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About Us

David Gartland

Shannon Underwood


Sean Underwood

Underwood Gartland Development is a full service commercial development company building primarily in the King County and Snohomish County industrial markets. Since its inception in 1993, the company has brought over 1,500,000 square feet of industrial and office space to the market--all fully leased or sold. The company's principals are M. Shannon Underwood, a former real estate transactional attorney with extensive commercial development and property management background and David J. Gartland, a professional engineer with a Master's of Science in Taxation. Team member Sean J. Underwood has a degree from the University of Washington Foster School of Business and from the University of Washington's Masters program in Real Estate. Sean focuses on land acquisition of new property for future industrial development.

The principals directly perform or supervise every aspect of the development process from the genesis of a development need to stabilization of the completed project. Services provided include feasibility studies, budget analysis, market analysis, arrangement of construction financing, civil, structural, and architectural plan review, project permitting, legal, title, and tax work, construction management, budget and project management, permanent financing and leasing management.

All three partners are active members of NAIOP, the Commercial Development Association.  Shannon is a past President of the 1,000+ Washington State NAIOP chapter and a past member of its National Board of Directors. Sean chairs the developing leaders committe and runs the NAIOP mentorship program. Shannon is Chair to the Advisory Board for University of Washington Runstad Center for Real Estate Studies and is a Past Commodore of Meydenbauer Bay Yacht Club. 

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