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La Mesa Accessory Dwelling Units (ADUs) Information
ACCESSORY AND JUNIOR ACCESSORY DWELLING UNITS (ADU/JADU)
Accessory Dwelling Units (ADUs) and Junior Accessory Dwelling Units (JADUs) Explained
Accessory Dwelling Units (ADUs) and Junior Accessory Dwelling Units (JADUs) are additional housing units located on the same property as a single-family home. These units provide flexibility for homeowners to create additional living space, either within their existing structure or as a separate unit, to accommodate family members, renters, or guests. General Regulations for Accessory Dwelling Units and/or Junior Accessory Dwelling Units can be found in La Mesa’s Code of Ordinances, Ordinance No. 2023-2903.
ADUs:
- ADUs are self-contained living units that can be either attached to or detached from the primary residence.
- They typically include a kitchen, bathroom, sleeping area, and living space.
- ADUs offer homeowners the opportunity to generate rental income, provide housing for family members, or downsize while remaining on their property.
JADUs:
- JADUs are a specific type of ADU that are smaller in size and must be contained within the existing footprint of the primary residence.
- They are limited in size and amenities but can still provide a separate living space with a private entrance.
- JADUs are often created from underutilized space within a home, such as a garage, basement, or attic.
City of La Mesa Accessory Dwelling Unit (ADU) Guidebook
The City has released a new guide on development of Accessory Dwelling Units (ADUs) focused on single-family homeowners interested in adding an ADU to their property. The City of La Mesa Accessory Dwelling Unit (ADU) Guidebook (PDF) has been completed! The Guidebook provides information on what an ADU is and why they are an important element to providing much-needed housing. Rules and regulations are covered, and readers are guided through the decision, design, and development processes to construct an ADU, including basic information on financing and how to select and work with building professionals. Design ideas are provided, with sample layouts based on actual lots located in La Mesa and sample floor plans. The Guidebook provides an easy-to-use resource, with links to other resources, for homeowners to understand ADUs and their development with important information that may be unknown or unfamiliar to them.
How to Apply
Applications for Accessory Dwelling Units and Junior Accessory Dwelling Units are now being accepted online through the Maintstar Portal.




