The project
Clark Pacific broke ground on September 3, 2026 on a new prefabrication plant in Coolidge, Arizona, on a site totalling 110 acres at full build-out. Construction is phased, with the final phase targeted for completion by spring 2027, and the company said it would begin manufacturing immediately from a temporary facility while construction continues.
The company said the plant will triple its overall production capacity and is intended to serve the Southwest and Mountain West. Named applications are parking structures, data centres and advanced manufacturing facilities.
A West Sacramento company with a six-decade history
Clark Pacific traces to 1963, when it was founded as Tecon Pacific on a four-acre site in West Sacramento with fifteen employees. James Clark, a structural engineer who had worked as an estimator at Continental Heller, became general manager in the mid-1960s and led the company for decades before his death in 2018; his sons, including current co-chief executive Donald Clark, have since run the family business. The company marked its 50th anniversary in 2013 and today describes itself as a full-service manufacturer of prefabricated architectural and structural concrete systems for data centres, parking structures, student housing and other large commercial buildings.
The Coolidge groundbreaking follows a broader geographic push the company announced in August 2025, when it said it would open new offices in Arizona and Washington state to serve rising prefabrication demand in the Southwest and Pacific Northwest. By spring 2026 the company had also opened offices in Seattle, Boise and Phoenix, expanding beyond its historic California footprint of plants in West Sacramento, Woodland, Fontana, Adelanto and Ontario.
Note what it is not for
Offsite construction is frequently discussed as a housing solution. This investment is not one. The stated end markets — parking decks, data centre shells, industrial plants — are all structures where repetition is high, tolerances are structural rather than architectural, and a single client orders hundreds of identical components.
That is where precast concrete prefabrication has always worked commercially. Housing has proven harder for the same reason it is hard onsite: fragmented buyers, varied local codes, and no single order large enough to keep a plant loaded.
Why the Southwest, and why now
Data centre construction in Arizona and the wider Southwest has been among the most sustained non-residential building activity of the current cycle, and precast structural components travel poorly — heavy elements become uneconomic to truck beyond a few hundred miles. Plant location is therefore dictated by proximity to demand, which is what a Coolidge site between Phoenix and Tucson provides. Clark Pacific's own executives have described the Pacific Northwest, by contrast, as anchored less by data centres than by roughly $40 billion of planned public-sector megaprojects over the next fifteen years, alongside new state energy codes pushing more efficient building envelopes in residential, healthcare and government construction.
Co-chief executive Donald Clark framed the Coolidge expansion in terms of capacity and reduced on-site disruption, and the company positions prefabrication as a response to construction labour shortages and compressed schedules.
Limits of what is known
This article rests on a company press release and Clark Pacific's own published statements. The release does not disclose the Coolidge investment amount, the expected headcount, or the current capacity against which the tripling is measured, so the capacity claim cannot be checked against a public baseline.
The useful signal here is not the plant itself but what it implies about where construction capital is going. A manufacturer committing to triple capacity, and to new offices in five Western cities within about a year, is making a multi-year bet on non-residential demand in specific regions, at a moment when residential permitting in some of the same states has been falling. Those two movements are not contradictory — they are different markets drawing on the same labour and materials base.