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.

Based on information submitted to CRMLS as of June 4, 2026 3:25 PM EDT . All data is deemed reliable but is not guaranteed accurate by the MLS. All information should be independently reviewed and verified for accuracy. IDX information is provided exclusively for consumers’ personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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Property Details of 0 W San Martin Avenue

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Santa Rosa

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Property Details of 0 W San Martin Avenue

Property Details

Basic Information

Building

Location

Finance

Community

Schools

Map Location

Hi there! How can we help you?

Hi there! How can we help you?

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Santa Rosa