Can I get an SBA loan on a mixed-use building?

Yes, if your own business occupies at least 51 percent of the total square footage, with the rest leased to residential or other commercial tenants.

Does residential rental income count toward SBA occupancy?

No. Only space occupied by your own business or an affiliate under common control counts toward the 51 percent requirement.

What if my business occupies less than 51 percent of a mixed-use building?

The building does not qualify for SBA financing. A bank or DSCR mixed-use loan would be the alternative.

Is the down payment different for mixed-use SBA loans?

No, the same 10 to 15 percent standard applies as any SBA real estate purchase.

Can I refinance a mixed-use building I already own with SBA?

Yes, if your business occupies 51 percent or more, with cash-out for eligible business expenses possible under 504.

Can I use an SBA loan on a mixed-use building?

By Mark ColwellUpdated September 2026

Yes, you can use an SBA 7(a) or 504 loan on a mixed-use building as long as your own operating business occupies at least 51 percent of the total rentable square footage, with the remaining space leased to residential or other commercial tenants. Down payment typically runs 10 to 15 percent, and the residential portion is treated as incidental income rather than the primary purpose of the loan.

The occupancy math

Space type	Counts toward SBA occupancy?
Your business's commercial space	Yes, counts as occupied
Affiliate business under common control	Yes, counts as occupied
Residential units leased to tenants	No, counts as leased/rented space
Other commercial tenants	No, counts as leased space

Your business needs 51 percent of the total rentable square footage across the whole building, residential and commercial combined, for an existing building; 60 percent rising to 80 percent for new construction.

A worked example

A 6,000 square foot building with 3,600 square feet of ground-floor retail occupied by your own business and 2,400 square feet of upstairs apartments leased to tenants. Your business occupies 60 percent, which clears the 51 percent threshold. The residential rent is additional income that helps cash flow but is not the basis for the loan.

What the lender underwrites

Your business's cash flow covering the new payment by 1.25 or more.
2 to 3 years of business and personal tax returns.
The residential and any other commercial lease income, counted at a discount, usually 75 to 80 percent of gross, to support debt service secondarily.
Appraisal covering the whole building, with income and cost approaches for the commercial and residential portions.
Environmental report on the site.

What disqualifies it

Your business occupies less than 51 percent, which makes the deal ineligible for SBA and moves it to bank or DSCR financing instead.
The building is majority residential rental with your business as a minority tenant.
Your business does not have the tax return history the loan size requires.

Down payment and terms

Typically 10 percent for an established business, 15 percent for a new business, similar to any SBA real estate purchase. 504 is common for larger mixed-use buildings because of the fixed-rate CDC second mortgage; 7(a) works well for smaller purchases or when working capital needs to be included.

Refinancing an existing mixed-use property

If you already own a mixed-use building and your business occupies 51 percent or more, you can refinance existing debt into SBA terms under the same occupancy rule, potentially with cash-out for eligible business expenses under 504.

How CommFi handles it

Our lending desk checks the occupancy math on the floor plan before you apply and structures the file so residential and commercial income both support the underwriting correctly. SBA loans fund through approved lenders, so the desk searches a database of 7,000+ lenders and puts the file in front of the ones active in your industry, and they compete. Zero upfront fees.