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Conventional loans · Fannie Mae B2-1.1-01Principal residence, second home or investment property: Fannie Mae's occupancy rules

Fannie Mae finances three occupancy types, each with its own maximum loan-to-value, credit score and pricing. A principal residence is the home the borrower lives in; with several borrowers, only one needs to occupy it and take title. Some buyers count as owner-occupants without living there: an active-duty service member temporarily away on military orders, a parent or legal guardian housing a disabled adult child who cannot work or qualify alone, and an adult child housing a parent who cannot work or qualify alone. A second home must be occupied by the borrower for some portion of the year, be a one-unit dwelling suitable for year-round occupancy, be under the borrower's exclusive control, not be rental property or a timeshare, and not be subject to an agreement giving a management firm control over its occupancy; if the lender finds rental income, the loan can still be a second home only if that income is not used to qualify. An investment property is owned but not occupied by the borrower. Second homes and investment properties must receive a Desktop Underwriter Approve/Eligible recommendation and carry loan-level price adjustments – one reason the occupancy stated on the application must be true.

The three occupancy types

  1. 1. Principal residence

    The borrower lives there; with several borrowers, one occupying borrower on title is enough.

  2. 2. Second home

    One unit, year-round suitable, used by the borrower part of the year, exclusive control, not a rental or timeshare.

  3. 3. Investment property

    Owned but not occupied by the borrower; price adjustments always apply.

Owner-occupant without living there

  1. Military service member

    On active duty, temporarily absent under military orders.

  2. Parent of a disabled adult child

    When the child cannot work or does not have enough income to qualify alone.

  3. Child housing a parent

    When the parent cannot work or does not have enough income to qualify alone.

Second home red flags

  • A rental management agreement that controls who stays in the home.
  • Rental income used to qualify – then it is not a second home.
  • Two or more units, or a property not suitable for year-round living.
  • A timeshare or fractional arrangement.

Questions buyers ask

Can I rent out my second home?

Fannie Mae requires that a second home not be rental property or under a management agreement that controls occupancy; if the lender finds rental income, the loan can stay a second home only if that income is not used to qualify (Selling Guide B2-1.1-01).

Can I buy a house for my parents as a primary residence?

Yes, if the parent is unable to work or does not have enough income to qualify on their own – then the child is treated as the owner-occupant.

Can a second home be a duplex?

No. Fannie Mae second homes are restricted to one-unit dwellings.

When the lender asks the buyer for a letter about how the home will be used, request it in ClosingCode with an upload link in English or Spanish – and see when it arrives.

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Source: Fannie Mae Selling Guide B2-1.1-01, Occupancy Types (10/05/2022), selling-guide.fanniemae.com, read October 25, 2026.

General information about Fannie Mae conventional loans, not legal, tax or financial advice. FHA, VA and USDA have their own occupancy rules. ClosingCode is software; it is not a lender or law firm. This guide is not a substitute for the advice or services of an attorney.