What is an Accessory Dwelling Unit (ADU)?


Accessory Dwelling Units, also known as ADUs, granny flats, in-law units, or second units, are small residential units with kitchens and bathrooms.  Accessory Dwelling Units provide options for those interested in affordably housing a friend or family member, aging in place, creating a new income source, and helping tackle our regional housing shortage.


What is a Junior Accessory Dwelling Unit (JADU)?


Junior Accessory Dwelling Units (JADUs) are units created within the walls of a proposed or existing single-family residence and are no larger than 500 square feet. JADUs contain a basic kitchen utilizing small plug-in appliances; they may have their own restroom facilities or share them with the primary home.


Adopted Ordinance


On January 1, 2020, new State laws took effect updating how local agencies regulate ADUs and JADUs. The City of Pomona adopted Ordinance No. 4281, effective April 15, 2020, incorporating the new State regulations.

Ordinance No. 4281


Summary of ADU and JADU Standards


A summary of the new standards can be found in the forms below. However, please refer to Ordinance No. 4281 for all applicable standards.

ADU Summary of Standards

Sumario de Reglamentos Para ADUs