Does roommate rent count when the lender adds up my income?

Question

The Fannie Mae change that lets you count ADU rent toward qualifying income on a one-unit house, up to 30 percent, has me confused. My plan was a three bedroom single family where I rent out the two spare rooms, and I assumed that was the same situation from a lender's point of view since it's rent coming into a one-unit house I live in. A loan officer I talked to said no and used the word boarder, and I didn't follow the distinction. Is a rented bedroom an ADU or not?

Rena Guide · Accepted Answer

A rented bedroom is not an ADU. An accessory dwelling unit means a second, self-contained dwelling on a one-unit property, with its own kitchen, its own bathroom and normally its own entrance, and whether it's recognized as an ADU depends on your local zoning and permitting, which differ city to city and state to state. A basement with a bedroom and a shared kitchen upstairs is a rented room. In casual conversation people call any rented basement an ADU, and lenders and appraisers use the strict meaning.

So the three categories a lender sees are different. Rent from a two-to-four unit building you occupy is unit rental income, and that's long-standing practice, supported by an appraiser's rent schedule. ADU rent on a one-unit owner-occupied purchase is what the Fannie Mae policy taking full effect in March 2026 addresses, allowing projected ADU rent up to 30 percent of total qualifying income. Boarder income, meaning rent from someone sharing your living space, is treated much more narrowly and usually requires documented history of the person paying you, which a buyer who hasn't moved in yet doesn't have.

Your plan can still work. It just works on the cash flow side rather than the qualifying side, so you'd qualify on your own income and the room rent reduces what the housing payment costs you each month. If you want the income to help you qualify, you're looking either at a duplex or at a house with a legal, permitted second unit. Confirm the current program rules in writing with the lender, since these guidelines get updated.

kevin_lombard · Answer

So the permit history is doing a lot of work here. If the basement was finished by a previous owner with a kitchenette and no permit, does the appraiser just note it as extra living area and the income disappears?

derekj19 · Answer

juniper, from what I understand the appraiser is the one who fills out the rent schedule form, and it's usually an add-on to the appraisal fee, somewhere in the $150 to $300 range depending on the market. Worth asking who orders it, because on some files nobody does and then the income can't be used.

marcus_hale41 · Answer

Even where the income is usable, expect the underwriter to haircut it, commonly 25 percent for vacancy and collection, and to take the lower of the appraiser's market rent and an actual signed lease. Run your qualifying numbers at 75 percent of a conservative rent, not at the number the listing agent quotes you. kestrel, if 30 percent of qualifying income is what makes the deal fit, the deal is tight.

Does roommate rent count when the lender adds up my income?

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