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Mark J. Duclos, SIOR, CRE

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CT License: 0755156

MA License: 144437

Mark J. Duclos
SIOR, CRE

President

Sentry Commercial

160 Trumbull St, The Rec Hartford, 4th Floor, Hartford, CT 06103-2406

P:+1.860.983.5630
C:+1.860.983.5630
E:
W:
Market
Hartford
Specialty
Industrial Specialist
Member Since
2003
Chapter
SIOR Connecticut Western Massachusetts Chapter
Areas of Practice
Tenant Representation, Corporate Services, Distribution & Logistics, Sale/Leasing, Consulting, Brokerage Management, Investments, Landlord
Accreditations
SIOR Foundation Board of Directors, Board of Directors, REFA Hartford, Past SIOR Global President, Past SIOR Connecticut Chapter Past President
Mark Duclos, SIOR, CRE, FRICS, is co-founder and President of Sentry Commercial, a Southern New England real estate services firm, based in Hartford CT. He has more than 35 years of experience as an industrial specialist. He has held the SIOR designation for more than 17 years and is a past SIOR Global President.

He started his commercial real estate career in 1986 with developer and owner, Griffin Industrial Realty, and began his brokerage career with The Farley Company, representing industrial companies for their real estate needs. In addition to holding the prestigious SIOR designation, he also holds the Counselors of Real Estate (CRE) designation.

Mark is a licensed broker in Connecticut and Massachusetts. He currently sits on the Hartford Board of the Real Estate Finance Association (REFA) and is a member of the Board of Trustees for American International College.
  • Bachelor of Science, American International College, Springfield MA
  • Licensed broker in Connecticut and Massachusetts
Michael Jeppesen, SIOR, LEED AP
Colliers
Salt Lake City, UT
Jeremy Jensen, SIOR, CCIM
Colliers
Salt Lake City, UT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Sale
$6,600,000
56,640 Sq. Ft.
January 6, 2022 Bloomfield, CT

Arthur Ross, SIOR
Newmark
Avon, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
135,410 Sq. Ft.
November 20, 2018 Windsor, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
135,410 Sq. Ft.
November 20, 2018 WIndsor, CT

Mark represented 1MC Connecticut LLC

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
8,846 Sq. Ft.
October 5, 2018 East Hartford, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
21,200 Sq. Ft.
July 25, 2018 East Granby, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
12,240 Sq. Ft.
July 24, 2018 East Granby, CT

Mark represented 29 Kripes Road Associates LLC

Lawrence Levere, SIOR
Sentry Commercial
Hartford, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Office Sale
$230,000
6,580 Sq. Ft.
December 15, 2017 East Hartford, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Sale
$475,000
8,400 Sq. Ft. / 1 Acres
November 24, 2017 South Windsor, CT

Lawrence Levere, SIOR
Sentry Commercial
Hartford, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Office Lease
$337,500
2,250 Sq. Ft.
November 21, 2017 Simsbury, CT

Lawrence represented Coldwell Banker Residential Brokerage

Mark represented Coldwell Banker Residential Brokerage

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Industrial Sale
$650,000
71,655 Sq. Ft. / 4 Acres
September 12, 2017 East Hartford, CT

Mark represented New Boston EH LLC

Arthur represented New Boston EH LLC

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Sale
$3,879,680
65,691 Sq. Ft. / 8 Acres
September 6, 2017 East Granby, CT

Mark represented Airport Business Center III LP

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Sale
$1,280,000
52,000 Sq. Ft. / 6 Acres
August 31, 2017 Vernon, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
$120,416
8,846 Sq. Ft. / 6 Acres
August 7, 2017 East Hartford, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
$405,000
30,000 Sq. Ft.
July 20, 2017 Manchester, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
$185,955
9,900 Sq. Ft.
July 12, 2017 Manchester, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Land Sale
$1,225,000
49 Acres
June 8, 2017 Bloomfield, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Sale
$975,000
19,098 Sq. Ft. / 4 Acres
May 23, 2017 Bloomfield, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Industrial Sale
$1,610,000
71,619 Sq. Ft. / 311 Acres
May 17, 2017 East Hartford, CT

Thomas Lescalleet
Indus Realty Trust
Bloomfield, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
41,632 Sq. Ft. / 482 Acres
November 30, 2016 East Granby, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
14,600 Sq. Ft. / 2 Acres
September 28, 2016 New Britain, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Industrial Lease
$2,253,383
54,426 Sq. Ft. / 10 Acres
February 1, 2016 Waterbury, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Other Sale
$14,615,000
56,936 Sq. Ft. / 14 Acres
December 1, 2015 Rocky Hill, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
$208,800
8,000 Sq. Ft. / 6 Acres
July 31, 2015 Vernon, CT

Robert Schneiderman
Parallel Asset Management
Cold Spring, NY
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
$258,750
17,250 Sq. Ft. / 8 Acres
July 17, 2015 East Granby, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Robert Steinhart
Colliers
Philadelphia, PA
Industrial Lease
32,600 Sq. Ft. / 3 Acres
May 14, 2015 Rocky Hill, CT

Frank Hird, SIOR
O,R&L Commercial
Branford, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Other Sale
$992,000
4,564 Sq. Ft. / 22 Acres
April 9, 2015 Guilford, CT

Arthur Ross, SIOR
Newmark
Avon, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Office Lease
12,127 Sq. Ft. / 10 Acres
January 30, 2015 Waterbury, CT

Arthur represented T & A Products, Inc.

