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Sean Hannigan | Colliers | Boston

Sean Hannigan

Vice President

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Professional Summary

As a broker with the Southwest team at Colliers, I represent a variety of landlords and tenants across all product types, including office, industrial and flex. My clients range from national corporations to small business owners, all of whom rely on me for market knowledge as well as my level headedness, creativity and determination.

Prior to joining Colliers in 2018, I spent my first two years out of college as a member of the leasing and advisory team at NAI Hunneman. This experience, coupled with my Economics and Finance degree from Bentley University, allowed me to develop a strong foundation in the many different facets of commercial real estate.

One of my favorite parts of my job is seeing my clients grow and succeed. Knowing that I play a vital role in deciding where a company calls “home” is extremely rewarding.  

When I am not helping clients with their commercial real estate needs, I enjoy golf, going to concerts and spending time in Maine.


Rookie of The Year Award Recipient in 2016 at NAI Hunneman


Bentley University, BS in Economics and Finance

Memberships & Involvements

  • Licensed MA Real Estate Salesperson
  • American Ireland Fund, Member
  • NAIOP, Member
  • Commercial Broker's Association (CBA), Member
  • Matignon High School - Board of Trustees Member



  • BrightPath
  • State Electric Corporation
  • Kaestle Boos Associates, Inc
  • Aero Global Logistics
  • J. Jill
  • The Flying Locksmiths
  • US Cabinet Depot
  • Simon & Schuster, Inc.


  • Long Point
  • KS Partners
  • Exeter Property Group
  • Paradigm Properties
  • Marcus Partners
  • Berkeley Partners
  • GFI Partners
  • Casey Properties
  • VMD Companies
  • MG2 Group


Service Lines

Landlord Representation, Tenant Representation

Property Type

Industrial, Land, Office

My Team

Featured News

Mar 3, 2021

Colliers Simultaneously Facilitates Sale and Lease of New Office/Warehouse Construction in Myles Standish

Colliers recently announced that it completed a unique assignment resulting in a sale and full-building lease of Turner Brothers’ brand-new construction at 295 Constitution Drive, Taunton.
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Jan 5, 2021

Colliers Facilitates Sale and Prepares Leasing Strategy for Myles Standish Industrial Gem

Leading global commercial real estate services firm Colliers International recently advised the former owner of 50 John Hancock Road, Eagle Drive, LLC, in the sale of its 151,306-square-foot Taunton facility to VMD Companies.
Read More
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