Environmental Rules in San Jose, CA (2026)
6 verified environmental rules for San Jose, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
San Jose requires on-site stormwater runoff treatment measures on most projects that create 5,000+ square feet of new or replaced impervious surface, with a lower 2,500-square-foot trigger for small projects.
San Jose Stormwater Treatment for New Development
Some RestrictionsSan Jose Municipal Code § 20.95.020
Whenever the creation, on or above ground through installation, construction, or replacement, of five thousand (5,000) square feet or more of impervious surface will occur through a proposed development or redevelopment of real property... or C. Whenever the creation...of two thousand five hundred (2,500) or more, but less than five thousand (5,000) square feet, of impervious surface will occur...
Erosion Control
San Jose requires a grading permit or a director-approved notice of exemption before any excavation or fill work, per Municipal Code § 17.04.310 and § 17.04.340, administered by the Department of Public Works.
San Jose Grading Permit Requirements
Some RestrictionsSan Jose Municipal Code § 17.04.340
A. Permits required. No person shall do any grading without first obtaining a grading permit or a notice of exemption pursuant to Section 17.04.310 from the director. A separate permit shall be required for each site and may cover both excavations and fills.
Coastal Development
San Jose is an inland city located at the southern end of San Francisco Bay and is not within the California Coastal Commission's jurisdiction. The Coastal Act's coastal development permit requirements do not apply to San Jose. However, development near waterways, wetlands, and the bayfront is subject to local environmental review, CEQA compliance, and permits from agencies such as the US Army Corps of Engineers and the San Francisco Bay Conservation and Development Commission (BCDC) for projects within 100 feet of the bay shoreline.
San Jose Coastal Development Rules
Some RestrictionsCalifornia Coastal Commission — Coastal Zone Boundary
Information on Digital Coastal Zone Boundaries: The original 1977 Coastal Zone Boundary maps were mylar (drafting film) copies of 161 USGS 7.5 minute topographic quadrangles with an inked boundary added. This digital version of the boundary was developed to provide a georeferenced, attributed (to explain the basis of the mapped Coastal Zone), cadastral (parcel-based) depiction of the adopted Co...
Flood Zones
Any construction or development in a San Jose special flood hazard area needs a development permit from the floodplain administrator before work begins, including manufactured homes.
San Jose Flood Development Permit Required
Some RestrictionsSan Jose Municipal Code § 17.08.570
A development permit shall be obtained before any construction or other development, including manufactured homes, within any area of special flood hazard established in Section 17.08.510. Application for a development permit shall be made on forms furnished by the city of San Jose.
Defensible Space
San Jose properties in mapped Very High Fire Hazard Severity Zones, including Almaden Valley and Coyote Valley, must maintain 100 feet of defensible space around structures under California Public Resources Code §4291, with annual San Jose Fire Department inspections.
Defensible Space in Wildland-Urban Interface
Some RestrictionsCalifornia Public Resources Code § 4291
(1) (A) Maintain defensible space of 100 feet from each side and from the front and rear of the structure, but not beyond the property line, except as provided in subparagraph (B). The amount of fuel modification necessary shall consider the flammability of the structure as affected by building material, building standards, location, and type of vegetation. Fuels shall be maintained and spaced ...
Flood Elevation Requirements
San Jose requires new construction and substantial improvements inside FEMA-mapped special flood hazard areas to elevate the lowest floor to or above the base flood elevation shown on the flood insurance rate map, verified by a licensed engineer or surveyor.
San Jose Base Flood Elevation Rule
Some RestrictionsSan Jose Municipal Code § 17.08.620(A)(7)(b)
Zones A, A1-A30, AE or AH. Elevated to or above the base flood elevation specified on the FIRM or the best available data as defined in Section 17.08.210 when base flood elevation has not been provided. Upon completion of the structure, the elevation on the required vertical datum showing the lowest floor, including basement, shall be certified by a registered professional engineer or surveyor ...
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County ordinances apply to unincorporated areas and may supplement San Jose city rules.
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