Glendale ADU Zoning Rules & Permit Guide

ADU Regulations in Glendale, California

Updated September 29, 2026

Situated in the Verdugo Mountains region of Los Angeles County, Glendale's ADU rules mirror California's state mandates. The dense urban environment means property owners should verify lot coverage limits before designing their project.

Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Glendale as of 2026. Regulations are governed by California's AB 68 (2020), AB 881 (2021), and AB 3182 (2024) which together establish a statewide ADU framework.

Additional Local Requirements for Glendale

• ADU by right in residential zones
• Minimum 150 sq ft
• Garage conversion allowed
• Dense urban lot constraints may apply

Frequently Asked Questions About ADUs in Glendale

Can I build an ADU in Glendale?

Glendale follows California state ADU law. Standard state minimums apply with no additional local restrictions for most properties.

What is the maximum ADU size allowed in Glendale?

ADUs in Glendale can be up to 1,200 square feet, subject to the property's zoning and lot coverage limits. Always confirm the exact allowed size with the Glendale planning department before designing your project.

What are the setback requirements for an ADU in Glendale?

ADUs in Glendale generally require setbacks of 4 ft rear, 4 ft side. California state law (AB 68) limits local setback requirements to 4 feet for existing structures, but always verify with local zoning.