ADU Impact Fees: Camarillo vs Oxnard
How do adu impact fees rules compare between Camarillo, CA and Oxnard, CA?
Camarillo and Oxnard have similar restriction levels.
Camarillo, CA
Ventura County
California Government Code §65852.2(f) prohibits Camarillo from charging any impact fees on ADUs smaller than 750 square feet. ADUs of 750 sq ft or larger may be charged impact fees proportional to the primary dwelling's size. Water and sewer connection fees are similarly limited by state law.
View full Camarillo rules →Oxnard, CA
Ventura County
Oxnard cannot impose impact fees on any ADU under 750 square feet — an absolute prohibition under Cal. Gov. Code §65852.2(f)(3)(A). ADUs of 750 sf or larger pay impact fees proportional in square footage to the primary dwelling. Building permit fees, plan-check fees, and school facilities fees on ADUs of 500 sf or larger (under Cal. Ed. Code §17620) still apply.
View full Oxnard rules →Key Facts Comparison
| Fact | Camarillo | Oxnard |
|---|---|---|
| Under 750 sq ft | No impact fees allowed | - |
| 750+ sq ft | Proportional to primary unit | - |
| Statute | Gov. Code §65852.2(f) | - |
| Sewer District | Camarillo Sanitary District | - |
| School Fees | Apply to ADUs 500+ sq ft | Apply to ADUs >=500 sf (Ed. Code §17620) |
| Governing Law | - | Cal. Gov. Code §65852.2(f)(3) |
| Under 750 sf | - | No impact fees - absolute waiver |
| 750+ sf | - | Proportional to primary dwelling |
| Collected By | - | Oxnard Building Division |
Highlighted rows indicate differences between cities.
Camarillo FAQ
Do I have to pay impact fees on a Camarillo ADU?
No, if your ADU is under 750 square feet — state law (Gov. Code §65852.2(f)) prohibits impact fees on ADUs below that threshold. ADUs 750 sq ft and larger pay fees proportional to the size of the primary dwelling.
Do I need a separate water and sewer connection for my Camarillo ADU?
Not for an ADU created within an existing single-family home — state law forbids requiring a separate utility connection. New detached ADUs may require separate metering depending on the utility provider.
Oxnard FAQ
Will I pay impact fees on a small Oxnard ADU?
No. Cal. Gov. Code §65852.2(f)(3)(A) prohibits Oxnard from charging impact, connection, or capacity fees on any ADU under 750 sf. Plan-check and building permit fees based on construction valuation still apply, as do school facilities fees for ADUs at or above 500 sf.
What if my Oxnard ADU is 1,000 sf?
Cal. Gov. Code §65852.2(f)(3)(B) caps the impact fee at an amount proportional in square footage to the primary dwelling's impact fee. The City cannot charge a flat ADU fee — it must be size-proportional. School fees still apply at the Level 1 rate under Cal. Ed. Code §17620.
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