PreApp 1003. Founded in 2015, Houston-based PreApp 1003 was created to fill a growing need for mortgage loan originators to easily and securely prequalify mortgage prospects from the convenience of their mobile devices. Being a cloud-based, text-initiated system, PreApp 1003 helps from the point of referral, to obtaining credit, calculating ratios and funds to close, to issuing closing cost worksheets and conditional pre-qualification letters. It is simply the most efficient way for a Mortgage Loan Originator to pre-qualify a prospective borrower all from a mobile device.