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Frequently asked questions

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Question (237)Category / Reference
How can I find my septic system?
Well & Septic
Oct 27, 2025
Why am I being charged for school fees if I don't have any children?
Oct 26, 2025
What is a certificate of occupancy?
Definitions
Oct 26, 2025
What is the difference between architectural drawings and structural drawings? Why do I need both?
Definitions
Oct 25, 2025
Can waterless toilets be used on properties without a septic system?
Well & Septic
Oct 25, 2025
Where can waterless toilets be installed, and what are the requirements?
Well & Septic
Oct 25, 2025
What are the key operational aspects of a composting toilet?
Well & Septic
Oct 25, 2025
How should waste from a waterless toilet be disposed of, and who is responsible?
Well & Septic
Oct 25, 2025
Who can design a waterless toilet, and what certifications are required?
Well & Septic
Oct 25, 2025
What is needed to submit a complete application for permitting a waterless toilet?
Well & Septic
Oct 25, 2025
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Resources

Permit services

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Address

Permit Sonoma
2550 Ventura Avenue
Santa Rosa, CA 95403

Contact

Email: PermitSonoma@sonoma-county.org

Phone: (707) 565-1900