Davenport, IA Accessory Structures: Garage Conversions (2026)

Davenport zoning Chapter 17.08 lets a detached garage's ground floor be converted to an accessory dwelling unit, provided the minimum required off-street parking spaces remain on site; no additional parking is required for the ADU unless another ordinance requires it. Converting living space requires a building permit meeting habitable-space code: ceiling height, egress, ventilation, insulation, electrical, and plumbing. Iowa's climate calls for proper insulation. Converting an attached garage to general living space also requires a permit, and replacement parking may be required. The ADU size cap of 1,000 square feet applies.