NorthPark could bring 15,150 homes south of Loop 303 near TSMC

NORTH PHOENIX — One of the largest master-planned communities in the Phoenix growth corridor is already entitled south of Loop 303, setting the framework for as many as 15,150 homes, a major semiconductor employment district, commercial centers and more than 2,300 acres of open space immediately south of TSMC Arizona.

NorthPark covers roughly 6,354 acres of Arizona State Trust Land between Loop 303, Interstate 17, the Peoria boundary and the Central Arizona Project canal. Phoenix City Council approved the NorthPark Planned Unit Development on Dec. 17, 2025, changing the land from S-1 zoning to a PUD for residential, mixed-use, commercial, employment and industrial development.

The scale is easier to understand by comparison with Anthem. NorthPark’s current plan allows up to 15,150 homes across about 6,354 acres. Anthem’s original master-planned community is commonly described at roughly 6,800 homes on about 3,800 acres. NorthPark therefore has the potential to become a substantially larger residential community while also reserving a major share of its land for employment and open space.

A 900-acre semiconductor corridor across Loop 303 from TSMC

The biggest change from NorthPark’s original 2024 concept is the role of TSMC Arizona. TSMC joined PulteGroup in the entitlement effort in 2025, and the plan expanded its Innovation Corridor from 526 acres to approximately 902 acres. The district sits along Loop 303, directly south of TSMC’s existing campus, and allows semiconductor manufacturing and related employment uses.

That makes NorthPark different from a conventional large housing subdivision. Its northern edge is planned as part of the emerging semiconductor employment cluster around TSMC, while residential neighborhoods occupy large areas farther south and west.

TSMC’s involvement also changed the housing plan. The maximum number of dwellings was reduced from 19,247 in the original application to 15,150, lowering the overall gross residential density from about 3.0 to 2.4 dwelling units per acre.

More than one-third of the site is planned as open space

The current NorthPark plan identifies approximately 2,309 acres of open space, including roughly 2,100 acres of natural open space intended for the Sonoran Preserve and about 209 acres of community open space. The preserved areas are concentrated around the foothills and mountainous terrain in the western and southern portions of the property.

The approved framework also calls for an internal trail network and connections between developed neighborhoods and preserve land. Phoenix’s approval includes requirements affecting trails, arterial roads, transit infrastructure and future public facilities.

51st Avenue, 43rd Avenue and Dixileta become major growth corridors

The development would require a street network capable of serving a community roughly comparable to a small Arizona city. City approval documents call for major arterial improvements along 43rd Avenue, 51st Avenue and Dixileta Drive.

At least 140 feet of right-of-way is required for 43rd Avenue between Loop 303 and Dixileta and for 51st Avenue extending south from Loop 303 toward Stetson Valley Parkway. The plan also requires transit accommodations along the major arterial streets, including bus pads and bays.

Those improvements would connect with a separate regional project already underway. The Arizona Department of Transportation began construction in 2026 on the $129 million Loop 303 project between I-17 and 51st Avenue, including direct freeway-to-freeway ramps at I-17 and widening Loop 303 to three lanes in each direction.

NorthPark, Halo Vista and TSMC are forming a new growth center

NorthPark is only one component of the development now surrounding TSMC. Across Loop 303, the approximately 2,400-acre Halo Vista project has begun development around the semiconductor campus, with industrial, research, office, retail and mixed-use components planned.

Together, TSMC, Halo Vista and NorthPark establish a development corridor extending across both sides of Loop 303 near I-17. NorthPark is positioned to supply housing, retail, services, infrastructure and additional employment land as that corridor grows.

The distinction between an approved master plan and completed development remains important. Phoenix has approved the zoning framework for NorthPark, but the 15,150 homes represent a maximum buildout allowance rather than homes that are currently under construction. Individual portions of the property still require subsequent planning, infrastructure, land disposition and development steps.

Because the property is State Trust Land, development also depends on the Arizona State Land Department’s process for selling or leasing individual areas. State Trust Land is managed to generate revenue for public-school and other institutional beneficiaries.

What is now settled is the broad land-use framework: a 6,354-acre community south of Loop 303, up to 15,150 homes, roughly 902 acres dedicated to an Innovation Corridor, and more than 2,300 acres of open space. If built out over the coming decades, NorthPark would extend the developed footprint of north Phoenix west from I-17 toward Peoria and create a major population center immediately beside Arizona’s semiconductor hub.

Sources: City of Phoenix NorthPark PUD and City Council records; NorthPark project documents; Arizona Department of Transportation. The development map accompanying this story is a planning graphic and should not be interpreted as a construction schedule or final subdivision plan.