Welcome to Allen Appraisal Service. Our firm provides appraisal service in the DFW Metroplex including: Tarrant, Denton, Dallas, Collin, Parker, Hood, Wise & Johnson counties. State Certified & FHA approved our firm strives for 3 day service as the rule, not the exception. We provide open communication throughout the loan process, immediate follow-up to underwriting requests and a credible opinion of value in a timely manner.