Fairfax, VA-based George Mason Mortgage, LLC, has chosen MortgageFlex Systems’ LoanQuest Residential Lending System as its primary technology system As part of MortgageFlex’s LoanQuest lending platform, LoanQuest Residential is a multi-user system used to originate, process, underwrite, close and deliver loans. The system takes loans from pre-qualification all the way to commitment and secondary marketing.