Introduction
Hacienda Heights is an unincorporated community in Los Angeles County, meaning ADU permits go directly through LA County’s Department of Regional Planning — not a city planning department. This is an advantage: county processing tends to be straightforward when plans are code-compliant. Uni Construction has extensive experience navigating the county’s ADU review process for Hacienda Heights homeowners.
Why Hacienda Heights Homeowners Build ADUs
Unincorporated = state law applies directly: No additional city-level restrictions. California’s ADU-friendly state law is your baseline, making it easier to build.
Generous lot sizes: Hillside and flatland properties alike often have 7,000–15,000+ sq ft lots with ample room for detached ADUs.
Multigenerational community: Hacienda Heights has a strong multigenerational culture. ADUs are a popular choice for housing aging parents or adult children.
Strong rental market: Close proximity to the 60 freeway and Industry gives renters easy commuting options, supporting $1,800–$2,500/month rents.
Local Permitting
Because Hacienda Heights is unincorporated LA County, permits are handled by the LA County Department of Public Works (Building & Safety Division). Plans must comply with Title 22 of the LA County Code in addition to state ADU law.
Neighborhoods We Serve
We serve all Hacienda Heights areas including homes near Hsi Lai Temple, Colima Road corridor, Stimson Avenue, Hacienda Boulevard, and the hillside neighborhoods along Skyline Drive and Turnbull Canyon.
Ready to build an ADU in Hacienda Heights? Contact us for a free feasibility report — we’ll evaluate your property and show you what’s possible. 213) 306-5601
