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Frequently asked questions

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Question (6)Category / ReferenceStatus
Can I build an accessory dwelling unit (ADU) without increasing septic capacity?
Accessory Dwelling Units (ADU)Well & Septic
Answered
18 hours ago
What is required by Well and Septic to add an Accessory Dwelling Unit (ADU) on my property?
Accessory Dwelling Units (ADU)Well & Septic
Answered
18 hours ago
How do I get an additional address for my property?
Accessory Dwelling Units (ADU)FireProcessArticle 5Division C. - Signing and Building Numbering.
Answered
1 week ago
Can I use my Accessory Dwelling Unit (ADU) for a Vacation or Hosted Rental?
Accessory Dwelling Units (ADU)Vacation & Hosted Rentals§ 26.24.020§ 26.28.160§ 26.24.170
Answered
Aug 14, 2025
Can I build an Accessory Dwelling Unit (ADU)?
Accessory Dwelling Units (ADU)§ 26.88.060
Answered
Nov 8, 2024
Can I designate an ADU as an affordable unit to defer required Affordable Housing fees while constructing my primary home?
Accessory Dwelling Units (ADU)Housing§ 26.89.040
Answered
Sep 9, 2024
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Permit Sonoma
2550 Ventura Avenue
Santa Rosa, CA 95403

Contact

Email: PermitSonoma@sonoma-county.org

Phone: (707) 565-1900