24 CFR §203.678

1. (a)HUD will require that the property be conveyed vacant if the occupant fails to request permission to continue to occupy within the time period specified in § 203.676, or fails to request a conference or to appeal a decision to deny occupied conveyance within the time period specified in § 203.677(a).
2. (b)If the mortgagee has not been notified by HUD, within 45 days of the date of the mortgagee's notification of pending acquisition, that a request for continued occupancy is under consideration, the mortgagee shall convey the property vacant, unless otherwise directed by HUD.