ADU Impact Fees: Chino vs Hesperia
How do adu impact fees rules compare between Chino, CA and Hesperia, CA?
Chino and Hesperia 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 →Hesperia, CA
San Bernardino County
California Gov. Code 66315 prohibits Hesperia from imposing impact fees on ADUs under 750 sq ft. Larger ADUs may only be charged fees proportional to the primary dwelling's square footage. School fees and Mojave Water Agency capacity fees may still apply.
View full Hesperia rules →Key Facts Comparison
| Fact | Chino | Hesperia |
|---|---|---|
| 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 | - |
| ADUs under 750 sq ft | - | No city impact fees |
| ADUs 750+ sq ft | - | Proportional fees only |
| Authority | - | Cal. Gov. Code 66315 |
| Water/Sewer Connection | - | Mojave Water Agency / Victor Valley WRA |
| School Fees | - | May apply for ADUs over 500 sq ft (Ed. Code 17620) |
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)).
Hesperia FAQ
Does Hesperia charge impact fees on a 600 sq ft ADU?
No. California Gov. Code 66315 prohibits any city impact fee on ADUs under 750 sq ft. Building permit fees and water/sewer connection charges may still apply at actual cost.
What fees apply to a 1,000 sq ft ADU in Hesperia?
Building permit and plan check fees apply, plus impact fees proportional to the ADU's share of the primary dwelling's square footage. School fees from Hesperia Unified may apply since the ADU exceeds 500 sq ft, and Mojave Water Agency capacity fees may also apply.
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