GO|99 North in Tolleson, Arizona has entered construction, with Willmeng Construction leading work on a 1.1 million square foot Class A industrial building for developer GO Industrial. The project rises on a 75 acre site in the Estrella Park neighborhood along the 99th Avenue corridor, a stretch of the West Valley that has become one of metro Phoenix’s most active logistics submarkets. Willmeng broke ground on the facility in mid 2026, positioning it as the largest single building GO Industrial has brought to market. The building sits roughly three minutes from Interstate 10 and less than five miles from the Loop 202 South Mountain Freeway, giving future tenants fast regional access for freight and distribution operations. DLR Group designed the facility, marking its second collaboration with Willmeng and GO Industrial along the same corridor. Specifications point to a building built for large scale logistics users. The warehouse will include 40 foot clear heights, 190 dock high loading doors, four grade level doors, and all concrete truck courts measuring 245 feet. Parking capacity reaches 1,200 auto stalls and 113 trailer spaces, while a perimeter fence with seven rolling gates will secure the property. GO|99 North is being developed on a speculative basis, meaning construction proceeds without a signed tenant, a bet that reflects how tight the market for large format space has become. GO Industrial President Robert Guerena has framed the project as a direct answer to that shortage, noting the corridor’s importance to the firm’s broader West Valley strategy. No public completion date or total construction value has been disclosed for GO|99 North as of this writing, though the scale of the specifications suggests a project comparable in cost to other recent million square foot builds in the region.

Phoenix Industrial Sector Faces a Shortage of Megawarehouse Space

GO|99 North’s ground breaking lands at a moment when Arizona’s industrial market is unusually tight at the top end. Search activity and brokerage reporting indicate that essentially every existing warehouse in the state larger than 1 million square feet has already been leased, leaving prospective tenants with almost no speculative megawarehouse options to choose from. That scarcity is part of why GO Industrial and Willmeng moved forward without a signed tenant in hand, betting that demand from e commerce, manufacturing, and third party logistics users will absorb the space once it delivers. The project also builds directly on a track record in the same corridor. Its predecessor, GO|99 South, was a three building, 1.28 million square foot park that Willmeng completed before it sold in 2023 for $165 million, one of Arizona’s largest industrial property transactions of that year. That sale remains a useful marker for how investors are pricing large scale logistics assets in the West Valley, and GO|99 North’s developers are clearly hoping for a similar outcome. The West Valley’s rise as a logistics hub has coincided with a broader wave of industrial investment across metro Phoenix, much of it tied to the region’s expanding manufacturing base. A short drive to the east, LG Energy Solution’s US$5.5 billion battery manufacturing plant in Queen Creek illustrates the scale of industrial commitment flowing into the region, even as that project has faced its own construction pauses and restarts. Warehouse developers like GO Industrial are positioning projects such as GO|99 North to serve the supply chains that plants of that size will eventually need, reinforcing how tightly linked Arizona’s manufacturing boom and its logistics real estate market have become.

GO|99 North Timeline and What Comes Next

Construction on GO|99 North began in the summer of 2026, with Willmeng Construction serving as general contractor on a build that industry coverage describes as still in its early structural phase. Neither GO Industrial nor Willmeng has published a target delivery date, and the project’s overall construction value has not been made public, consistent with its status as a speculative development rather than a build to suit. What comes next is largely a leasing question. With the Phoenix market’s existing stock of 1 million square foot plus buildings fully leased, GO|99 North’s owners will be watching how quickly e commerce, retail, and logistics tenants commit to the space once shell construction advances far enough to market it seriously. The building’s air conditioning ready infrastructure and expandable 3,600 amp power capacity give it flexibility to court a wide range of users, from parcel distribution to light manufacturing support. If GO|99 North follows the trajectory of GO|99 South, which sold for $165 million shortly after stabilizing, the project could become another benchmark transaction for large format industrial assets in the West Valley. For now, the immediate milestones ahead are the completion of the building shell, progress on site infrastructure, and the start of formal leasing and marketing efforts.

Project Fact Sheet

• Project Name: GO|99 North
• Location: Tolleson, Arizona (Estrella Park neighborhood, 99th Avenue corridor)
• Project Value: Not publicly disclosed
• Client/Owner: GO Industrial
• Main Contractor: Willmeng Construction
• Architect: DLR Group
• Key Components: 1.1 million square foot Class A speculative warehouse, 40 foot clear heights, 190 dock high doors, four grade level doors, 245 foot concrete truck courts
• Parking Capacity: 1,200 auto stalls and 113 trailer spaces
• Procurement Model: Speculative development (built without a pre signed tenant)
• Construction Start: Mid 2026
• Expected Completion: Not publicly disclosed
• Site Size: 75 acres
• Strategic Impact: Addresses a near total shortage of leasable million square foot plus warehouse space in the Phoenix metropolitan market

Project Team

• Client/Owner: GO Industrial
• Main Contractor: Willmeng Construction
• Architect: DLR Group

Frequently Asked Questions

When will GO|99 North be completed? GO Industrial and Willmeng have not publicly disclosed a target completion date for GO|99 North as construction remains in its early phase.

How much does GO|99 North cost? The total construction value of GO|99 North has not been publicly disclosed, consistent with its status as a speculative development.

Who is building GO|99 North? Willmeng Construction is the general contractor on GO|99 North, working for developer GO Industrial with DLR Group serving as architect.

Where is GO|99 North located? GO|99 North sits on 75 acres in Tolleson’s Estrella Park neighborhood along the 99th Avenue corridor in the West Valley of metro Phoenix.

Why was GO|99 North built without a signed tenant? Developers moved forward on a speculative basis because virtually every existing warehouse in Arizona larger than 1 million square feet is already fully leased, leaving little available inventory for large logistics tenants.