Does rental income from a second unit help me qualify for a mortgage?

Rental income from a second unit can count toward qualifying for a mortgage, though a lender typically credits only a portion of that income and wants documentation of a current lease or market rent to support it. The exact treatment depends on the loan program and the specific lender's underwriting guidelines rather than a fixed rule. Joel Boss connects buyers with a lender who can confirm how much of that rental income will actually count.