Title 17 — ZONING CODE Division III — District Regulations St. Helena Zoning Code · 2026-07 edition · ingested 2026-07-07 · St. Helena In this part Chapter 17.15 — ESTABLISHMENT OF BASE ZONING DISTRICTS Chapter 17.16 — RESIDENTIAL ZONING DISTRICTS Chapter 17.17 Chapter 17.18 — BUSINESS AND INDUSTRIAL ZONING DISTRICTS Chapter 17.19 Chapter 17.20 — PUBLIC AND OPEN SPACE ZONING DISTRICTS Chapter 17.21 — OVERLAY ZONING DISTRICTS Chapter 17.22 — SPECIFIC TO USES Chapter 17.23 — RESERVED