The construction industry is a difficult environment for a company to differentiate itself from the competition. Most contractors claim “on time and within budget,” so a company has to provide something else to make it stand out among the vast competition to potential clients. For King, relationship is the difference. King has established relationships with clients based on trust and integrity. We have developed the practice of telling clients what they need to know rather than what they want to hear.

The Past…

Douglas L Colonell founded King Construction, Inc. in 1997 after many years of experience working for other respected building companies in Maryland and Washington, DC, Colonell decided to pursue a lifelong dream of owning his own building company. As a young boy Colonell learned the building business following his grandfather around, framing homes during high school and college.  In college Colonell studied engineering and business administration. But building and creating was in Colonell’s bloodline – his great grandfather, a lawyer by trade developed numerous housing and hotel projects throughout the State while building the most respected name in real estate appraising; his grandfather built iconic homes and developed the community of Homeland and Colonell’s tribute to his late young uncle and architect named the company after his nickname “KING” who died suddenly and tragically during a semi pro ice hockey exhibition. Through Colonell’s belief in focusing on being the best and giving clients the level of service and quality that he himself would demand, King is enjoying steady growth over the years. Part of the growth is attributable to Colonell’s aggressive business style and not limiting himself to just one particular segment of the market. As a primary strategy; key staff members have been selected throughout the years that have diverse backgrounds, proven history and experience which strengthens the creative end product.

The Present…

Featuring professional project managers, accountants, seasoned estimators, and support staff, centrally located in Baltimore, Maryland. King services all of Maryland, Delaware, Virginia, Pennsylvania and Washington D.C. King has branched out over the years and included work in New York, Connecticut and North Carolina. At some future point Colonell hopes to add a satellite branch office in the State of Florida.

King has successfully completed many projects including base building construction, interior fit-out, retrofit/remodeling, base building renovations, retail & restaurant construction. Staff members are supported by state of the art information and communication technology.

King’s project control systems, coupled with a genuine commitment to team work and diligent attention to detail, have been recognized time and again as the key to delivering successful projects for our clients. King has a strong commitment to the strict scheduling of its work and employs the use of MS Project, Primavera and Sure Track programs to suit the unique provisions of the work.

Our Partners


Our Clients

  • 7-Eleven
  • Aberdeen Proving Ground Federal Credit Union
  • Aerotek
  • Amerada Hess
  • Anne Arundel Schools
  • Beezer Homes
  • Best Buy
  • Bon-Ton Department Stores
  • Chipotle Mexican Grill
  • CNA Insurance
  • Coastal Hospice
  • Coldwell Banker
  • Colliers International
  • The Cordish Companies
  • COPT
  • Dairy Queen
  • Department of Agriculture
  • Department of the Interior
  • Dollar Stores
  • Eckerd Drug Stores
  • Emory Properties
  • Enterprise Rent-A-Car
  • Fireman’s Fund Insurance
  • Gateway Computers
  • General Growth Properties
  • Genesis Healthcare
  • Hale Properties
  • HSBC Bank
  • Johns Hopkins University
  • LaSalle (now JLL)
  • Liberty Property
  • Maryland State Highway Administration
  • Mavis Tire
  • McCormick
  • MedExpress
  • Mercantile Bank
  • National Tire & Battery
  • NET 2000
  • Nextel/Sprint/Cell One/AT&T/Winstar/Ericsson/Mid Atlantic Tower
  • Noodles & Co.
  • Popeyes
  • Red Robin
  • Salisbury University & University of MD
  • Sears/Kmart
  • Seasons Pizza
  • Selective Insurance
  • Simon Properties
  • Small Business Administration
  • Sylvan Learning
  • Town of Easton, MD
  • United Concordia
  • United Parcel Service
  • Verizon
  • Volvo
  • WB Doner Advertising
  • Weinberg & Green PA
  • WMET Radio