Mixed-Use Property Mortgage 2026: Residential Over Commercial Financing Rules

Mixed-use properties combine residential living space with commercial activity in the same building. A classic example is retail on the ground floor with residential units above. Financing depends entirely on how much of the total floor area is commercial and whether the property is primarily residential in character and use.

Agency Thresholds for Commercial Space

Fannie Mae permits mixed-use financing if the commercial portion does not exceed 25% of the total gross building area, the commercial use is compatible with residential character, and the property is properly zoned for both uses. Properties where commercial space exceeds 25% of total floor area require commercial lending. FHA similarly allows mixed-use properties where the non-residential portion does not exceed 25% of total floor area, with additional requirements that the commercial use cannot impair the residential character of the property.

Appraisal Requirements for Mixed-Use

The appraiser must use forms appropriate for mixed-use properties and analyze both the residential and commercial components. Commercial tenant income from the property is not counted as qualifying income for the residential borrower unless the borrower owns the business operating in the commercial space, in which case it is treated as self-employment income with standard documentation requirements.

What to Check at Application

• ✦Obtain the property survey or floor plan showing commercial and residential square footage
• ✦Verify zoning permits both residential and commercial use
• ✦Confirm your lender accepts mixed-use properties before ordering the appraisal
• ✦Do not count commercial tenant rents as qualifying income without full business income documentation
• ✦For properties above the 25% commercial threshold, pivot to a commercial lender immediately