If a property is re-sold 90 days or fewer following the date of acquisition by the seller, the property is not eligible for a mortgage insured by FHA.

FHA defines the

• seller's date of acquisition as the date of settlement on the seller's purchase of that property, and
• re-sale date as the date of execution of the sales contract by a buyer intending to finance the property with an FHA-insured loan.

Reference: For exceptions to this 90-day restriction, see HUD 4155.2 4.7.h