Welcome to Hayes Valley one of San Martin's most coveted gated enclaves. This extraordinary 20-acre estate parcel delivers the rarest combination: sweeping panoramic views, mature oak-studded terrain, rolling green hills, and the privacy of a gated community just one hour from Silicon Valley. Gently rolling and fully usable, this is one of the finest parcels in all of South County. Perimeter-fenced with an established Road Maintenance Association. Water at street via American Water; power nearby. Zoned HSD1 build your dream home with breathtaking views, add a barn, ADU, or guest retreat. Establish a vineyard, graze cattle and horses across the lush soft hills, or launch a boutique agri-business along the South County Wine Trail minutes from CordeValle Golf Club. Serene, peaceful, and absolutely irreplaceable. Architectural plans available at offer. Minutes to Morgan Hill, Gilroy, and Hwy 101. Buyer to verify all use and development options with Santa Clara County.