February 17, 2020by The Conco Companies

Boren Tower - The Conco Companies - Seattle Concrete Contractors 4 (1)

Boren Avenue is known for the cultural and pedestrian experience that it brings to Seattle residents and visitors. It is home to Cornish College’s famed Raisbeck Hall on Boren, among other notable historic sites. The challenge for Holland Residential and The Conco Companies, was to design and build a structure that reflects Seattle’s modern skyline without jarring the existing buildings. The result was a design that everyone can agree on.

Holland Residential’s new project, Boren Tower, is underway after receiving unanimous approval of their latest design. The tower replaces three surface-level parking lots totaling 21,600 square feet on the corner of Lenora Street and Boren Avenue. Designed by the Seattle architectural firm, Weber Thompson, the 44-story mixed-use tower will accommodate residential, arts, and office spaces at 2019 Boren Avenue. It also offers below-grade parking for over 360 vehicles.

Residential amenities include both outdoor and indoor space on level 5, atop the tower’s roof, and on the podium level. The south terrace provides a pool deck, cooking/hospitality area, and a full, wrap-around bar. Although floor plans and per-unit square footage are still in the works, upper floors will contain 400 residential units, with four penthouses on level 42 and 43. The entire project will total 643,000 square feet.


The Conco Companies poured a mat slab in January 2020, consisting of a monolithic base mat pour of 5,920cy. with an additional upper mat slab pour of 730cy.  The crew utilized three pumps to pour the concrete. Cadman supplied the readymix, averaging 348 yards per hour for the pour, with a maximum output of 463cy per hour. Conco Reinforcing supplied over 1.5 million pounds of rebar for the mat, installed by RPM.

The Conco Companies is partnering with Holland Residential throughout the planning and execution phases of the project due to our solid working relationship, reliable services, and competitive bids. This is our fourth tower project with Holland. The scope of the work will include concrete pumping, finishing, reinforcement, formwork, trucking, and shotcrete. The project is expected to be completed by August 2021. 

The Conco Companies provides comprehensive concrete services throughout the Western United States. We provide expertise and unsurpassed quality to each project regardless of its size or scope.  We continue to upgrade and expand facilities to better serve the growing market for public works projects, commercial, educational, parking structures, and other construction development.  Allow us to show you how we can assist your next project with our extensive experience and first-rate Denver concrete services.


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Boren Tower - The Conco Companies - Seattle Concrete Contractors 4 (1)
Boren Tower Aerial - The Conco Companies - Seattle Concrete Contractors (1)
Boren Tower - The Conco Companies - Seattle Concrete Contractors (1)
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