Who We Are
An investment platform run by people who have operated buildings, not just bought them.
Vertex Properties was co-founded by Adam Arnow and Patrick Pavone and is backed by two New York real estate families, the Arnows and the Rosenblatts. We acquire underperforming Manhattan office buildings and transform them into environmentally sustainable, financially successful properties that attract and retain tenants. Olmstead Properties is our exclusive operator and our partner, investing its own capital alongside ours in every building we buy in New York City.
The Principals
Three people, one decision table.
Sellers and brokers deal with the principals directly. We underwrite in-house, we move quickly, and the sponsorship puts significant equity into every deal we do — at least 10 percent of the capitalization, and typically well in excess of 20 percent.
Adam A. Arnow
Adam co-founded Vertex and leads its acquisitions. Since 2005 he has managed real estate transactions valued in excess of $1.5 billion on behalf of the Arnow family and several other high-net-worth families, alongside institutional partners including J.P. Morgan and Oaktree Capital Management. He began his career with seven years running acquisitions at Olmstead Properties — the firm that is now Vertex’s exclusive operator — before moving in 2012 to investing directly on his family’s account across the northeastern United States and Ireland.
Adam’s family has been in the New York real estate business since the 1930s. The Arnow family has developed more than 10 million square feet of office and residential property across the United States, primarily in New York City, including the Grace Building, 1411 Broadway, 711 Third Avenue, 437 Madison Avenue, 7 Hanover Square and 250 Mercer Street. Most of the family portfolio was sold in 1997 to the REIT Trizec Inc.; the family continues to own a portfolio of legacy assets.
Adam’s last New York acquisition before Vertex was in 2016, and stepping back was deliberate — he and Patrick believed Manhattan pricing had moved well past what the fundamentals supported. For the nine years that followed they put capital to work elsewhere: more than a dozen projects in Ireland and multifamily development in the Boston and Pittsburgh markets. The dislocation in Manhattan office values brought them back in November 2025. Since then Adam has led four transactions in eight months — 373 & 381 Park Avenue South, 61 Crosby Street, the recapitalization of 114 Crosby Street, and 19 West 44th Street — representing approximately $460 million of total capitalization. New York is now his sole focus.
Patrick A. Pavone
Patrick co-founded Vertex and works across every stage of a transaction, from sourcing and structuring through asset management. An attorney by training, he was an asset manager at Bank of America Merrill Lynch before joining the Arnow family and Olmstead Properties in 2014. Earlier in his career he served as chief fundraiser and senior advisor to elected officials at the city, state and federal level in New York and Connecticut.
Since 2014, together with Adam, Patrick has overseen the development of more than 700,000 square feet of office property in Dublin; sales of those buildings have generated proceeds in excess of $600 million. He also built a countrywide single-family homebuilding company in Ireland with the capacity, at its peak, to build more than 1,700 homes. Domestically he has acquired more than 1.3 million square feet of Manhattan office — including Vertex’s four recent transactions: 373 & 381 Park Avenue South, 61 Crosby Street, 114 Crosby Street and 19 West 44th Street — along with 350,000 square feet of Illinois industrial now operated by Olmstead as part of its 4.5 million square foot portfolio, and has managed investments in more than 1,000 units of multifamily housing recently completed or under development around Pittsburgh and Boston.
Patrick and Adam made their last New York acquisition in 2016 and then deliberately stood down; they thought the market had become too expensive. The repricing of Manhattan office brought them back in November 2025, and Patrick is now solely focused on New York, where he has led or co-led four transactions in eight months totalling roughly $460 million.
Patrick is an avid competitive sailor and races regularly in regattas up and down the East Coast of the United States, on dinghies and on small and large keelboats.
Samuel W. Rosenblatt
Sam is a partner in Vertex and the President of Olmstead Properties, which owns and manages approximately 4.5 million square feet of commercial office buildings in New York City. He is the fourth generation of his family in the real estate business; the Rosenblatt family has owned and run Olmstead since its founding in 1930.
Prior to Olmstead, Sam spent eight years as Vice President of Newmark & Company Real Estate, where he was responsible for the leasing and management of 16 commercial properties totalling approximately 6 million square feet, followed by two years as Vice President of leasing at Swig, Weiler & Arnow, with responsibility for three buildings containing nearly 2 million square feet.
Sam serves on the board of directors of numerous philanthropic institutions, is an active member of the Real Estate Board of New York, and currently serves as Real Estate Division chair for UJA. He received the Distinguished Service Award from the Young Executive Division of the Israel Bonds Organization. He is a graduate of the Wharton School of the University of Pennsylvania, an avid contemporary art collector, and has run the New York City Marathon.
The Bench
Our consultants.
We bring specialists in from day one — on design, engineering, sustainability, food and beverage, art and childcare — because the differentiation we underwrite has to actually get built.
Bring Us a Deal
If you have a Manhattan office building, we would like to see it.
We look at everything in Manhattan between $50 and $350 million. We move quickly, we underwrite in-house, and we do not retrade. Off-market introductions are welcome and treated in confidence.