Detached ADU ConstructionDetached ADU Construction

Working with a professional detached ADU builder, you can expect ground-up construction in Los Angeles to start at approximately one hundred fifty thousand dollars. For a standard six hundred to eight hundred square foot detached unit, complete project costs typically range between one hundred seventy-five thousand and two hundred thirty thousand dollars. The final price varies based on site characteristics, utility trenching distances, and chosen finishes. As your general contractor, we provide a binding, all-inclusive quote after conducting a free property assessment, ensuring there are no unexpected pricing surprises during the build.

The complete timeline for detached ADU construction spans from ten to fourteen months. During this period, the design and engineering phase occupies four to six weeks, while the city plan check process through LADBS typically requires ten to sixteen weeks. Once permits are approved, the actual construction phase takes twelve to eighteen weeks. Some smaller jurisdictions like Culver City or Glendale may issue building permits slightly faster. As a dedicated detached ADU contractor, we coordinate every phase of the project to ensure a seamless transition from blueprints to final utility inspections.

California state regulations permit homeowners to construct a detached ADU up to twelve hundred square feet, regardless of the primary house size. However, the practical size you can build is often shaped by local setbacks, which require a four foot clearance from the rear and side property lines. We must also evaluate your yard's available space, utility access, and local lot coverage limits. During our initial feasibility assessment, our design team will analyze your property lines to establish the maximum possible dimensions for your new backyard cottage.

You do not need to replace existing parking if your property is located within a half mile of public transit, which applies to almost all residential lots in Los Angeles. If the construction of your new detached ADU requires demolishing an existing garage, local cities are prohibited from forcing you to build replacement parking spaces. This makes detached ADU construction much more affordable and simple. We will review your property's proximity to transit lines during our free consultation to confirm that you qualify for this parking exemption.

Our pricing is completely all-inclusive, meaning we manage every step of your project under one single contract. This covers initial site surveys, architectural plans, structural engineering calculations, and all city permit submission fees. It also includes full site preparation, foundation pouring, framing, utility hookups, and complete interior finishes such as flooring, cabinetry, and appliances. Working with a unified detached ADU builder means you do not have to coordinate between different designers and trades, saving you time, stress, and extra management costs.

Yes, building a two-story detached ADU is allowed in most Los Angeles residential zones. State and local guidelines permit a maximum height of sixteen feet, which can extend to eighteen feet in transit-rich areas. Constructing a two-story unit is an excellent way to preserve yard space, though it does require additional structural engineering and foundation support to meet building codes. As an experienced detached ADU contractor, we will guide you through the architectural tradeoffs and structural requirements during the initial design phase of your project.