What to do
Find your property’s environmental information
Check in the Property Information Map (PIM).
Search with your address or block and lot numbers.
Look in the Environmental Information section.
- Slope of greater than 20% or 25%
- Geotechnical risk like landslides and liquefaction
- Soil and groundwater contamination (Cortese and Maher ordinances)
- Other physical conditions like excess air pollution, archeological areas, and flood zones
Email email@example.com for additional information on any physical conditions listed for your property.
If you are in a Maher area
If your project will excavate 50 cubic yards or more, follow instructions in Information Sheet G-14.
If you are in a landslide or liquefaction area or have a slope more than 25%
Check if your project includes:
- Construction of a new building or structure with more than 1,000 square feet of new projected roof area
- Horizontal or vertical additions with more than 500 square feet of new projected roof area
- Grading, including excavation or fill, of over 50 cubic yards of earth materials
We may also review your project and decide it could have a substantial impact on the slope stability.
Comply with slope protection requirements for your building project.
Get a geotechnical report for certain projects
You will need a report from a geotechnical engineer if your project includes:
- A new building (except one-story storage or utility like a shed or garage)
- Horizontal additions that increase the footprint more than 50% of the existing square footage
- Slope fills, gradings, special foundations, or other drainage or soil work in the Properties Subject to the Slope and Seismic Hazard Zone Protection Act (SSPA) Ordinance Information Sheet S-05.
Last updated November 16, 2022