Coon Rapids, MN Accessory Structures: ADU Rules (2026)

The Riverdale Station Transit District regulations in Section 11-904 are built around promoting a dense, walkable neighborhood near the Riverdale Station, per the intent language in Section 11-904.1. Section 11-904.6.Uses lists permitted, conditional and accessory uses for the district; among the accessory uses in Subsection (3), alongside customary accessory uses and outdoor seating tied to a food service business, the code lists 'Accessory dwelling units above garages' at Subsection 11-904.6(3)(b). Because it is classified as an accessory use rather than a principal or conditional use, an ADU above a garage does not require its own conditional use permit application, but any new development or redevelopment in the district, including one adding an ADU, still needs Station Area Plan approval under Section 11-904.4, which requires Planning Commission review and City Council approval before a building permit can issue, and individual site plans afterward must conform to that approved Station Area Plan under Section 11-904.5.

Section 11-904.2 makes clear these rules apply to new development and to alterations that change a property's use or intensity of use, so retrofitting an existing garage with living space above it in the district would trigger this process. This ADU allowance is specific to the Riverdale Station Transit District; the code does not list garage-apartment ADUs among the accessory uses for the general LDR-1, LDR-2, MDR or HDR residential districts covered in Chapter 11-600.