Local contractor in Norwalk, California

ADU/Jr ADU

ADU, Junior ADU, garage conversion, and additional living-space services for homes in Norwalk and surrounding cities.

ADUs and Garage Conversions

An accessory dwelling unit can create flexible living space for family, guests, rental use, a home office, or changing household needs. Gorilla Builders Inc. helps homeowners evaluate ADU, Junior ADU, attached addition, detached unit, and garage conversion options based on the property and the intended use.

Every property is different. Lot conditions, access, utilities, parking, existing structures, and local requirements can all affect the best approach. We help organize the project from early feasibility and planning through construction and finish work.

ADU Services

  • Detached and attached accessory dwelling units
  • Junior ADUs
  • Garage conversions
  • Bedroom, bathroom, kitchen, and living-area construction
  • Plumbing, electrical, HVAC, insulation, windows, and doors
  • Exterior finishes and connections to the existing property

Planning Your ADU Project

We start by learning how you want the space to function. Then we review the property, discuss the likely scope, and identify planning, design, engineering, permit, utility, and construction considerations. A clear scope helps avoid surprises and makes it easier to compare material and layout choices.

ADU Questions

Can an existing garage become an ADU?

Many garages can be evaluated for conversion, but the final approach depends on the structure, dimensions, access, utilities, and applicable requirements. A property review is the best first step.

Can you help with the entire project?

We can help coordinate the major stages, including planning, construction, building systems, and interior and exterior finishes.

Why Choose Gorilla Builders Inc.

  • More than 35 years of combined experience
  • Clear planning and direct communication
  • Attention to permits, materials, and details
  • Estimates tailored to the project scope

Local Service Area

Serving Norwalk, Downey, Bellflower, Cerritos, Whittier, La Mirada, Santa Fe Springs, and Lakewood.

View all of our services

Let’s Discuss Your Project

Tell us what you would like to build or remodel, and we will help you define the next steps.

Start My Estimate

(562) 465-0048