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Council updates accessory-dwelling-unit code to align with state law; clarifies inspections and permit requirements
Summary
Council adopted changes to ADU definitions and requirements to reflect state law allowing detached ADUs, added standards for inspecting previously constructed ADUs, and clarified building/permitting and septic review responsibilities.
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Woodland Hills City Council on March 4 adopted ordinance changes to the city zoning code to conform to recent state changes on accessory dwelling units (ADUs). The amendments add definitions for detached ADUs, allow ADUs outside single-family dwellings when state law permits, and spell out inspection and permitting standards for both new and previously constructed ADUs.
Staff said the state now permits detached ADUs and that the city’s code needed updates to reflect the change. The ordinance includes a new definition for ADU and a new definition for “wall” (retaining wall) in the zoning code. Wayne (city staff) told council that external ADUs require a site plan and building permit and must meet applicable setback requirements and building codes.
Council and staff discussed how to treat ADUs that were constructed without permits. The ordinance requires that ADUs created without a building permit comply with minimum health-and-safety standards before being approved as legal ADUs. Staff explained those minimum standards include smoke detectors for each bedroom, required GFCI protection at required outlets, and having a separate address or entrance as required by state ADU guidance. The city’s building official noted that unpermitted basements and similar finished spaces often cannot receive a full building inspection unless a remodel permit is applied for, because many elements (wiring, nail plates, insulation) are concealed.
Council clarified permitting and inspection practice: if an owner finishes a basement and later applies to convert it to an ADU through a remodel permit, the city inspects the work against current building codes and requires corrections necessary for safety. ADUs that are occupied as a business or rented are subject to annual license renewal; staff said ADU-related licenses must be renewed yearly and the city inspects at renewal when changes are proposed.
The ordinance (agenda item 28) passed on a recorded vote. Council directed staff to ensure that septic-system approval (county-level) and parking impacts are included in the ADU application checklist; staff said the county must provide a letter verifying septic adequacy when additional bedrooms or bathrooms are added.

