Accessory Dwelling Units are becoming a practical solution for homeowners who want more space without major remodeling. Backyard ADUs can serve as rental units, guest houses, private offices, or long-term family housing. What makes these projects successful is proper planning—layout design, structural engineering, zoning compliance, and permit preparation all need to align from the start. Many homeowners underestimate how much local knowledge matters during this phase. Working with experienced ADU builders helps avoid repeated document revisions and delays, especially when city requirements vary by location. When the process is managed correctly, ADUs offer flexibility, privacy, and long-term value without disrupting the main home.я