158-acre mountain site near TSMC plant up for grabs as Phoenix eyes new hiking preserve

Article originally posted on Phoenix Business Journal on October 13, 2025

About 158 acres of state trust land in north Phoenix is going up for auction in November, with the city of Phoenix’s parks and recreation department eyeing it for a new mountain preserve and hiking trail. But that doesn’t mean a residential builder can’t swoop in and outbid them, with a starting bid at $11.9 million.

Several documents, including an appraisal report submitted to the Arizona State Land Department, suggest “it is likely that future potential development would entail at least some, if not all, residential type uses.”

Another document listed the most probable buyer as “an investor or residential developer.”

The site is located directly behind Sandra Day O’Connor High School, off the I-17 freeway and Jomax Road.

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