Choosing the right Accessory Dwelling Unit (ADU) builders is one of the most important decisions when planning a backyard home, guest house, or rental unit. Start by looking for builders with proven experience in ADU construction, a strong portfolio, and positive customer reviews. Make sure they understand local zoning regulations, permit requirements, and building codes to help avoid costly delays. Ask about their design process, construction timeline, material quality, and pricing transparency before signing a contract.