Mark L. Koehler
Principal

(410) 309-4900 ext 223
(301) 621-8866 ext 223

Mark joined DT&B’s sales team in 1982 and now serves as major projects coordinator.  He has Major System sales and design responsibility for the Territories Major Design Build Contractors.  In addition he has sales and specification responsibility for key lighting designers, architects, and engineers.

Mark is a graduate of the University of Maryland with a BS Degree in Marketing and started his business career with a leading retail supplier of high-end electronic equipment. In 1981 he joined the Commercial Marketing Department of the real estate development firm David Kornblatt Company.

Furthering his career, he became a member of our sales team as an inside sales/quotation specialist. His responsibilities grew to include generation of project quotations, assistance in design and build work as well as providing technical support to the professional specifying community.

Mark has the unique capability and knowledge to cross all One Source disciplines.  On major projects he coordinates the specification and sales across Lighting Control, Supplies, and Lighting, as the design build contractor.  He provides Project Management of Multi-Year Facilities Investments in Building Control Systems for clients such as Valley Health Systems, Truland Corporation (NGA), Smithsonian, and BRAC facilities.

Mark has attained the prestigious and hard earned "Super Rep" status from Lutron.