similar either way, but the pressure points differ.
As a buyer, your risk is the unknowns. You may not have seen every lease, the tenants are strangers, and the appraisal is untested. Build time into your contract for the lease review, estoppels, the zoning check, and the insurance quote.
As a refinancer, you have history, and lenders like history. A commercial tenant who has paid on time for several years with a long lease remaining is a much stronger file than a brand-new tenant. Before you apply, update your rent roll, gather current leases and any amendments, and pull records showing rent received. If a commercial lease is close to expiring, it often makes sense to negotiate the renewal before you refinance rather than after, since a fresh multi-year lease can change how much of that rent counts.
A cash-out refinance on a mixed-use building is possible with many programs, though maximum loan-to-value is often lower than on a comparable residential rental. Think about the whole picture: the new payment, closing costs, any prepayment penalty on the new loan, and how long you plan to hold. Make sure the building still covers its own payment with room to spare after the cash comes out.
Questions to ask before you apply
Bring these to your first call:
- What percentage of the building must be residential, and is that measured by square footage, income, unit count, or all three?
- How is commercial rent counted, and is there a cap or a vacancy factor?
- What is the maximum loan-to-value for mixed-use compared with an all-residential rental?
- Does the program require a minimum remaining term on commercial leases?
- Which tenant types are excluded, and will an environmental review be needed?
- What reserves will be required after closing?
When a DSCR loan is the right fit, and when it is not
A DSCR loan for a mixed-use property tends to work well when the building is mostly residential, the commercial tenant is stable with a solid lease, the rent covers the full payment with room to spare, and you would rather not have your personal income drive the approval. It suits investors whose tax returns show modest income after depreciation.
It is a weaker fit when the commercial side is the majority, when the building depends on one business that could leave, or when the commercial lease expires soon after closing. In those cases a commercial loan, or waiting until a lease is renewed, may be the better path.
Talk it through with GoodLoan
Mixed-use buildings are rarely a yes or no question on day one. The answer usually depends on the leases, the zoning, and how the commercial rent is counted. A GoodLoan loan officer can look at your rent roll and leases, run the DSCR math with realistic insurance and qualifying rent, and give you a straight answer on whether the building fits a DSCR program before you pay for an appraisal. We say no when a deal does not fit, because that saves you money too. GoodLoan is licensed through the NMLS. If you are looking at a mixed-use property, or want to refinance one you already own, a short conversation with one of our loan officers is a low-pressure first step.
Frequently asked questions
Can I get a DSCR loan on a mixed-use property?
Often, yes, as long as the building is primarily residential. Programs that accept mixed-use properties typically set limits on the commercial share of square footage, income, or unit count. Buildings that are mostly commercial usually need a commercial loan instead.
Does commercial rent count toward my DSCR?
Usually, but not always at full value. Many programs discount commercial rent, cap how much of it can be used, or apply a vacancy factor, because commercial space can take longer to re-lease. Ask how the program counts it before you rely on a ratio.
Do I need an estoppel letter from the commercial tenant?
Some lenders require one, and it is a sensible step for any buyer. An estoppel is the tenant's signed confirmation of the rent, the lease term, and that no side agreements exist.
Is a mixed-use building depreciated over 27.5 or 39 years?
Under IRS rules, a building is residential rental property if 80% or more of its gross rental income comes from dwelling units, which uses a 27.5-year schedule. Below that, it is generally nonresidential real property on a 39-year schedule. Confirm with a tax professional.
Can I do a cash-out refinance on a mixed-use property with a DSCR loan?
Many programs allow it, though the maximum loan-to-value is often lower than on an all-residential rental. Lenders will review current leases, rent history, and the appraisal, and the post-refinance payment still has to be covered by qualifying rent.
Will the appraisal cost more on a mixed-use building?
It often does. The appraiser has to value both the residential and commercial space and find comparable mixed-use sales, which can take longer and cost more than a standard rental appraisal.
