Who owns guild mortgage? Guild Mortgage was founded in San Diego in 1960 by Martin Gleich. Guild became experts in government backed loans for first time homebuyers. At first, Guild provided loans only to purchasers of homes built by American Housing Guild.What is a guild mortgage? The Guild Mortgage Company is a California-based mortgager. They offer FHA loans, mortgage loans, refinancing, and other programs. Guild Mortgage reviews vary widely online. This is to be expected from any mortgage company.Where is guild mortgage headquarters? Guild Mortgage Corporate Office Headquarters HQ. 9160 Gramercy Dr. San Diego, CA 92123-4020 USA. Corporate Phone Number: 1-858-560-6330.