how long is an appraisal good for ?
Fannie Mae will allow the use of an origination appraisal for a subsequent transaction if the following requirements are met: The subsequent transaction may only be a Limited Cash-Out Refinance. The appraisal report must not be more than 12 months old on the note date of the subsequent transaction. If the appraisal report is greater than 4 months old on the date of the note and mortgage, then an appraisal update is required. See preceding section, Age of Appraisal and Appraisal Update Requirements, for requirements for completing an appraisal update.