HomeAdd: Design-Build ADU and Home Addition Contractor in Woodland Hills, CA
HomeAdd is a design-build company headquartered in Woodland Hills, California, offering services across Los Angeles County, Orange County, and Ventura County. The company positions itself as a full-service ADU contractor and home addition builder, handling design, engineering, permitting, and construction under a single contract rather than passing clients between separate firms.
As an accessory dwelling unit builder, HomeAdd works on detached ADUs, garage conversions, JADUs, and above-garage units, alongside more traditional projects such as room additions, kitchen expansions, second-story additions, and primary suite additions. The company describes its detached ADU work as the path with the strongest state-level permitting protections in California, suited to homeowners looking for rental income or independent space for family members — functioning in practice as an in-law suite builder or backyard cottage builder depending on the layout.
For homeowners with an existing garage they no longer need, HomeAdd also works as a garage conversion contractor, converting the existing slab, walls, and roof into permitted living space by addressing structure, insulation, utilities, and finishes — generally presented as a lower-cost route to a permitted unit compared to new detached construction.
How Projects Are Structured
HomeAdd describes its process in four stages:
- Feasibility and site walk — reviewing setbacks, utilities, and zoning to determine what can be built.
- Design and written pricing — coordinated architectural drawings paired with an itemized budget.
- Permits and plan check — handling submissions to LADBS, LA County, and Orange County building departments.
- Build and handoff — a single project manager, weekly walkthroughs, and a documented closeout.
The company states it provides detailed written proposals with a defined scope and itemized allowances, along with a documented change-order process, rather than open-ended allowances that can lead to unexpected costs mid-project.
Service Area and Background
HomeAdd serves Los Angeles County (including the San Fernando Valley, Westside, and South Bay), Orange County (including Irvine, Newport Beach, Costa Mesa, and Anaheim), and Ventura County (including Thousand Oaks, Simi Valley, Camarillo, and Moorpark). The company states it works regularly with LADBS and with building departments across these three counties.
According to the company, HomeAdd began with home addition work for neighbors in the San Fernando Valley before expanding its focus toward accessory dwelling units as California's ADU regulations changed. The business states it restructured its operations around coordinated architecture and permit management under one contract, with project managers assigned to specific neighborhoods it builds in, including Woodland Hills, Tarzana, Encino, and Sherman Oaks.
HomeAdd offers an initial feasibility and pricing conversation at no cost, intended to give prospective clients an early read on what is buildable on their property before committing to design work.
