About Me

    Mark S Hannigan

    Real Estate Broker
    "The Affordable Real Estate Marketing Solution"

    Field of Business
    • Sales Management-Residential
    • Existing Homes (Resales)
    • Marketing/Research-Residential
    • Buyer Brokerage


    A realtor since 1999, a Real Estate Broker since 2009.  Realty 123 Inc; Long Island's "Affordable Real Estate Marketing Solution" Offering Low Commission Fees without eliminating crucial market exposure or services.  Our goals are your goals.  We provide complete access and marketing of our listings to assist other brokers and agents in order to help them, help you sell your home at the highest possible price in the least amount of time.