Aren't loans on duplexes riskier than loans on houses?
Less than they used to be. Loans made from 2000 to 2014 on two-to-four unit homes fell far behind more often than house loans with the same credit, even when the owner lived there. After Fannie Mae and Freddie Mac required bigger down payments, expected losses came close to those on single houses.
WHAT MOST PEOPLE ARE NEVER TOLD
In August 2026 the FHA's monthly report showed about 11 percent of its loans on two-to-four unit homes behind on payments, against about 14 percent on detached houses. Those rates are not adjusted for credit.
After 2008 the rules got much stricter. For loans made in 2014, an Urban Institute study predicted losses close to those on single houses, and said Fannie Mae and Freddie Mac may have overcorrected. On those loans the better record came with bigger down payments.
The study covered 14 million Fannie Mae and Freddie Mac purchase loans made from 2000 to 2014. Among borrowers with the same credit score, debt and cash down, two-unit homes were 29 percent more likely to fall six months behind than single houses. Three and four unit homes were 23 percent more likely.
The study's explanation for the duplex figure is one you can plan for. In a duplex the other unit is your only rent, so an empty month takes all of it.
Some extra checks apply today. The FHA makes a three or four unit home pass a rent test. Fannie Mae's system asks for six months of payments left over after closing on a two-to-four unit home you live in.
GOOD TO KNOW
Keep cash aside for an empty month, and ask your lender how much your loan wants left after closing. In 2020 and 2021 FHA loans on these homes fell behind more often than on houses, and a larger share was in foreclosure in August 2026.
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WHERE THIS COMES FROM
- Urban Institute, Default and Loss Experience for Two- to Four-Unit Properties (Goodman and Zhu, 2016)
- HUD, FHA Single Family Loan Performance Trends, August 2026, Table 3
- HUD, FHA Single Family Loan Performance Trends, August 2020, Table 3
- HUD Handbook 4000.1, FHA Single Family Housing Policy Handbook (revised August 12, 2026): page 171, the rent test for three and four unit homes
- Fannie Mae Selling Guide B3-4.1-01, Minimum Reserve Requirements (08/07/2024)
Researched and written by Series Homes. Checked against its sources on . Lending rules change. This page is general information, not a loan offer or legal or tax advice.