Dollar Tree 10,642 SF Landlord Rep Village in

State Farm 1,140 SF  Landlord Rep Shops at Willow Run 128th and Zuni in Broomfield

LeMistral 4,629 SF (Restaurant) – Tenant Rep The Orchards 5970 S. Holly in Greenwood Village

1528 Wazee Street
Denver, CO 80202
tel (303) 623-0200
fax (303) 454-5400


The Antonoff family has been a cornerstone in the commercial real estate business since 1962. During the first six years of business from their base in Denver, Gary Antonoff and his father Ben Antonoff developed retail and multi-family properties locally and in Boston, Minneapolis, Washington, D.C., Kansas City, Detroit, San Leandro and San Jose. The year 1968 brought the advent of syndication and brokerage, substantially widening the family’s business base and sphere of influence. The family operated as Antonoff & Co. from 1968 through 1990, building and redeveloping neighborhood shopping centers and manufactured housing projects, and working on numerous build-to-suit projects, mostly along the Front Range and in the District of Columbia.

In 1990 Antonoff Miller Properties was formed through the merger of Antonoff & Co. and Beardsley Miller Properties. The merged entity employed more than 200 people and engaged in a full range of commercial real estate activities including development, retail leasing, investment sales, and specialized consulting services to owners and tenants. Gary’s son Doug joined Antonoff Miller in 1991, after having practiced real estate and corporate law at Brownstein Hyatt Farber and Madden for five years. Doug’s addition marked the third generation of the Antonoff family involved in commercial real estate.

Gary Antonoff departed Antonoff Miller in 1991 and formed Antonoff & Co. Brokerage, Inc. with Doug Antonoff and Dr. Jeffrey Hirschfeld, a veteran in the commercial real estate industry. Antonoff & Co. Brokerage, Inc. was created to specialize in providing a wide range of retail brokerage services including tenant and landlord representation and the sale of retail land and investment properties. Doug also continued the Antonoff tradition of real estate development activities at the helm of Saturn Development Corp. There he notably developed a 300-acre manufactured housing community in the northeast Denver metropolitan area.

Antonoff & Co. Brokerage, Inc. offers its clients a team of exceptional, experienced brokers. Doug Antonoff and Jeffrey Hirschfeld each have over 20 years of retail brokerage experience. Steve Sebern and Gene Stone, who both joined the firm in 2005, each brought over 30 years of retail leasing experience. Tom DiGregorio came on board in 2007, adding over another twenty years of experience working with landlords and tenants. Joseph Langran, a veteran tenant representative, joined the brokerage in 2011 to strengthen that side of the business.

When you hire one of our brokers you are hiring more than a century of experience in commercial real estate. Moreover, you are engaging a firm that has a long reputation for integrity and honest dealing. Since we are also a developer and owner/manager of commercial properties, we understand how to create value and how to view transactions from the perspective of our clients.
We are different from most other real estate brokerage firms in that we not only encourage all of our brokers to work as a team, we demand it. It is our belief that teamwork, an open exchange of information and ideas, and collective problem solving fosters a pleasant working environment for our brokers and, more importantly, helps us to best serve our clients. Through three generations of commitment to the retail real estate industry, we have built an incredible base of knowledge, and have established a proven track record of excellence and thoughtful, strategic service to our clients.

Antonoff & Co. Brokerage, Inc. offers you excellent results through integrity, service, knowledge, experience, attention-to-detail, perseverance and tenacity. We welcome the opportunity to compete for your next commercial real estate assignment, whether it be development, leasing, tenant representation, investment sales or land sales.


Broker Profiles

Douglas Antonoff

Doug is a co-founder of Antonoff & Co. Brokerage, Inc., and has been actively involved in the real estate business since 1986. Doug has a wide background in real estate as a real estate broker, developer and as an attorney practicing in real estate and general business. Doug’s experience comes from such companies as Antonoff & Co. Brokerage, Inc., Antonoff Miller Properties, Mile High Retail Associates and Brownstein Hyatt Farber & Madden. Doug is a graduate of Colorado College where he graduated cum laude with a Bachelor of Arts degree in business and economics. He also graduated from Boston College in 1986, cum laude, with Juris Doctor and Masters in Business Administration degrees. Doug is an active member of the boards of directors of the Anti-Defamation League and Jewish Family Services.

Jeffrey Hirschfeld

Jeffrey is also a co-founder of Antonoff & Co. Brokerage, Inc. and brings with him over twenty-five years of varied real estate experience with Antonoff & Co. Brokerage, Inc., Antonoff Miller Properties, Mile High Retail Associates in Denver and, while in graduate school, C. D. Storey Properties in Nashville. Jeffrey has a Doctorate in Human Resource Development and a Masters in Human Development Counseling from Vanderbilt University in addition to his B.A. in Psychology from Colorado College. Jeffrey is an active member of the boards of directors of Net Results and Platte Forum, and is President of the Board of the Design Council Support Group for the Department of Design, Architecture and Graphics of the Denver Art Museum. In addition, Jeffrey has had various leadership roles in the visual arts in Denver with the Denver Art Museum and other arts related organizations and graduated from the Colorado Business Committee for the Arts’ Leadership Arts Program.

Gene Stone
E-Mail: gstone@antonoff.com

Specializing in the leasing and sale of second generation shopping centers in Colorado, Gene Stone has established long term relationships with many owners, has worked on a wide variety of centers ranging from low-end to top-quality anchored and power centers and has represented numerous retail tenants expanding throughout Colorado. He has extensive experience re-tenanting existing retail properties to achieve the optimum tenant mix and enhance the center’s value and has a successful track record of selling these projects after the leasing goals have been achieved. Gene started in the real estate business approximately eighteen years ago. He spent the first ten years acquiring, leasing and selling shopping centers for JHS, Inc., a company which specializes in acquiring and enhancing the value of properties for its account. These properties were located throughout the United States.


Century 21 Plaza

S. Colorado Blvd.

Retail Redevelopment

More Details


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