The Mid-Century Index: Ranking Silicon Valley Eichler ZIP Codes by 20-Year Appreciation Modeling

Eichler homes have become Silicon Valley’s blue-chip architectural asset—rare, protected, and consistently outperforming the broader market. This Mid-Century Index reveals the ZIP codes with the strongest 20-year appreciation, from Palo Alto’s historic enclaves to Sunnyvale’s tech-proximate communities. By analyzing architectural rarity, land value, school districts, and community capital, this report uncovers why certain Eichler neighborhoods deliver exceptional long-run growth and remain among the most coveted investments in California real estate.