The Grand is an immense, much anticipated mixed-use development project in the Los Angeles neighborhood of Bunker Hill that commenced construction in May 2019. To kick off the project, Los Angeles commercial concrete contractors, The Conco Companies delivered an impressive demonstration of its skills and expertise. For the first of the two towers to be erected for the project, Conco provided the second-largest continuous casting of a foundation in Los Angeles in a mere 15 hours. The project with the top honors in this category and the recipient of Guinness World Record recognition in 2014 was the Wilshire Grand Center, also completed by Conco.

The metrics for the foundation mat pour of this 39-story residential tower designed by Frank Gehry are staggering: 140 skilled Conco employees placed 13,275 cubic yards of concrete at an approximate rate of 1,000 cubic yards per hour. The 39,303 square foot concrete mat varies in thickness from 6 feet to 12 feet and weighs roughly 27,000 tons. Throughout the 15-hour mat pour, eight state-of-the-art concrete pumps worked to pump and place the concrete while 1,348 truck trips to six batch plants were completed.

In addition to the speed of its service delivery and the seamless coordination with multiple stakeholders such as developer Related Companies, the Los Angeles City Council, and the Department of Transportation, Conco also achieved the feat of zero injuries during this first phase of the project. Conco prides itself on prioritizing job site safety, and true to Conco’s focus, despite the dizzying speed of the mat pour, there were no injuries. The experience and expertise behind Conco’s reputation as the top supplier of commercial concrete services – no matter the scale or difficulty of the project – was certainly on full display during this massive mat pour.

The Conco Companies’ mission is to be the best supplier of concrete services in the Western U.S. and to bring expertise and incomparable quality to each project. We continue to upgrade and expand our facilities to better serve the growing market for commercial, educational, parking structures, public works projects, and other development. Contact us to learn more about the services from one of the most trusted concrete contractors in Los Angeles.


Cumulus Tower Project - The Conco Companies

On July 14th, Conco successfully completed over 40,000 square feet of finished slab work for the Cumulus Tower after pouring over 8,000 cubic yards of concrete for the project. This large scale project was first proposed in 2015 and architectural firm Solomon Cordwell Buenz, known for its long history in the residential market, designed this 30-story residential tower. Cumulus Tower will be the first tower in this area of Los Angeles and will be a cornerstone feature of a larger complex that will also include open spaces, offices, and 100,000 square feet of retail, with plans to include a supermarket in the retail space.

Cumulus Tower and the surrounding complex is located in the West Adams neighborhood of Los Angeles and will create 1,210 new apartments. This exciting new development seeks to promote public transit as it provides more housing and retail stores next to new metro rail stations. The Cumulus Tower is located across from the La Cienega / Jefferson station on the Expo light rail line which opened in 2012.

Conco was selected for this large project based on its reputation as the best value in concrete services and its commitment to delivering exceptional quality construction on schedule and budget. This experience was particularly important for the Cumulus Tower as the project requires a fast schedule, that started in June 2018 and will wrap up July 2019. During this timeframe, Conco is providing a range of concrete services including structural concrete forming, structural concrete placement and finishing, pumping, and structural shotcrete services for the project.

The Conco Companies mission is to be the best supplier of concrete services in the Western U.S. and to bring expertise and incomparable quality to each project. We continue to upgrade and expand our facilities to better serve the growing market for commercial, educational, parking structures, public works projects, and other development. Contact us to learn more about services from one of the most trusted shotcrete contractors.

Cumulus Tower Project - The Conco Companies (5)
Cumulus Tower Project - The Conco Companies (4)
Cumulus Tower Project - The Conco Companies (3)
Cumulus Tower Project - The Conco Companies (2)


Conco Pumping is pleased to announce the addition of Gary Brandt to the Southern California team. Effective last February and after 41 years with Conco Pumping in Northern California, Gary has moved south to assist with sales and marketing in the Los Angeles area. Originally from the Orange County area, Gary is returning home and to where his family resides. Gary’s knowledge, experience and work ethic, the attributes that made him successful in Northern California have been immediately put to use in Southern California. Gary will focus on our pump work at LAX, will assist on all Conco projects, continue our relationships with our major customers in the Los Angeles basin and of course search for new opportunities. Doug Marquis, who asked Gary to relocate said “We couldn’t be happier now having Gary work with us on a daily basis. Gary brings a wealth of technical knowledge, a proven track record of results and we just like having him around!” Welcome to the team Gary.


