TRG Mortgage Share: Mortgage & Escrow TRG Mortgage Visit Website Request Info 145 S. State College Blvd. Ste. 315 Brea, CA 92821 (714) 989-6803 Facebook Instagram Yelp About About We are a boutique mortgage company located in Brea. We specialize in residential home loans and refinances. We focus on customer service and making sure our clients feel supported during the process.