Land Rush

The land grab in Deer Valley is moving fast, and you can feel the urgency in every new closing. Suppliers tied to TSMC’s Arizona ramp are no longer circling. They’re buying. Mack Innovation Park, near Interstate 17 & Loop 101, has turned into one of the clearest real estate signals in Greater Phoenix, showing how semiconductor demand is reshaping "The Valley" one parcel at a time. More than 1 million square feet is already standing, fully active, and now the remaining dirt is getting harder to find. That scarcity is changing the tempo.

Quick Points

• UIS paid $41.1 million for 28 acres
• Mornstair closed on 51.9 acres
• Westcore bought three leased buildings
• Mack still controls 80 nearby acres
• Halo Vista is using the same playbook

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Deals Hit Faster As Suppliers Move

What started as a speculative bet now looks like a textbook demand test. Mack’s early move was simple. Build industrial shells first, prove suppliers would lease them, then let the land values follow. That’s exactly what happened. Early occupancy gave Asian semiconductor groups confidence, and once TSMC’s Arizona operations pushed deeper into production, the pace changed. Companies that had been studying Deer Valley suddenly started signing. You can now see a clear acceleration since the opening months of 2026, with major users locking in sites before the remaining inventory disappears.

• UIS bought 28 acres
• 480,000 square feet planned
• DAUM handled the buy
• Land options keep shrinking

The latest March 24 sale stands out. United Integrated Services Corp. paid $41,055,000 for vacant land inside the park and plans a 480,000-square-foot industrial facility. It’s a sharp sign that suppliers now want control, not just leases.

Big Sales Keep Repricing The Park

The recent transaction stack tells the story better than any market report. In February, HVAC company Mornstair picked up about 51.9 acres for $59,924,000. A few weeks earlier, Sunlit Chemicals closed on 10 acres for $8,712,000. Then came the headline-grabber from December, when Westcore Properties paid $90,700,000 for Site A. That piece includes three multi-tenant industrial buildings across roughly 22 acres, and every building is already fully leased. Sizes range from 62,831 square feet to 201,189 square feet, which gives incoming suppliers options without waiting for long construction cycles.

• Westcore bought Site A
• Three buildings came with it
• All space is leased
• Sizes top 200,000 square feet
• Pricing keeps climbing

For buyers, that leasing story matters. It shows this isn’t idle speculation anymore. The proof is already on the ground.

Also Read: APS Plans 2,000-Megawatt Desert Sun Power Plant In Gila Bend

Mack Repeats The Formula At Halo Vista

Here’s where the strategy gets bigger. Mack is now applying the same speculative industrial method at the 2,000-acre Halo Vista project near TSMC. The project recently broke ground with McCourt Partners, and Costco is already one of the first named users. Some of the earliest buildings planned for the science & technology districts will again be spec industrial space, aimed at capturing fast-moving suppliers before they look elsewhere in Greater Phoenix. It’s a repeatable formula, and Deer Valley gave Mack the confidence to scale it.

• The Forge handles manufacturing
• Sonoran Oasis targets R&D
• Costco is an early user
• Spec buildings come first

The layout also widens the appeal. Manufacturing, engineering, and research groups can cluster in one pedestrian friendly district, which keeps supplier ecosystems tight and land absorption moving.

More Space Is Coming Across Deer Valley

Mack isn’t the only group pushing industrial growth in this submarket. Another major addition is ReDiscover Logistics Park, the office-to-industrial conversion from ViaWest Group & Barings LLC. The 43.5-acre project adds about 809,000 square feet through four buildings, each running roughly 200,000 to 220,000 square feet. That matters because Deer Valley’s remaining industrial options are thinning fast, and every new block of space now serves a supplier pipeline that keeps getting deeper.

• 43.5-acre conversion site
• 809,000 square feet coming
• Four industrial buildings planned

Taken together, these projects show how Deer Valley became the proving ground for TSMC supplier demand, then quickly turned into one of the busiest industrial fronts in "The Valley." The market tested the idea. Now it’s racing ahead.

Also Read: Phoenix City Vote Approves TSMC Co Rezoning At NorthPark