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Maria Valanzano | Colliers | Long Island

Maria Valanzano

Vice President

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Professional Summary

With more than 12 years of experience, Maria serves as a Senior Managing Director at Colliers specializing in both Tenant and Landlord representation. She has developed a reputation as an expert negotiator, relationship builder, and advisor to her clients both locally and on a national level.

Maria has negotiated more than 1 million square feet of real estate transactions on behalf of corporations, professional service firms, government contractors, trade associations, and nonprofit organizations. That includes numerous Fortune 100 companies and other notable clients, such as UBS, Tritec, LNR, Alliant Insurance, The Guardian Life Insurance Company of America, Catholic Health Services, FalconStor and many more. Maria has been featured in news articles and publications including the NYREJ, LIBN, and Newsday for her successful transactions. 

In her spare time, Maria enjoys riding her Peloton, going to dinner with friends and spending time with her husband Chris & their dog Rex. They currently reside in Massapequa, NY and make sure to take full advantage of the south shore beaches during the summer. 


CIBS Rising Star Award (2014)

Connect CRE Next Generation Award, Northeast Region Nominee (2022)


Siena College, B.S.- School of Business Marketing & Management

Memberships & Involvements

Maria is a long-term member of Habitat for Humanity, John Thiessen’s Children foundation, and the Brain Aneurysm Society. Maria also serves as one of the team leaders for F.A.N Club, an organization which creates events and socialization for adults living with Down Syndrome.

  • Licensed Real Estate Salesperson – New York
  • Commercial Industrial Brokers Society (CIBS)
  • Long Island Real Estate Group for Women (LIREGW)






Air Charter Service

3PL Consulting

Alliant Insurance

GOS Technical Services

Mark Goldberg Prosthetics

World Discount Telecommunications

Horizon Air Freight

Guardian Life Insurance

Forest Hills Financial Group


Dutch Girl Cleaners

Garden City Sleep Center

Nationwide Court Services

Pelvic Rehabilitation

Tayne Law Group

D3 Capital

Demarco & Nesi, Certified Public Accountants

Gottlieb Contracting

Park Row Partners

Prestige Marketing Ventures

Dermatology & Mohs Surgery
of Long Island, Pllc.

Contour Mortgage

SD Medical Arts

NY Bariatric Group

ENT & Allergy Associates

K Plan Associates

Catholic Health Services

Premium Holistic

United Water

Cranial Technologies

Worldwide Express

Good Egg

Wolters Kluwer

Foley Services

AEN Review Solutions

Healios CBD

Norton Ventures

Chung Ying Physical Therapy


"Maria is a top sales professional with a heart of lion! She is business all the time. Always trying to win accounts and build relationships. She is detail oriented and hard working. She provides a strategic approach to the business model."

--Patrick Kelty, Senior Solutions Specialist from CA Technology

"Maria is a responsive and caring professional and person. It was my honor and privilege to be a client of hers, and I cannot say enough good things about her efforts in communicating with the parties, attorneys, and other stakeholders in our deal. Her energy and positive attitude made a real difference during a very challenging time."

 -- Jacqueline Harounian, Esq., Partner at Wisselman, Harounian & Associates, P.C



Asset Management, Business Space Lease Advisory, Investment Properties, Lease Advisory, Mixed-Use Properties, Transit Oriented Development

Property Type

Healthcare, Industrial, Multifamily, Office

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