ADU Conversion Planning in Seattle and the Eastside

An ADU conversion starts with zoning, code, and utility checks. Ceiling height, egress, fire separation, and parking rules can shape layout options early. Budget should include design, permitting, utility upgrades, and finish scope. Many projects underestimate electrical and HVAC modifications needed for independent living use. A strong ADU plan balances rental goals with operating cost. Durable finishes, smart storage, and efficient systems reduce maintenance over time.