More about the services that Conco offers in Southern Califonia:

Commercial Concrete Contractors

The Conco Companies have been providing the best value on concrete services and products in the greater L.A. area since 1959.  We are honored to be a part of many noteworthy projects such as the Nokia Theatre and were recently awarded work on the historical Los Angeles Hall of Justice.  As prominent commercial concrete contractors, our experience includes parking structures, educational and healthcare buildings, high-rises as well as highway and public sector work.  Read more…


As one of the largest and most respected commercial concrete contractors, we provide a whole range of high-quality concrete services including shotcrete construction to the Los Angeles’ market. Pneumatically placed, shotcrete virtually eliminates the formwork required in traditional cast-in-place concrete, which not only speeds up the process but expands its versatility in both new construction and repairs. It is now used in a vast number of applications including an increasing number of architectural applications; the construction and repair of bridges and dams; ground support such as stabilization, soil nailing, and tunneling; and much more.  Read more…

Concrete Pumping

The Conco Companies offer a wide range of concrete services and operate one of the largest pumping companies in the United States.  To serve the Los Angeles area, we have a pumping facility located in nearby Gardena and another based out of San Bernardino County.  The primary goal of our pumping division is to be a placement specialist, and our equipment provides a wide variety of placing options for not only concrete but also aggregates.  Read more…

Concrete Seismic Retrofit

If your building needs a concrete seismic retrofit, Los Angeles’ go-to contractor is The Conco Companies. We provide cost-effective solutions that meet or exceed Ordinance 183893, which requires seismic retrofitting for non-ductile concrete buildings. Using our extensive expertise, we improve the safety and integrity of your concrete structure as well as strive to preserve the historic or unique design elements of the building. Conco’s extensive portfolio includes several renowned area projects including the 1920s-era L.A. Hall of Justice, the historic Rose Bowl Stadium, and the iconic LA City Hall.  Read more…

Structural Concrete Contractors

To ensure your project gets the best start, it pays to hire one of the top structural concrete contractors in Los Angeles. We have been in business since 1959 and are proud to have had a hand in constructing some of the most notable structures in the area including the awarding-winning LA Federal Court House. Conco also provided a full range of concrete services, including concrete pumping and reinforcement, for the tallest building west of the Mississippi, the Wilshire Grand Center. Our reputation is built on providing world-class concrete services with the ability and resources to handle the most challenging projects.  Read more…


Maizer Ouijdan

For The Conco Companies, “Topping Out” the Wilshire Grand was just the tip of the iceberg. We are proud of our part in constructing the iconic tower that has already transformed the Los Angeles skyline and will play an important role in revitalizing the downtown area. Together with our clients and trade partners, we have not only broken world records but continuously challenged our team to come up with new, innovative solutions, and we look forward to bringing that same work ethic and high standards to future projects.

As a part of our on-going commitment and focus to the Southern California construction market, Maizer Ouijdani has accepted the position of General Manager of our Southern California operations. Rick Parker,former general manager, will now bring his years of experience and extensive knowledge of the industry to focus on field operations in Southern California.

With ten years of experience as a Conco Project Manager, Maizer has a strong background in both structural engineering and construction management. He is intimately familiar with the company’s operations up and down the West Coast and has an exceptional track record and strong work ethic.  In concert with the mission and values of The Conco Companies, Maizer is eager to take the lead and is determined to continue the practice of exceeding our clients’ expectations.

Conco is honored to have earned the trust of our trade partners and clients, and we look forward to building the skylines and neighborhoods of Southern California one project after another. Contact us to learn more about our extensive concrete services.

The Conco Companies is one of the foremost suppliers of concrete services for the Western U.S. We got our start in 1959 in the Bay Area by offering clients the best value on a broad range of concrete services and products. Since that time, we have taken a leading role as a top concrete contractor in each region we serve. We have four regional offices serving California, Oregon, Nevada, Colorado and Washington.

Conco Locations West Coast


The Conco Companies

Conco Headquarters

(800) 695-6799


(800) 347-3407


(866) 347-3407


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(925) 685-6799

5141 Commercial Circle

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13052 Dahlia Street

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