#1 ADU Contractor in West Covina
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Finding a qualified adu contractor in West Covina means working with someone who understands both state law and the realities of the local housing stock. California consolidated its ADU statutes into Government Code sections 66310 through 66342 in 2024, and those rules were updated again on January 1, 2026. Under the current framework, square footage is measured as interior livable space, and a local agency has 15 business days to determine whether an application is complete and 60 days to approve or deny it. Approval is ministerial, meaning no public hearing and no discretionary design review stands between a complete application and a permit.

In West Covina, that application goes to the City of West Covina, which issues building permits for all work inside city limits. No unusual local overlay applies here, so what governs your project is primarily the state building code and the age of your home. That is a straightforward permitting environment compared to some surrounding jurisdictions. Los Angeles County has 88 incorporated cities, and the rules and the counter change from one to the next even when state law stays constant, so confirming the specific agency matters on every project.

The county’s own ADU ordinance, which covers unincorporated territory rather than the cities, was found non-compliant with state law by the California Department of Housing and Community Development in December 2025. Among other findings, it caps detached ADUs on multifamily lots at two where state law allows up to eight. West Covina is not governed by that ordinance, but the situation is a useful reminder that a local handout is not always current with the statute.

The lot itself decides much of the rest. West Covina grew more than tenfold during the 1950s, and the overwhelming majority of homes here are single-story postwar tract houses on suburban lots. Those properties were typically built with a walled-off kitchen separate from the living and dining areas, which shapes where a detached unit can physically sit, how far utilities have to run, and whether a garage conversion or a new detached structure makes more practical sense. We walk the parcel first, checking setbacks, grade, equipment access, and utility routes before a single line is drawn.

State law sets a floor of protections regardless of which city a parcel sits in. A local agency cannot cap an ADU below 850 square feet of interior livable space, or below 1,000 square feet if the unit has more than one bedroom. Side and rear setbacks cannot exceed four feet. Owner-occupancy cannot be required as a condition of building an ADU. Adding a unit cannot trigger a fire sprinkler retrofit of the main house. And there are no impact fees on a unit of 750 square feet or less. These protections apply to your West Covina property today.