Illegal ADU legalization is giving Los Angeles homeowners a new opportunity to legalize unpermitted accessory dwelling units (ADUs) and junior accessory dwelling units (JADUs) built before 2020 under a simplified approval process.
The Los Angeles Department of Building and Safety (LADBS) announced on July 20 that, under California Assembly Bill 2533 (AB 2533), it has launched a streamlined permitting program for eligible unpermitted ADUs and JADUs constructed before Jan. 1, 2020.
The program is expected to benefit many homeowners who converted garages into rental units or divided existing homes into separate living spaces without obtaining permits.
Illegal ADU legalization program lowers barriers
The biggest change under the new program is the elimination of penalties and development impact fees that were previously imposed when legalizing unpermitted residential units. In addition, applicants are no longer required to fully comply with every current building code before receiving approval, significantly reducing the hurdles to legalization.
Eligible properties include detached backyard units, garage conversions, and independent living spaces created by subdividing an existing single-family home, provided they were built before Jan. 1, 2020.
To qualify, homeowners must provide documentation proving the unit existed before the cutoff date. Acceptable records include lease agreements, construction receipts, utility bills, property appraisals, or other supporting evidence.
Pre-inspections can reduce costs
Under the new process, homeowners may hire a licensed private inspection agency to evaluate the property before submitting an application to the city.
The pre-inspection allows owners to identify necessary repairs in advance, helping reduce unnecessary delays and unexpected expenses during the permitting process.
However, not all fees are waived. While penalties and development impact fees are exempt, applicants must still pay standard building permit and inspection fees. ADUs larger than 500 square feet are also subject to school facility fees charged by the Los Angeles Unified School District (LAUSD).
Safety requirements remain mandatory
Although the city has relaxed certain code compliance requirements, life-safety standards remain mandatory before a final certificate of occupancy can be issued.
Homeowners must correct hazards such as electrical faults, gas leak risks, structural deficiencies, inadequate fire safety measures, and the absence of emergency escape windows.
On the other hand, buildings constructed before Jan. 1, 2020, may still qualify even if they do not fully meet current zoning regulations or setback requirements. Under the new rules, the city may recognize existing conditions instead of requiring owners to bring every aspect of the structure into compliance with today’s standards.
The Illegal ADU legalization program is designed to encourage homeowners to bring older unpermitted housing units into compliance while improving safety and expanding the city’s legal housing supply.
