John Hannigan
My Affiliations
Sold/Leased Listings
There are currently no sold or leased listings in our system for this broker.Contact
My Markets
Concentration Areas
Brief Profile
CRE co-founder | 500+ deals | Office, flex, & industrial leasing expert | Client-first negotiator with industry awards in CT/NY region.
Full Profile
John P. Hannigan, Principal | Choyce Peterson, Inc.
Co-founder, leading expert in tenant representation, investment sales, and commercial leasing for Fairfield County, Westchester County & New York tri-state.
The Challenge Clients Face
Executives need insight and advocacy to secure space or maximize value while navigating competitive, complex markets—where experience and collaboration make the difference.
My Approach
John is known for deep market knowledge and a creative, client-first process, from initial strategy through negotiation and transaction. He leads with agility and integrity—earning accolades for understanding client needs and delivering results.
Core Services
- Corporate tenant representation
- Leasing and sales for office, industrial, and flex properties
- Relocations, renewals, expansions, downsizing
Proven Results
Led more than 500 successful transactions. Earned Broker of the Year, Customer Acumen Award, largest Build-to-Suit and flex transactions in the region.
Why Clients Choose John
Clients appreciate John’s proven history, strategic insight, and commitment to each assignment—backed by industry awards and a reputation for exceeding expectations in complex transactions.
Core Competencies
- Office, flex, and industrial leasing
- Tenant representation
- Transaction management
- Investment sales and advisory
- Market analysis and creative strategy
About John P. Hannigan
John co-founded Choyce Peterson drawing on expertise from more than three decades in CRE. He previously worked with Rostenberg-Doern Co., completing landmark deals and exclusive assignments. He is also a recognized industry and community leader, board member, and award winner.
Philosophy
John’s philosophy centers on preparing thoughtfully, executing precisely, and giving back—ensuring every client gains an edge from tailored strategies and stewardship.
Ready to Talk Strategy?
For strategic leasing, sales, or portfolio needs, contact John for a proven, client-first approach and results in Fairfield/Westchester and tri-state markets.
Contact: John P. Hannigan
(203) 961-8175
jhannigan@choycepeterson.com
Choyce Peterson, Inc.
