Discover the difference between a good transaction experience and a great one.

What do top lending institutions, investment funds, developers, and commercial property owners want from their commercial real estate law firm? Experience they can count on and client service that doesn’t stop at the office door.

That’s what you get at Cassin.

Transactions closed per year
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Manage high-volume deal flow while maintaining exceptional client service.

In total transaction value per year
$ 0 B+

Guide deals from conception to closing with a focus on execution, efficiency, and results.

Attorneys closing transactions throughout the U.S.
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National reach, deep industry experience, and the personalized service of a boutique law firm.

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Who we are

Cassin & Cassin LLP, your trusted legal partner in commercial
real estate transactions for over 40 years.

Founded in 1986 by Joseph M. Cassin in New York City, Cassin now has more
than 30 attorneys in New York City, Westchester County (Purchase), NY, and Phoenix, AZ. 

As an established name within the real estate industry, our attorneys bring decades of sophisticated experience representing a wide range of leading industry participants, including:

Additionally, Cassin provides personalized general corporate counselling, as well as representation for private foundations and individual private clients in residential real estate transactions, estate planning, administration, and related matters.

Practical, tailored solutions

Clients choose Cassin not only for our legal expertise, but also for the way we work. We combine the depth, experience, and sophistication of a large national real estate practice with the responsiveness and client-focused commitment of a boutique firm. 

Our partners remain highly engaged and directly accessible, and our teams are structured to deliver efficient, practical solutions tailored to each client’s objectives. Whether navigating a complex financing transaction or negotiating a lease, we provide the insight, responsiveness, and partnership our clients need to move forward with confidence.

An approach built on integrity, respect, and collaboration

As we look to the future, Cassin remains committed to evolving and aligning with our clients’ needs, ensuring we remain the long-term partner they can rely on. However, our core values will remain constant: integrity, respect, collaboration, and an unwavering commitment to client success. 

These principles shape not only how we serve our clients, but also how we operate as a firm. We cultivate a supportive firm culture that nurtures professional growth, collaboration, entrepreneurial thinking, empowering our team to deliver legal excellence. Equally central to our identity is our commitment to the people and places where we live and work. We proudly support organizations that drive meaningful change and strengthen the communities we serve. 

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We handle every aspect of commercial real estate, from complex financings and acquisitions to leasing and dispositions, across New York and throughout the country.

What sets us apart

Cassin is a go-to name in the world of commercial real estate transactions, with a reputation for exceptional work and service that keeps our clients coming back for decades. 

With every engagement, our clients benefit from:

Our firm is similar in size to real estate practices in many national law firms, with comparable depth and talent. We can often deliver even more because of our core focus on transactional commercial real estate.

With longstanding contacts throughout many areas of real estate finance—including the agency, CMBS, private credit, commercial bank, mortgage REIT, and life insurance sectors—and dozens of deals in progress at any given time, we have our finger on the pulse of the U.S. commercial real estate lending market. 

At Cassin, you work directly with our partners who are actively involved in every transaction. They’re not only directly accessible to clients when questions arise, but encourage clients to reach out to them at any time.

We offer our commercial real estate clients and others a full range of personal client services, including sophisticated estate planning, fiduciary representation for estates and trusts, charitable planning, and more.