Garage Conversion in Ventura County & Los Angeles

Garage conversions with RnD Builders generally run $140,000 to $200,000. Larger garages, an added bathroom or kitchen, and site conditions can also run higher. The size of the garage, the layout and the finishes all affect the price, and your written estimate confirms the exact number before work starts.

A basic conversion can be completed in about 3 to 6 weeks, and extensive overhauls with a bathroom, kitchen or structural work can also take several months. Once your design is final, we set a timeline for your project and your project manager keeps you updated at every stage.

Yes. California ADU law encourages homeowners to convert an existing garage into living space, a rental unit or an extra room, as long as the work is permitted and meets building codes. RnD Builders also handles the legal steps, from plans and permit filing to final inspection.

Yes. A garage conversion turns a storage space into living space, so it needs a building permit and inspections for structural, electrical and safety code compliance. Skipping permits can lead to fines and problems when you sell. We also prepare the plans and manage the permit process with your city.

For a garage converted into an ADU, California law generally does not allow cities to require replacement parking. Rules can differ for other types of conversions and for specific areas, so we check your city requirements during design and plan around them before construction starts.

Often, yes. When the garage is converted and permitted as an ADU with its own entrance, kitchen and bathroom, California law does not allow local agencies to require owner occupancy for a standard ADU. Rules for rent and use still apply, and we help you understand what your city allows.

Yes. In addition, many homeowners convert a garage into a bedroom, office, gym or playroom with no kitchen at all. The permit path and design are different from a full ADU, so tell us how you want to use the space and we will recommend the right approach.

A garage is built for cars, so the conversion usually involves floor preparation, insulation, new electrical, heating and cooling, windows and doors, and finished walls and flooring. If you add a bathroom or kitchenette, plumbing is brought in as well. Your designer plans each step in the 3D model and written estimate.

Yes. Adding a bathroom or kitchenette usually means cutting the slab for drain lines, bringing in water and venting, and sometimes upgrading electrical capacity. These additions affect the price, so we price them separately in your written estimate and let you decide what the space needs.

In most conversions the garage door opening is framed in and replaced with a finished wall, windows, a pass-through window or French doors. Our Hawthorne conversion used a 10 foot French door with side light panels. We match the exterior finish so the change looks like it was always part of the house.

Yes. California requires a contractor license for any project that needs a building permit or totals $1,000 or more in labor and materials, and a garage conversion needs a permit. RnD Builders is a licensed general contractor, and you can verify any license on the CSLB website before you hire.

Your written estimate lists the scope and each selection, and we review what could change the job, such as an uneven slab or wiring that is not up to code. If something changes, you approve it in a signed change order before it is added to the contract.

It can. Added living space, a guest suite or a rental unit is attractive to many buyers and can also add to the long-term value of the property. The result depends on your market, the quality of the work and how the space is used, so we do not promise a specific return.

Ventura County is our main focus, such as Thousand Oaks, Newbury Park, Camarillo, Santa Rosa Valley, Oxnard, Ventura, Simi Valley and Moorpark. We also convert garages across Los Angeles County, including Westlake Village, Calabasas, Agoura Hills, Malibu, Woodland Hills, West Hills, Chatsworth, Northridge, Porter Ranch, Santa Clarita, Valencia, Pacific Palisades, Pasadena, Altadena, Hawthorne and the South Bay. Ask us if you are not sure we cover your address.