Maximum building and structure height in unincorporated Solano County is set by zoning district under Chapter 28 and listed in the development-standards tables (such as Tables 28.31B and 28.32C). Certain features - chimneys, vents, and similar architectural or mechanical appurtenances - may exceed the district height limit.
Solano County does not use a single countywide height cap; the maximum height of buildings and structures is established by the property's zoning district under Chapter 28 (Zoning Regulations). The County's guidance confirms that the zoning district specifies maximum height restrictions along with setbacks, and the numeric height limits by district appear in the Zoning Code's development-standards tables (for example, Tables 28.31B and 28.32C are referenced for height and setbacks by district). The Code also provides height-limit exceptions: chimneys, vents, and other architectural and mechanical appurtenances - and, with proper permitting, certain towers and spires - may be permitted to exceed the otherwise applicable district height limit. Accessory dwelling units and other specific structure types have their own height rules cross-referenced to the same district tables. Because the figures depend on the zone, owners should identify their zoning district through the County GIS Parcel Viewer and confirm the applicable table, or contact Planning Services, before designing a structure. Within incorporated cities, height limits are governed by the individual city, not Solano County.
Constructing a building or structure taller than the maximum height for its zoning district, without an approved variance, violates Chapter 28 and can result in stop-work orders, denial of final inspection, and required modification. Only the specific exempt features (such as chimneys and vents) may lawfully exceed the district limit.
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Solano County, CA
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See how Solano County's structure height limits rules stack up against other locations.
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