Per Mar Security Services is the largest full-service security solutions provider in the Midwest. For over seven decades, our family has been committed to providing comprehensive security. Per Mar was founded in Davenport, Iowa in 1953 by John and Eleanor Duffy. To this day, Per Mar is still based in Davenport, Iowa, and family-owned and operated. We provide full-service security solutions including home security, commercial security systems, on-site security officers, theft and fraud investigations, pre-employment background checks, and more!