Attached ADU

An attached accessory dwelling unit connects to your home and gives you more usable space. It’s a great way to add a living area without losing your backyard. With a shared wall or roofline, it often costs less than building a separate unit. Homeowners across California are using this option to add flexible living space while keeping construction simple.

Getting an ADU permit is complicated, especially with zoning rules and construction codes that vary by city. We take care of the details. ADU Scale handles your feasibility analysis, design, permitting, and project planning - so you don’t have to.

We focus on attached ADUs Los Angeles and throughout California’s counties. Our team understands local codes and works with trusted partners to keep your project smooth, on time, and on budget.

Since the attached secondary residence integrates with your home, it can often be connected to existing plumbing, electrical, and HVAC systems - reducing both cost and build time. In many cases, fire separation requirements and property line setbacks are more flexible for attached units than detached ones. This can be especially useful on narrow or sloped lots common in areas like Los Angeles.

Attached ADUs are also ideal for future-proofing your home. Many homeowners build them as flexible-use spaces - starting as a home office or guest suite, then transitioning to a rental or in-law unit as needs change. We help you plan for both your present and your future with smart design and expert guidance tailored to California’s evolving ADU regulations.