Halo Vista, the enormous mixed-use development surrounding Taiwan Semiconductor Manufacturing Co.’s north Phoenix campus, is no longer just a plan on a map. Construction is underway on the first phase of a project expected to reshape the Loop 303 and I-17 growth corridor for years.
Developers Mack Real Estate Group and McCourt Partners held a ceremonial groundbreaking on March 26, 2026. The Arizona Commerce Authority said the initial work centers on horizontal infrastructure and site preparation, with Phoenix-based Willmeng Construction leading that phase.
For West Valley residents, the significance is broader than the city limits. Halo Vista sits immediately beside TSMC and near the Loop 303/I-17 interchange, putting it at the center of the semiconductor-driven employment and development corridor that also affects Peoria, Surprise, Glendale and communities farther west.
A roughly 2,400-acre, $7 billion buildout
Halo Vista’s current project website describes the development as approximately 2,400 acres with an anticipated investment of $7 billion. The developer says about 60% of the site is planned for industrial uses and identifies industrial, office and research, retail, multifamily and mixed-use districts.
City of Phoenix documents provide more detail. A May 2026 City Council report describes the plan as roughly 2,300 acres and says it is expected to include about 12 million square feet of industrial space, 3.5 million square feet of flex-tech and office space, and up to 4 million square feet of destination retail, restaurants, an auto mall, residential, medical and educational uses.
The acreage figures vary slightly between the current developer website and city documents, but both describe a project operating at a scale closer to a new urban district than a conventional business park.
What is expected to come first
The early phase is infrastructure-heavy. Halo Vista’s public timeline identifies roadways, a Carefree Highway expansion, Phase 1 industrial development, Costco and Marriott as early milestones spanning 2026 into 2027.
The project’s industrial districts are aimed directly at the semiconductor ecosystem. Halo Vista markets its Forge districts for advanced manufacturing, research, prototyping and technology users seeking proximity to TSMC. The project also advertises supplier-oriented industrial space intended for companies that need to establish operations near the chipmaker.
That makes the first several years especially important. A large share of Halo Vista’s economic impact will depend not just on building roads and retail, but on whether semiconductor suppliers, research operations and other advanced manufacturers actually commit to the site.
The infrastructure bill is substantial
Phoenix’s May 2026 report says the developer now expects to provide roughly $500 million to $700 million in public infrastructure improvements. The city’s development agreement uses a performance-based structure that can reimburse eligible improvements from transaction privilege tax revenue generated at Halo Vista.
Water and wastewater infrastructure are also major pieces of the buildout. The same city report says the developer committed to provide two million gallons per day of wastewater treatment capacity for Halo Vista’s first phase, with the cost of that commitment established at $180.525 million. Phoenix’s planned North Gateway Advanced Water Treatment Facility is expected to become operational around 2031 or 2032, according to the report.
Those commitments are a reminder that the pace of construction will depend on more than tenant demand. Roads, utilities and treatment capacity have to arrive alongside the private development.
Why the West Valley should pay attention
Halo Vista is technically in north Phoenix, but its location makes it part of the broader West Valley growth story. The site sits where the semiconductor boom, Loop 303 development and north Valley transportation investments increasingly overlap.
If Halo Vista succeeds in attracting a dense cluster of suppliers and employers around TSMC, that could push additional demand into nearby West Valley housing, retail, hotels, industrial land and transportation infrastructure. It could also intensify competition among West Valley cities for advanced-manufacturing employers and the workers those companies need.
For residents, the practical questions are likely to be more immediate: how quickly roads are widened, where new retail opens, when the first major industrial tenants move in, and how traffic changes as construction and employment increase.
What to watch next
The most meaningful milestones now are not another rendering or announcement. They are visible construction, completed infrastructure, signed tenants and opening dates.
West Valley Post will be watching the progress of Halo Vista’s road and utility work, the first industrial buildings, Costco and hospitality projects, supplier commitments and any changes to the project’s timing or public infrastructure agreements.
Image note: Featured photograph shows TSMC Fab 21 under construction in Phoenix in November 2023. The image is archival and does not depict current Halo Vista construction. Photo by Hunter Trick via Wikimedia Commons, licensed under CC BY-SA 4.0.
