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Chino, CA Accessory Structures: ADU Impact Fees (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

ADU fee waiver threshold
750 sq ft or smaller
Larger ADU fee basis
cost per square foot
Administrative fee
12% of fee obligation
Adopting ordinances
Ord. 2019-007, amended 2022-005

Summary

Chino waives its citywide development impact fee entirely for accessory dwelling units of 750 square feet or less; larger ADUs pay a reduced cost-per-square-foot fee instead of the standard per-unit charge new homes pay.

E.For the construction of an accessory dwelling unit, development impact fees shall be charged to the developer on a cost per square-foot basis. Fees shall be only be charged for accessory dwelling units that are larger than 750 square feet.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 38).

Full Breakdown

Chino Municipal Code § 3.40.060 sets the basis for calculating development impact fees. Subsection (A) charges new residential construction on a per-unit basis but excludes accessory dwelling units from that method. Subsection (C) exempts additions to existing homes from impact fees generally, except ADU construction. Subsection (E) then charges ADUs on a "cost per square-foot basis," but provides fees "shall be only be charged for accessory dwelling units that are larger than 750 square feet", so smaller units pay nothing. A 12% administrative fee applies to whatever base fee is owed (§ 3.40.030(C)). Adopted by Ord. 2019-007, § 2 (2019); amended by Ord. 2022-005, § 2 (2022).

Violations & Fines

Unpaid impact fees hold up building permit issuance or final-inspection sign-off; a developer may pay under protest and contest the fee within 90 days under Government Code § 66020 (§ 3.40.160).

Frequently Asked Questions

Does Chino charge impact fees on ADUs?
Only if the ADU is larger than 750 square feet. Smaller units are fully exempt under § 3.40.060(E); larger ones pay a cost-per-square-foot fee instead of the standard per-unit charge new single-family homes pay.
When are ADU development impact fees due?
At building permit issuance, unless the owner elects under Government Code § 66007 to pay at final inspection instead (§ 3.40.070(C)(1)).

Sources & Official References

Other rules in Chino

Parking Rules: Overnight ParkingSome RestrictionsADU RulesSome RestrictionsShed & Carport RulesSome RestrictionsADU Owner OccupancySome RestrictionsADU Rental RestrictionsSome RestrictionsGarage ConversionsFew RestrictionsNoise Ordinances: Barking DogsSome RestrictionsNoise Ordinances: Decibel LimitsSome RestrictionsNoise Ordinances: Vehicle NoiseSome RestrictionsParking Rules: Curb Color RulesSome RestrictionsParking Rules: Abandoned VehiclesSome Restrictions

All Chino rules

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ADU Impact Fees in Nearby Cities

How other cities in San Bernardino County handle adu impact fees.

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Some Restrictions