Mark represented T & A Products, Inc.

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Industrial Lease
$154,224
48,960 Sq. Ft.
October 21, 2014 Agawam, MA

Mark represented Vaupell Holdings, Inc.

Arthur represented Simmons Manufacturing Company, LLC

Arthur Ross, SIOR
Newmark
Avon, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
$1,724,178
40,200 Sq. Ft.
September 26, 2014 Newington, CT

Arthur represented Schuco USA LLP

Mark represented Schuco USA LLP

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Lance Ross, SIOR
Ross Property Advisors
Scottsdale, AZ
Office Lease
1,586 Sq. Ft.
April 2, 2014 Phoenix, AZ

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Industrial Lease
111,443 Sq. Ft. / 7 Acres
February 28, 2014 East Hartford, CT

Mark represented W.E 115 Park LLC

Arthur represented W.E 115 Park LLC

Mark represented Bakery on Main

Arthur represented Bakery on Main

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Industrial Lease
46,205 Sq. Ft. / 2 Acres
January 29, 2014 Springfield, MA

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Industrial Sale
$2,475,000
53,325 Sq. Ft.
December 18, 2013 East Hartfod, CT

Mark represented New Boston EH LLC

Arthur represented New Boston EH LLC

Arthur Ross, SIOR
Newmark
Avon, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Sale
$2,050,000
125,400 Sq. Ft. / 8 Acres
December 10, 2013 East Longmeadow, MA

Philip Gagnon, SIOR
Colliers
Hartford, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
32,663 Sq. Ft. / 11 Acres
August 16, 2013 Bloomfield, CT

Philip represented 28 Britton Drive, LLC

Mark represented Advance Defense Solutions Technologies, LLC

Kenneth Hulbert
Daum Commercial Real Estate Services
Newport Beach, CA
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Lease
$984,000
July 5, 2012 Rocky Hill, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Arthur Ross, SIOR
Newmark
Avon, CT
Industrial Lease
$2,498,620
February 14, 2012 CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Robert Gaucher, CCIM
O,R&L Commercial
Rocky Hill, CT
Other Sale
$350,000
December 23, 2011 South Winsor, CT

Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Lawrence Levere, SIOR
Sentry Commercial
Hartford, CT
Industrial Lease
$422,194
November 16, 2011 Willingford, CT

Steven Inglese, SIOR
New Haven Group
New Haven, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Sale
$1,150,000
February 3, 2011 Rocky Hill, CT

Steven Inglese, SIOR
New Haven Group
New Haven, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Industrial Sale
$1,450,000
February 3, 2011 Rocky Hill, CT

Steven Inglese, SIOR
New Haven Group
New Haven, CT
Mark Duclos, SIOR, CRE
Sentry Commercial
Hartford, CT
Other Sale
$2,600,000
27,012 Sq. Ft.
February 3, 2011 Rocky Hill, CT

Steven represented DeMeo Family LLC & Verna Development

Mark represented DeMeo Family LLC & Verna Development

SPB - Distribution and Logistics
  • Role :
  • Begin Date : 12/6/2010
  • End Date :
SIOR Foundation Board of Trustees
  • Role : Member
  • Begin Date : 10/19/2022
  • End Date : 10/22/2025
SIOR Foundation Grants & Scholarship
  • Role : Chair
  • Begin Date : 10/10/2023
  • End Date : 10/20/2024
Past Presidents Committee
  • Role : Member
  • Begin Date : 10/1/2022
  • End Date : 9/30/2023
Nominating
  • Role : Chair
  • Begin Date : 10/1/2022
  • End Date : 9/30/2023
Governance
  • Role : Immediate Past President
  • Begin Date : 10/13/2021
  • End Date : 10/18/2022
Nominating
  • Role : Vice Chair
  • Begin Date : 10/13/2021
  • End Date : 10/18/2022
Board of Directors
  • Role : Immediate Past President
  • Begin Date : 10/1/2021
  • End Date : 9/30/2022
Governance
  • Role : President
  • Begin Date : 6/7/2021
  • End Date : 10/13/2021
Board of Directors
  • Role : President
  • Begin Date : 10/1/2020
  • End Date : 9/30/2021
Governance
  • Role : President
  • Begin Date : 10/1/2019
  • End Date : 9/30/2020
Board of Directors
  • Role : President
  • Begin Date : 10/1/2019
  • End Date : 9/30/2020
SPB - Brokerage Management
  • Role :
  • Begin Date : 1/1/2006
  • End Date : 1/1/2020
Member Coalition Council
  • Role : Vice Chair
  • Begin Date : 12/1/2017
  • End Date : 12/31/2019
Governance
  • Role : President-Elect
  • Begin Date : 10/1/2018
  • End Date : 9/30/2019
Board of Directors
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  • Begin Date : 10/1/2018
  • End Date : 9/30/2019
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