Introduction
Rowland Heights is an unincorporated community in Los Angeles County located just south of Diamond Bar. Like Hacienda Heights, ADU permits here go through LA County rather than a city government. Uni Construction is headquartered minutes away in Diamond Bar, making us the most convenient and experienced ADU design firm serving Rowland Heights homeowners.
Why Rowland Heights Homeowners Build ADUs
Large residential lots: Many Rowland Heights properties have 7,000–12,000+ sq ft lots, giving you flexibility to build a full 1,200 sq ft detached ADU.
County permitting = no city overlay: Unincorporated status means California state ADU law applies directly with no additional city-level restrictions.
Strong Asian-American community: Multigenerational living is a cultural norm. ADUs provide the privacy and independence families need while staying on the same property.
Rental income potential: Rowland Heights’ proximity to the 60 freeway and Puente Hills Mall area supports rental rates of $1,800–$2,500/month for a well-designed ADU.
Local Permitting
Rowland Heights ADU permits are processed through LA County’s Department of Public Works (Building & Safety). Plans must comply with LA County Title 22 zoning and state ADU law. The standard 60-day review timeline applies.
Neighborhoods We Serve
We serve all Rowland Heights areas including Pathfinder Road corridor, Colima Road, Nogales Street, and the residential neighborhoods near Schabarum Regional Park and Pathfinder Park.
Ready to build an ADU in Rowland Heights? Contact us for a free feasibility report — we’ll evaluate your property and show you what’s possible. 213) 306-5601
