Cash-out seasoning
There are two different clocks to watch: how long the existing first mortgage has existed and how long the borrower has owned or held title to the property.
Fannie first-lien seasoning
If an existing first mortgage is being paid off through a Fannie cash-out refinance, the first mortgage generally must be at least 12 months old, measured note date to note date.
Fannie ownership
At least one borrower generally must have been on title for at least six months before the new loan's disbursement date, with exceptions for inheritance, legal awards, delayed financing and certain LLC/trust ownership history.
Freddie
Freddie also generally requires at least one borrower to have held title for six months before the new note date, and an existing first lien being paid off generally must satisfy Freddie's 12-month seasoning requirement, subject to stated exceptions.
Official guide baseline
Fannie Mae Selling Guide · Freddie Mac Seller/Servicer Guide
Refinance classification matters. A transaction that falls outside limited/no-cash-out rules may become cash-out even when the borrower receives little or no cash personally.