Who do I contact to determine if I need a permit for work on my house, street, or creek?

Contact the Public Works Permit staff at (925) 313-2000 or email Permit staff.  For more information about permits visit the Permit Portal website.

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1. How do I get an encroachment permit?
2. How do I get permission for my contractor and I to temporarily use land owned by the County or Flood Control District?
3. My property is adjacent to County or Flood Control District owned property. I need to use it to build on my property. How do I get permission for my contractor and I to temporarily use the land?
4. When do I need an encroachment permit, and where do I get one?
5. Where do I apply for a permit to do construction on my property?
6. Who do I contact to determine if I need a permit for work on my house, street, or creek?