ADU Impact Fees: Moreno Valley vs Riverside
How do adu impact fees rules compare between Moreno Valley, CA and Riverside, CA?
Moreno Valley and Riverside have similar restriction levels.
Moreno Valley, CA
Riverside County
California Gov. Code §65852.2(f) prohibits Moreno Valley from charging any impact fees on ADUs smaller than 750 square feet. ADUs of 750+ sq ft pay impact fees proportional to the size of the primary dwelling. Water and sewer connection fees are similarly limited - separate utility connections are not required for ADUs created within an existing dwelling.
View full Moreno Valley rules →Riverside, CA
Riverside County
Riverside waives all local impact fees on ADUs under 750 sq ft per California Government Code §65852.2(f)(3). ADUs 750 sq ft or larger pay impact fees proportional to the primary dwelling square footage. Building permit and plan-check fees still apply through the Community & Economic Development Department fee schedule. School district fees follow SB 13 (2019) proportional rules.
View full Riverside rules →Key Facts Comparison
| Fact | Moreno Valley | Riverside |
|---|---|---|
| Under 750 sq ft | No impact fees | All impact fees waived |
| 750+ sq ft | Proportional to primary unit | Proportional to primary dwelling |
| Statute | Gov. Code §65852.2(f) | - |
| Water/Sewer District | EMWD | - |
| School Fees | Apply to ADUs 500+ sq ft | Proportional (SB 13) |
| State Law | - | Gov. Code §65852.2(f) |
| Utility Service | - | Shared meter often allowed |
Highlighted rows indicate differences between cities.
Moreno Valley FAQ
Do I have to pay impact fees on a Moreno Valley ADU?
No, if your ADU is under 750 square feet - state law (Gov. Code §65852.2(f)) prohibits impact fees on ADUs that small. ADUs 750+ sq ft pay impact fees scaled proportionally to the primary dwelling.
Will I need to pay a new EMWD connection fee for my Moreno Valley ADU?
Not for an ADU created within your existing home - state law forbids requiring a separate utility connection. A new detached ADU may require separate metering depending on the project scope; check with EMWD.
Riverside FAQ
Are ADU impact fees waived in Riverside?
Yes for ADUs under 750 sq ft. California Gov. Code §65852.2(f)(3) preempts all local impact fees on small ADUs. ADUs 750 sq ft or larger pay proportionally based on the principal dwelling's size, not the full single-family rate.
What ADU costs still apply in Riverside?
Standard building permit fees (based on construction valuation), plan-check fees, and Riverside Public Utilities service fees if a new electric or water meter is required. Property taxes will reassess on the added improvement.
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