Exactly Just How Long Does Underwriting Take—and Can You Speed It? Just how long does underwriting take? Underwriting—the procedure through which lenders verify your assets, and check always your fico scores and tax statements before you can get a true house loan—can simply just just take as low as 2 to 3 times. Typically, though, it can take over a for a loan officer or lender to complete week. Underwriting takes place following the...