Former World No. 1 Andy Roddick nearly collapsed to the ground, put his hands on his head and was visibly overcome with emotion. The then-21-year-old had just fired an ace that cemented the 2003 U.S.

In the sun-drenched landscape of Murrieta, California, nestled between palm trees and suburban sprawl, lies a treasure hunter’s paradise that defies the Golden State’s reputation for high prices.