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Our Story

Greenwin is one of Canada's largest privately owned residential property management companies. With Green Realty, our in-house retail leasing team, and our development arm, Verdiroc Development Corporation, our expertise ranges from multi-family high- and low-rise buildings to commercial property management. Headquartered in Toronto, our company has a combined staff of 500+ employees. We professionally own and/or manage more than 1,000,000 sq.ft. of commercial space and 15,000 residential units in townhomes and apartment buildings throughout central Canada.

A History of Transforming Skylines

The roots of Greenwin Inc. stretch back to the late 1940s, when the Greenwin Construction Company was first founded by Lipa Green and Arthur Weinstock to build single-family homes in Toronto.

In the early 1950s, Greenwin began residential development in Don Mills - one of Toronto's first suburban satellite communities. From there, we began building multi-unit residential properties. In the 60s and 70s, we built more than 10,000 residential units, including single-family homes, condominiums, rental apartment complexes and affordable housing.

Since 1978, when the late Harold Green created our sister company, Verdiroc Development Corporation, we have transformed Toronto's skyline through our involvement in a wide range of projects, including some of the city's most iconic properties, including midtown's Castle Hill townhomes, The Ports condominiums at Yonge and St. Clair, and Queen's Park Place in the Bay Street corridor.

With its Hospital Consulting Division, Greenwin/Verdiroc have been instrumental in the redevelopment and enhancement of many of Toronto's leading hospitals. These include Mount Sinai Hospital, The Scarborough Hospital, The Princess Margaret, the Wellesley Hospital, and North York General Hospital. 

Together, we continue to change the face of urban Canada, operating on a time-tested foundation of innovation, integrity and hands-on involvement that's rooted in an enduring family heritage.

About Our Founder

Harold Green was one of Canada's greatest builders – a man who dedicated his life to building a better community for his friends, family and many generations to come.

As Chairman of Verdiroc Development Corporation and co-founder of Greenwin, Harold first learned the construction trade as a teenage bricklayer building baking ovens in Toronto with his brothers Sam and Al. From there, he joined Greenwin Construction Company, established by his father, Lipa, and partner Arthur Weinstock. Harold took over its construction division by the early 1950s. Over the next two decades, Greenwin became one of Toronto's largest residential builders and developers. In 1978, with his sons, Eric, Cary and Kevin, Harold started Verdiroc Development Corporation.

Recognized throughout his career as a construction industry innovator, Harold was among the first to embrace the concept of mass-produced housing components. He used this new method in Don Mills, Canada's first master-planned community in the mid-1950s. This same construction principle continues to be used today.

He brought the same passion for innovation to high-rise construction in the 1960s, when he implemented an unprecedented construction system called the "flying form". Forms were used as moulds for concrete and were then assembled and hoisted, level by level, as each floor was poured.

Besides revolutionizing the construction process, Harold also modernized the role of the construction labourer. In co-operation with the labour union, he created "formwork", which required a multi-skilled workforce. This advancement greatly reduced both construction time and costs.

Harold's childhood was influenced by his parents' strong social and political convictions. These ideals were a benchmark of his career. Early on, he recognized the importance of a good relationship between management and labour and the value in fair dealings between the two. In 1967, he founded and was the first President of the Metro Toronto Apartment Builders Association, which forged the first collective agreement between workers, employers and the unions, and established, for the first time, medical, dental and legal aid benefits as well as a pension plan for construction workers.

In 1998, when he was inducted into the Greater Toronto Home Builders' Association Hall of Fame, former union officials paid tribute to his ability to bring order and fairness in times of chaos.


As a home builder and community leader, Harold was well-regarded as a tireless philanthropist who contributed to a myriad of causes in Toronto and around the globe. Although he typically shunned the spotlight for his charity work, he accepted a lifetime achievement award from the Mount Sinai Hospital in 1998. As well, he and his wife Miriam were awarded the Peace Prize from the Canada Israel Children's Centre that same year.

On Thursday November 18, 2004, the Canadian real estate and development industry lost a master builder and humanitarian with the passing of Harold Green. His memory lives on through his wife, Miriam, his children, Eric, Cary, Kevin and Robin, his grandchildren, friends, and Toronto's skyline, which was forever changed by his vision.

As we ourselves are real estate owners, we understand that controlling expenses, maximizing revenue, collecting rents and creating value are critical components to asset management. These concepts are interwoven in both our corporate culture and our policies and procedures. We are the third-part manager for 85% of the properties we manage, and are proud to have established long-term partnerships with our clients and residents, as well as a solid reputation for effective, value-driven management services.