Associated General Contractors of Washington (AGC of Washington) dates back to 1922 -- just four years after the establishment of Associated General Contractors of America (AGCA). This makes the organization the state's largest and oldest commercial-industry trade association.

AGC of Washington began as the Seattle Chapter AGC. In later years, the Tacoma Chapter AGC, the Mountain Pacific Chapter AGC and the Northwest Construction Council eventually merged to form AGC of Washington in 1986. Today, AGC of Washington is a leading chapter among the 96 chapters nationally affiliated with AGC of America, which is headquartered in Alexandria, Virginia.

AGC of Washington has over 600 member firms in the categories of general contractors, specialty contractors and associates, which include suppliers and other construction service providers. AGC of Washington is headquartered in Seattle, at a well-known site on South Lake Union. The AGC-owned property includes an office building, marina and parking facilities. The organization includes district offices in Fife, Bellingham and Yakima, as well as a Legislative office and a Group Retro office in Olympia.

Key dates in the organization's history:

Seattle Chapter, Associated General Contractors of America, is formed for all contractors (later changed to Seattle Northwest Chapter).

Northwest Construction Council formed for subcontractor and associate members.

Heavy/highway contractors break away and form a separate organization not affiliated with AGC of America.

Mountain Pacific Chapter, Associated General Contractors of America, is formed for heavy/highway contractors.

Tacoma Chapter, Associated General Contractors of America, is formed for all contractors in Pierce and Thurston County areas.

Seattle Northwest and Mountain Pacific chapters purchase land on Lake Union and agree to build.

Seattle Northwest and Mountain Pacific chapters merge, forming the Seattle Chapter.

AGC Education Foundation is established.

Seattle Chapter opens a legislative office in Olympia.

Northwest Construction Council is dissolved. Seattle Chapter opens to affiliate memberships.

Seattle and Tacoma chapters consolidate into AGC of Washington. Tacoma facility remains open as a district office.

AGC of Washington opens a district office in Bellingham.

AGC Group Retro is established.

AGC of Washington opens a district office in Yakima.

AGC of Washington celebrates its 75th anniversary.

AGC of Washington through Task Force 21 develops new mission and vision statements.

AGC of Washington adopts a five-year strategic plan.

AGC of Washington adopts new five-year strategic plan.

AGC of Washington adopts new five-year strategic plan.

AGC redefines its mission and vision statements; the AGC Education Foundation celebrates its thirty-year anniversary; the AGC of Washington Safety Team celebrates twenty years of safety excellence and the Tacoma district office relocates to Fife, Washington.

Board of Trustees adds one Future Leaders Forum (FLF) representative to the Board. AGC of Washington develops a new improved website and online database. The website is created to promote construction-industry career awareness, to help connect craft workers and employers, and promote industry training opportunities and programs in Washington State. Emphasis during the year is heavily focused on workforce development and diversity.

AGC of Washington develops its first workforce-development bill, which is approved and signed by the Governor on May 5.  

The Future Leadership Forum (FLF) rebranded and changed its name to Construction Leadership Council (CLC).

AGC introduced a special one-year Introductory membership dues rate to certified DBE/WMBE companies joining AGC of Washington. AGC of America celebrates its 100-year anniversary.