Prosper ISD | New Elementary School No. 21 in Mckinney, TX

Prosper ISD | New Elementary School No. 21 is a new 126,734 sq ft facility under construction at Limestone Avenue in Mckinney. The project carries an estimated cost of $56,000,000. This places the build in the top quarter of new construction filings in Collin County, where the median estimated cost is $800,000. The scheduled build window of 531 days is longer than the county median of 212 days, reflecting the scale of the facility.

Huckabee is the design firm of record for this project. The firm has six other TDLR-registered projects totaling $31,181,000 across various Texas districts, including work in Killeen, Waco, and Georgetown. Prosper ISD itself has five other registered projects totaling $261,275,856, most of which are in the Prosper area. These include the New Dist. Admin/Outdoor Comm. Center, which is valued at $122,324,522, and the Reynolds Middle School project at $33,299,857.

The construction is located in ZIP code 75071, a Collin County area with an estimated population of 69,396. Census estimates for the area show a median household income of $132,839 and a median owner-occupied home value of $448,500. The housing stock is predominantly owner-occupied, with approximately 23,861 housing units. The Collin County unemployment rate was 4.6 percent in July 2026, higher than a year earlier.

Plan review was completed in November 2024, and construction was scheduled to begin in December 2024. The filing lists a completion date of June 2026. However, TDLR has not yet recorded a final inspection, so the current state of the site is not confirmed in the public record. The registered accessibility specialist for this project is Ross A Thomas. The project involves public funds and public land.

Project Context

The $442 cost per square foot is above the Collin County median of $120 per square foot for new construction. This variance is typical for large-scale educational facilities that require specialized infrastructure. The project registration with TDLR was finalized in November 2024. The status of the building is strictly defined by the construction record; there is no public confirmation of occupancy or operational status beyond the pending inspection.