MULTIFAMILY ANCILLARY GROUP (MAG) Multifamily Ancillary Group (MAG) was established over a decade ago to fill the need for a comprehensive ancillary service provider with a national scope. We develop ways to supplement your communities’ bottom line with valuable ancillary income by creating additional revenue opportunities for growth…without increasing staffing cost. Our mission is to build the Nation’s premier platform for providing ancillary services that create additional value to your bottom line. To find out how MAG would custom tailor a program to suit your needs, contact us at 1-800-941-5171 or email info@magrev.com