Welcome to the ultimate resource for building an accessory dwelling unit (ADU) in Los Angeles. Whether you’re a homeowner seeking flexibility for your family or an investor aiming to add value, our comprehensive guide has you covered every step of the way. Explore what’s possible on your property through in-depth information on ADU regulations, floor plans and a showcase of active and completed projects. You’ll also find ADU cost estimates, rental data and inspiring stories from other homeowners.