Lake Forest's larger lots — especially in Foothill Ranch, Portola Hills, and the original Lake Forest neighborhoods — make it one of the better-suited South OC cities for backyard ADUs. As a Lake Forest-based contractor, ProHome handles detached ADUs, garage conversions, attached ADUs, and JADUs from initial design through permitting and construction.
As the city we're headquartered in, Lake Forest is where we've built the deepest familiarity with local lot sizes, setback requirements, and the city's ADU review process. Many Lake Forest properties — particularly in Foothill Ranch and Portola Hills — have backyards well-suited to a detached unit, while smaller-lot homes closer to El Toro often make more sense for a garage conversion or JADU. We help you figure out which option fits your lot before design work begins.
Full-scope ADU projects from design through final inspection. One licensed contractor managing architecture, permitting, and construction.
Standalone backyard units up to 1,200 sq ft, built to function as a complete home — bedroom, bathroom, kitchen, and living space. Ideal for Lake Forest's larger backyard lots, whether for family, a home office, or rental income.
Converting an attached or detached garage into a livable ADU — including new insulation, plumbing, electrical, and egress. A practical option for Lake Forest homes with a smaller backyard footprint.
An addition built onto the existing home with its own entrance, kitchen, and bathroom — sharing one or more walls with the main house. Often the most cost-effective way to add a self-contained living space.
Up to 500 sq ft, converted from existing space within the home's footprint — often a bedroom with an added kitchenette and separate entrance. The lowest-cost path to a legal second living unit on your Lake Forest property.
Architectural plans, structural engineering, and submission through the City of Lake Forest's ADU plan check process. California's streamlined ADU laws mean faster review than a standard addition — we manage the paperwork end to end.
Grading, utility trenching, and new or upgraded electrical, water, and sewer connections for your ADU — coordinated with the main home's existing systems so everything works together once construction wraps.
Lake Forest homeowners have plenty of contractor options. Here's what consistently sets us apart.
Our rating reflects clear scopes, honest pricing, and follow-through. Lake Forest homeowners who hire us know where their project is at all times — we reach out before they have to ask.
We manage the full ADU plan check and permitting process with the City of Lake Forest, including structural, electrical, plumbing, and utility approvals, and coordinate every inspection.
Our office is in Lake Forest — we're not driving in from out of the area. That means faster site visits, faster answers, and a contractor who's genuinely invested in how Lake Forest projects turn out.
No chasing us down for a status update. You get a named point of contact and regular check-ins throughout your project. Calls returned the same day. That's not a promise on paper; it's how every job runs.
What Lake Forest homeowners typically ask before starting an ADU project.
ProHome handles every trade in-house.
We serve all of Orange County.
Call us today or request a free on-site estimate. Detailed scope, transparent pricing, no pressure.