Century 21 Manley Associates has the power to help you buy or sell your home as part of the largest residential real estate sales organization in the world with more than 6,600 offices and 110,000 real estate professionals in more than 30 countries and territories. That means Century 21 Manley Associates will have the power to help you move across town, across the country or around the world. The Century 21\xAE system offers you and your family real estate assistance in marketing your current property as well as helping you settle in your new location as conveniently and quickly as possible.