How to Legalize an Unpermitted ADU in Los Angeles Using AB 1033

Many homeowners want to legalize unpermitted ADU Los Angeles units that were built years ago without permits. AB 1033 allows cities to establish standards that provide a clear path toward compliance.

To legalize unpermitted ADU Los Angeles properties homeowners typically need to address electrical safety plumbing ventilation and structural integrity. Required upgrades often include smoke and carbon detectors GFCI and AFCI protection proper drainage and utility separation.

Statewide construction standards are governed by the California Building Standards Commission
https://www.dgs.ca.gov/BSC

Research published by UCLA ADU Research shows that legalizing existing ADUs improves housing stability and increases property value across Los Angeles neighborhoods
https://ucla-luskin-hirschman.github.io

Working with a contractor who specializes in legalizing unpermitted ADU Los Angeles units ensures inspections and corrections are handled correctly. An experienced builder can guide homeowners through compliance reviews and final approvals.

Start by visiting our ADU legalization services page or schedule an ADU inspection through our contact page to speak with a knowledgeable Los Angeles ADU builder.