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A proponent of new urbanism, Greythorne Development focuses on mixed-use transit orientated and infill development projects in the Northern New Jersey and Philadelphia areas.  

Greythorne brings outside-the-box thinking, a creative vision and a passion for transforming outmoded buildings and underutilized infill sites into vibrant developments that enhance and transform their surroundings and neighborhood.

Greythorne Development was founded by Michael Koep a real estate executive with expertise in development, asset management, and construction—gained through 20 years’ experience on a broad variety of high-profile projects across multiple asset classes including multifamily, industrial, retail, and office.   

Prior to starting Greythorne Development, Mr. Koep was a principal and director of asset management at Onex Real Estate Partners. He was responsible for managing Onex’s real estate portfolio and development pipeline.  While at Onex Mr. Koep oversaw the development of Sky View Parc/Center, a $900 million mixed-use development including 800,000 square feet of retail and 448 condominium units in three residential towers.  Additionally, Mr. Koep oversaw the joint venture development of three multi-family residential communities totaling 1,069 units.

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