Most affordable ADU market entry in Orange County, pre-approved "ADU Go" program for faster permitting, low vacancy rates (~5%), and strong blue-collar rental demand near major employment centers.
Garden Grove is one of the most affordable cities in Orange County for ADU investment, with a population of over 170,000 residents. The city launched its "ADU Go" pre-approved program, offering homeowners a streamlined path to ADU construction with pre-reviewed plans that significantly reduce permitting time. Garden Grove maintains low vacancy rates of approximately 5%, driven by strong blue-collar rental demand and diverse neighborhoods including Midway City and West Garden Grove. Its proximity to Disneyland employment and the broader Anaheim tourism economy provides a steady pipeline of renters seeking affordable housing options in a county where median rents continue to climb.
Contact the Building and Safety Division to determine if your property qualifies for the "ADU Go" pre-approved ADU program. Pre-approved plans can reduce your permitting timeline by several weeks.
Confirm your lot size, zoning classification, and setback dimensions. Measure the 6-foot building separation from your primary dwelling. Check utility connections and easement locations.
Choose from ADU Go pre-approved plans or create custom architectural plans. Custom plans must include site plan, floor plan, elevations, structural, MEP, and Title 24 energy calculations.
Submit your plans to the Building and Safety Division. Pre-approved ADU Go plans receive expedited review. Custom plans follow the standard 60-day state-mandated review timeline.
Once approved, pull your building permit and begin construction. Schedule required inspections at each milestone — foundation, framing, rough MEP, insulation, and final.
Request final inspection from the Building and Safety Division. Once passed, you receive your Certificate of Occupancy and your ADU is legal to occupy or rent.