A full service Real Estate Brokerage company, Colonial Properties, Inc. of New Haven County, Connecticut, handles all types of Commercial & Investment, and Residential Real Estate transactions including the sale and leasing of retail, industrial, office, and investment properties as well as brokering land and business sales throughout New Haven County and the state of Connecticut. For both Commercial and Residential Property brokerage, no one can service your needs better than Colonial Properties. A family owned and operated firm for over 35 years, we have been meeting the needs of our clients since 1978.