Arbok

Arbok is a 40,000 sq ft data center addition located at 2721 Charles Martin Hall Rd in Rockdale, Texas. The project, filed under the facility name Building G, involved additions to an existing structure in Milam County. With an estimated cost of $75,057,018, the construction represents a significant investment in private infrastructure within the region.

The filing was registered with TDLR in January 2026. Construction began in November 2025, and the scheduled completion date was May 2026. The TDLR record shows that the agency closed the project file in March 2026. This action marks the end of the accessibility review process for this construction, confirming that the regulatory requirements for the project’s scope have been addressed.

Project Scope and Cost

The work was classified as additions to an existing building, specifically for a data center. The total estimated cost of $75,057,018 translates to approximately $1,876 per square foot. This figure is notably above the county median of $480 per square foot for similar additions to existing buildings in Milam County. The project’s cost also sits in the top quarter compared to other TDLR-registered additions in the area, reflecting the specialized nature of data center construction.

OneFourTwo Architecture, P.C. served as the design firm of record for the project. The registered accessibility specialist was Kam-hung Kenneth Woo. The owner of record is listed as James Harris. The project was privately funded on private land for private use, distinguishing it from publicly funded municipal or state construction projects in the county.

Local Context and Comparisons

The scheduled build window for Arbok was 195 days, which is close to the county median of 211 days for similar projects. While the duration aligns with regional averages, the financial scale and per-square-foot cost are significantly higher than the median estimated cost of $3,075,000 for additions in Milam County. This disparity highlights the unique economic footprint of large-scale data center expansions compared to standard commercial or residential renovations.

The design firm, OneFourTwo Architecture, P.C., has experience with other high-value projects, including the Stulz Building 2 in Denton and various commercial centers in Prosper. These comparable projects, totaling $67,805,000 across other filings, demonstrate the firm’s track record in managing complex, high-cost construction in Texas. The Arbok project in Rockdale continues this pattern of substantial investment in specialized facility upgrades.