American Marketing Systems, also known as AMSI, is a full-service real estate brokerage firm headquartered in San Francisco. AMSI has developed various models for corporate relocation, vacation housing and investment property management. The firm employs skilled leasing and sales agents and an experienced property management team. Established in 1970, American Marketing Systems also provides services for renters seeking furnished and unfurnished rentals in prime locations throughout the United States. The firm also has offices in Oakland, Calif., New York City, San Diego and Maui, Hawaii. Additionally, AMSI has been honored for innovation and business achievement by the Better Business Bureau, San Francisco Chamber of Commerce, U.S. Small Business Administration, California State Senate and the San Francisco Examiner s Bay Area s Best.