El Monte

El Monte allows both Accessory Dwelling Units (ADUs) and Junior ADUs (JADUs) in most residential zoning districts. ADUs are generally permitted in zones such as R-1, R-2, R-3, R-4 and MMU, with one ADU typically allowed on single-family lots, while some multi-family zones may allow up to two attached ADUs. JADUs are permitted only within existing single-family residences.

All ADU developments must comply with both California state law and El Monte’s local zoning standards. This ensures that while ADUs are broadly encouraged, they still meet local requirements related to land use, density and neighborhood compatibility.

El Monte aligns with California’s broader ADU legislation but has its own requirements for height, setbacks, and design review.

• Detached ADU: A standalone residential unit built on the same lot as the primary home. It functions as a fully independent living space.
• Attached ADU: A unit physically connected to the main dwelling and sharing at least one wall.
• Conversion ADU: Created by converting existing space such as a garage, basement, or interior portion of the home.
• Junior ADU (JADU): A smaller unit (up to 500 sq ft) created within the existing single-family home, often sharing bathroom facilities.

• Maximum Size:
  
  • Detached: up to 850 sq ft (studio/1-bedroom) or 1,000 sq ft (2+ bedrooms) under local program limits
  • Attached: generally limited to 50% of primary dwelling size, capped at around 850-1,000 sq. ft
    
    
• Setbacks:
  
  • Minimum 4 feet side and rear setbacks are generally required
  • Building-to-building separation may also apply in some cases
    
    
• Height Limits:
  
  • Height depends on zoning and structure type
  • Above-garage or detached units may be allowed up to approximately 18–20 feet depending on design and setback conditions
    
    
• Parking Requirements:
  
  • Parking requirements are reduced or waived in many cases, such as:
    
    • Proximity to public transit 
    • Conversion of existing structures
    • State law exemptions for certain ADUs

To build an ADU in El Monte, the following approvals and submittals are typically required:

• Completed ADU/JADU application
• Proof of property ownership
• Site plan and architectural drawings
• Income eligibility documentation (for program participation)
• Compliance with zoning and building codes
• Environmental and utility clearances if required

Homeowners should also review El Monte current fee schedule, utility connection requirements, and fire code compliance.

In El Monte, ADU applications are reviewed under ministerial approval rules, meaning they are processed without discretionary hearings. Once an application is deemed complete, the city is generally required to act within about 60 days.

In practice, the total timeline usually depends on factors such as plan completeness, the number of corrections required during plan check and zoning or eligibility reviews. As a result, most ADU projects typically take around 2-4 months from initial submission to final approval.

In El Monte, ADUs are allowed in residential zones where single-family and multi-family housing is permitted, while JADUs are allowed within existing single-family homes. The program does not set a specific minimum lot size requirement, with eligibility mainly based on zoning designation rather than lot size. However, ADUs must be on lots with an existing or proposed primary dwelling and must comply with all applicable zoning and site-specific standards reviewed by the city.

For the most current and complete information, refer directly to the City of El Monte.

These resources provide details on eligibility, design standards and application procedures. Additionally, California Government Code §65852.2 sets the statewide legal framework for ADU development, including approval timelines and baseline standards that all cities must follow. Together, these sources ensure compliance with both local and state regulations.