Compton, CA Accessory Structures: ADU Impact Fees (2026)
Key Facts
- Full fee exemption
- ADUs under 750 sq ft
- Prorated fee
- ADUs 750 sq ft or larger
- Fee basis
- Proportional to primary dwelling size
- Utility connection fee
- Allowed, sized to ADU burden
- Governing state law
- Gov. Code § 66000 et seq.
Summary
Compton exempts small accessory dwelling units from development impact fees entirely. Section 30-11.2.e.2.a states that 'ADUs that are less than 750 square feet shall not be subject to impact fees,' while units of 750 square feet or larger are charged fees scaled proportionally to the size of the primary dwelling rather than a flat citywide rate.
e. Fees and Utility Connections. 1. ADUs and JADUs shall have adequate water and sewer services... Consistent with Government Code Section 65852.2(f), the connection may be subject to a connection fee or capacity charge that shall be proportionate to the burden of the proposed ADU. 2. The owner of an ADU or JADU shall be subject to the payment of all sewer, water and other applicable fees, including impact fees set forth in Government Code Section 66000 et seq., except as follows: (a) ADUs that are less than 750 square feet shall not be subject to impact fees. (b) ADUs that are 750 square feet or more shall be charged impact fees that are proportional in relation to the square footage of the Primary Dwelling.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4952997; v15 updated 2026-07-14; through 07-14-2026).
Full Breakdown
e governs fees and utility connections for ADUs and JADUs. 2(f). b requires that ADUs of 750 square feet or more 'be charged impact fees that are proportional in relation to the square footage of the Primary Dwelling,' rather than the full fee a new standalone home would owe. j, most detached ADUs built at the code's 850-square-foot studio/one-bedroom ceiling clear the 750-square-foot exemption line and instead pay a prorated fee tied to how large the main house is, rather than the same flat impact fee charged on new single-family construction.
Violations & Fines
There is no separate penalty provision for impact fees; the requirement is enforced through the standard building permit process. An ADU cannot obtain its Certificate of Occupancy under Section 30-11.2.d until any impact fees actually owed under Section 30-11.2.e.2 have been paid to the city, and misrepresenting an ADU's square footage to claim the under-750-square-foot exemption would fall under the Municipal Code's general fraud and misdemeanor penalties in Section 1-6.2.
Frequently Asked Questions
Do I owe impact fees on a small Compton ADU?
What if my ADU is bigger than 750 square feet?
Do I need a separate water meter for my ADU?
Is the impact fee exemption based on state or city law?
Sources & Official References
Other rules in Compton
California rules heatmap·Compare Compton to another location·View the California accessory structures overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.
ADU Impact Fees in Nearby Cities
How other cities in Los Angeles County handle adu impact fees.