Accessory Dwelling Units - ADUs

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Fees Table

Estimated Fees for Reference

Size (sf)	Fee Type	Amount	Notes
749	Plan Check Fee	$2,562.16	(Valuation $125,360.13)
	Permit Fee	$3,147.75
	Development Impact	$0.00
1200	Plan Check Fee	$4,093.01	(Valuation $200,844.00)
	Permit Fee	$3,150.39
	Development Impact	$18,711.00

*actual cost will vary based on valuation, fixture count, and square footage*

View the Master Fee Schedule Here

View the Impact Fee Schedule Here

What is an ADU?

What is an Accessory Dwelling Unit (ADU)?

An Accessory Dwelling Unit (ADU) is a distinct, self-contained living space situated on the same property as a primary residence. Commonly referred to as granny flats, in-law units, second units, or casitas, ADUs typically include the following features:

Living and sleeping areas
A kitchen
A bathroom

ADUs can be categorized into several types:

Detached ADUs: Standalone structures that are separate from the main residence.
Attached ADUs: Extensions connected to the existing home.
Conversion ADUs: Created by repurposing a portion of an existing structure, such as a garage or shed, or part of the main house.

For questions please contact Planningcounter@pomonaca.gov

What is a Junior ADU?

What is a Junior Accessory Dwelling Unit (JADU)?

A Junior Accessory Dwelling Unit (JADU) is a more compact version of an ADU, typically developed within the existing footprint of a single-family home. Key characteristics of JADUs include:

Complete containment within an existing single-family residence
The option to share a bathroom with the primary dwelling
The requirement for an efficiency kitchen, which includes a sink, cooking appliance, food preparation counter, and storage cabinets

JADUs provide a valuable housing alternative, allowing homeowners to optimize their living space while offering an additional unit for use.

For questions please contact Planningcounter@pomonaca.gov

AB 2533 Notice

For any unpermitted ADU or JADU that was constructed before January 1, 2020, the following applies, per AB 2533 and is effective as ofJanuary 1, 2025:

Notwithstanding any other law, and except as provided in this bill, a local agency shall not deny a permit for an ADU or JADU that is in violation of California building standards (codes) or does not comply with any local ordinance regulating ADUs or JADUs.
The property owner applying for a permit to legalize an unpermitted ADU or JADU shall not be required to pay impact fees or connection or capacity charges except where utility infrastructure is required to comply with Health and Safety Code section 17920.3.
The local agency is prohibited from penalizing an applicant for having the unpermitted unit and requires the local agency to approve necessary permits to correct noncompliance with health and safety standards.
Upon receiving an application for permit to legalize an unpermitted ADU or JADU, an inspector from the local agency may inspect the unit for compliance with Health and Safety standards and provide recommendations to comply with these standards.