TSMC Eyes Massive Land Grab In North Phoenix

The chip giant isn’t slowing down. Taiwan Semiconductor Manufacturing Co. (TSMC) wants to scoop up another 902 acres of state land in North Phoenix, pushing its already enormous footprint even further into “The Valley.” If approved, the sale could reshape the balance between industrial and residential growth in one of Arizona’s fastest-changing corridors.

Quick Points

• 902-acre expansion site near Loop 303

• Auction set for January 7, 2026

• Starting bid at $197.25 million

• Local pushback over industrial zoning

• NorthPark project ties TSMC to mixed-use development

Als0 Read: AZ’s NorthPark Transforms With TSMC Expansion & Pulte Plans

A Giant Move In The Making

TSMC isn’t just adding a few acres. It’s eyeing almost a square mile of land to grow its Arizona campus. The company filed to buy 902 acres of state trust land south of the Loop 303 freeway, aiming to extend its semiconductor hub that already anchors North Phoenix’s new tech district. The Arizona State Land Department (ASLD) will auction the property in early 2026, starting at nearly $200 million.

• Auction handled by ASLD

• Infrastructure costs near $250 million

• Rezoning required for industrial use

• Planned Unit Development zoning in process

• PUD must match TSMC’s current operations

Local homeowners & HOA groups have voiced strong opposition, arguing the land should remain free from industrial zoning. The rezoning fight could stretch well into 2025 as the City of Phoenix weighs how to balance tech expansion with neighborhood concerns.

The result will signal how much more heavy industry the north edge of “The Valley” can absorb before residential interests push back.

The NorthPark Expansion Puzzle

The 902-acre tract sits inside the larger NorthPark Phoenix Development, a nearly 7,000-acre project blending residential, employment, commercial, & industrial uses. Pulte Homes was the original applicant, but TSMC joined as a partner in summer 2025, adding industrial weight to what was once a suburban master plan.

• NorthPark still in rezoning phase

• City approvals expected in late 2025

• TSMC site part of “Innovation Corridor”

• Pulte seeking more state land nearby

• No auction date yet for Pulte’s parcels

NorthPark’s evolution shows how North Phoenix is being rebuilt in layers. Homes, offices, and high-tech factories are all competing for desert space. Whether TSMC’s heavy industrial use fits inside that mix is now the question shaping the future of the area.

Als0 Read: NorthPark Project Faces Major Pubic Pushback In North Phoenix

Inside TSMC’s Arizona Footprint

TSMC’s first Phoenix deal in 2020 was already huge, 1,128 acres bought for $89 million. Since then, the company has turned the site into one of the most advanced semiconductor campuses outside Asia. The total investment has ballooned to $165 billion.

• Six fabrication plants planned

• Two packaging facilities on deck

• One R&D center under construction

• One fab running, two in progress

The expansion push shows TSMC isn’t done building its desert empire. If the new land is approved, the site could eventually host even more fabs, support operations, or supplier facilities tied to its global chip pipeline.

Neighbors Changing Fast

Around TSMC’s site, more projects keep stacking up. Halo Vista, a separate 2,300-acre mixed-use project, sits north, west, & east of TSMC’s current land. Developers Mack Real Estate Group and McCourt Partners are turning it into a blend of retail, office, research, hospitality, and housing.

• 30 million sq ft of planned space

• Up to 9,000 homes

• Costco & two Marriott hotels confirmed

• $56.28 million land auction in 2024

• $150 million infrastructure requirement

Add Amkor Technology’s nearby expansion, its chip testing & packaging plant now jumping from $2 billion to $7 billion, and the northern edge of “The Valley” starts to look like Arizona’s next semiconductor hub.

The desert is turning industrial fast, and every acre counts.

Als0 Read: A Very Important Update For Halo Vista, TSMC, And NorthPark