Mark Seiden

Vice President, Property and Asset Management


Mark oversees all day-to-day functions of the firm’s property, construction, and asset management operations. Mark, who has been active in the Long Island Commercial Real Estate and Construction industry for over 40 years, plays a key role in asset repositioning, design, construction, and feasibility analysis on acquisitions.

Prior to his role at Brent Mako, Mark founded LMJ Management and Construction in 1984. While leading LMJ, Mark constructed several million square feet of Industrial product, working alongside Long Island's largest and most innovative businesses. Presently, LMJ is owned and operated by his son, Josh. Mark sits on the board of CN Guidance and Counseling Services.

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Meet Our Team


Jim Kogel

Managing Partner

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Director of Barketing

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Will Kogel

Vice President, Acquisitions and Asset Management

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Eric Kalison

Vice President, Property Operations

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Dana Kearney

Director of Leasing

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Mary Sloman

Property Account Manager

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Anthony Lopez


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Octavio Lemos

Director of Facilities and Field Service

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Jeanette Bosshart

Property Management Administrative Assistant

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Claudia Cositore

General Counsel

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Chris Campbell

Foreman, Senior Mechanic

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Joe Prizzi

Foreman, Senior Mechanic

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Get in touch

Long Island Office

931 B Conklin Street

Farmingdale, New York 11735


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