ADU Impact Fees: Chino vs Rialto
How do adu impact fees rules compare between Chino, CA and Rialto, CA?
Chino and Rialto have similar restriction levels.
Chino, CA
San Bernardino County
Per Cal. Gov. Code §65852.2(f)(3), Chino CANNOT charge impact fees on ADUs under 750 sq ft. For ADUs 750 sq ft or larger, impact fees must be proportional - charged at a fraction equal to the ADU's square footage divided by the primary dwelling's square footage. Standard building-permit plan-check and inspection fees still apply.
View full Chino rules →Rialto, CA
San Bernardino County
ADUs under 750 sq ft are exempt from all impact fees in Rialto by force of state law (Cal. Gov. Code §66314(f)(3)). ADUs 750 sq ft or larger may be charged impact fees only proportionally to the primary dwelling's square footage. School-district fees are separately governed.
View full Rialto rules →Key Facts Comparison
| Fact | Chino | Rialto |
|---|---|---|
| Impact fee threshold | <750 sq ft = $0 impact fees (state mandate) | - |
| 750+ sq ft fee formula | Proportional: (ADU sf / primary sf) × fee | - |
| JADU impact fees | Exempt (under 500 sq ft) | - |
| Still payable | Building plan check, inspection, utility hookups | - |
| State statute | Cal. Gov. Code §65852.2(f)(3) | - |
| Refund remedy | Gov. Code §66020 protest within 90 days | - |
| Impact fee exemption | - | ADUs under 750 sq ft — zero impact fees (Cal. Gov. Code §66314(f)(3)(A)) |
| Larger ADUs (750+ sq ft) | - | Proportional fees only, based on ratio to primary dwelling |
| School fees | - | Not preempted; may apply over 500 sq ft (Ed. Code §17620) |
| Building permit fees | - | Cost-of-service charges still apply |
| Enforcement | - | HCD complaint under Gov. Code §66317.7 |
Highlighted rows indicate differences between cities.
Chino FAQ
Do I pay impact fees on a Chino ADU under 750 sq ft?
No. Cal. Gov. Code §65852.2(f)(3)(A) prohibits any impact fees on ADUs under 750 sq ft - this includes traffic, parks, school, and fire fees.
What fees still apply to a small ADU?
Building permit plan-check and inspection fees, water/sewer connection charges, and utility hookups - these are not 'impact fees' under the statute.
How are fees calculated for a larger ADU?
Proportional to size. If your ADU is 900 sq ft and your house is 1,800 sq ft, your impact fee would be roughly 50% of the standard fee schedule (Gov. Code §65852.2(f)(3)(B)).
Rialto FAQ
Will I pay impact fees on my 600 sq ft ADU?
No. State law (Cal. Gov. Code §66314(f)(3)(A)) prohibits any impact fees on ADUs under 750 sq ft. Building permit and plan-check fees still apply, but park, traffic, and sewer-capacity impact fees are exempt.
What if Rialto charges me an impact fee on a small ADU?
It's preempted. Request a written fee breakdown and cite Gov. Code §66314(f)(3)(A). Unresolved disputes can be escalated to California HCD's Housing Accountability Unit.
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