Chapter 55 Unified Development Code
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Code of Ordinances City of Ann Arbor, Michigan Chapter 55 Unified Development Code Adopted: July 16, 2018 With Amendments Through: February 14, 2021 Supplement History Table Ordinance No. Date Adopted Effective Date ORD-18-06 7-16-2018 7-26-2018 ORD-18-20 8-23-2018 10-31-2018 ORD-18-22 8-23-2018 11-4-2018 ORD-19-15 6-3-2019 6-16-2019 ORD-19-16 6-3-2019 6-16-2019 ORD-19-17 7-1-2019 7-21-2019 ORD-19-26 8-19-2019 9-22-2019 ORD-19-27 9-3-2019 9-22-2019 ORD-19-28 9-3-2019 9-2019 ORD-19-32 10-7-2019 10-27-2019 ORD-19-34 11-4-2019 11-17-2019 ORD-20-18 6-6-2020 7-19-2020 ORD-20-27 12-7-2020 12-20-2020 ORD-20-30 12-21-2020 1-10-2021 ORD-20-33 1-4-21 1-31-2021 ORD-20-34 1-19-21 2-14-2021 ORD-20-35 1-19-21 2-14-2021 With Amendments Through: February 14, 2021 Page 2 Chapter 55 ............................................................................................................................ 10 Ann Arbor Unified Development Code .......................................................................... 10 Article I: General Provisions ............................................................................................ 10 5.1 Authority ...............................................................................................................................10 5.2 Title ........................................................................................................................................10 5.3 Effective Date .......................................................................................................................10 5.4 Purpose ..................................................................................................................................10 5.5 Applicability .........................................................................................................................10 Required Conformity to District Regulations.................................................... 10 Exceptions .................................................................................................................. 11 Liability ....................................................................................................................... 11 5.6 Applicability of Other Regulations .................................................................................12 Intent ........................................................................................................................... 12 Other Applicable Codes ........................................................................................... 12 5.7 Relationship to Private Agreements ..............................................................................12 5.8 Severability ...........................................................................................................................13 5.9 Repeal of Previous Regulations .......................................................................................13 Repeal .......................................................................................................................... 13 Violations of Previous Regulations ...................................................................... 13 Article II: Zoning Districts ............................................................................................... 14 5.10 General ..................................................................................................................................14 Classification of Districts ........................................................................................ 14 Zoning District Boundaries Shown on the Zoning Map ................................. 14 Interpretation of the Zoning Map......................................................................... 14 Relationship of Base and Overlay Zoning Districts ......................................... 14 5.11 Residential Zoning Districts ............................................................................................15 AG Agricultural-Open Space District ................................................................. 15 R1A, R1B, R1C, R1D and R1E Single-Family Dwelling District ................ 15 R2A Two-Family Dwelling District .................................................................... 15 R2B Two-Family Dwelling and Student Housing District ............................ 16 R3 Townhouse Dwelling District ......................................................................... 16 With Amendments Through: February 14, 2021 Page 3 Contents R4A Multiple-Family Dwelling District............................................................. 16 R4B, R4C, R4D, and R4E Multiple-Family Dwelling Districts ................... 16 R6 Mobile Home Park District ............................................................................. 17 5.12 Mixed Use Zoning Districts ............................................................................................17 O Office District ........................................................................................................ 17 C1 Local Business District ...................................................................................... 17 C1A Campus Business District .............................................................................. 18 C1B Community Convenience Center ................................................................. 18 C1A/R Campus Business Residential District ................................................... 18 D1 and D2 Downtown Districts ........................................................................... 18 C2B Business Service District ................................................................................ 19 C3 Fringe Commercial District ............................................................................. 19 5.13 Nonresidential and Special Purpose Zoning Districts ...............................................19 R5 Hotel District ...................................................................................................... 19 P Parking District .................................................................................................... 19 PL Public Land District .......................................................................................... 19 RE Research District ............................................................................................... 20 ORL Office/Research/Limited Industrial District ........................................... 20 M1 Limited Industrial District .............................................................................. 21 M1A Limited Light Industrial District. .............................................................. 21 M2 Heavy Industrial District ................................................................................ 22 Planned Unit Development (PUD) District ....................................................... 22 5.14 Overlay Zoning Districts ..................................................................................................22 Downtown Character Overlay Zoning Districts ............................................... 22 Floodplain Management Overlay Zoning District ........................................... 25 Article III: Use Regulations ............................................................................................. 32 5.15 Permitted Use Tables ........................................................................................................32 Use Tables .................................................................................................................. 32 Primary Uses ............................................................................................................. 33 Accessory Uses .......................................................................................................... 44 Temporary Uses ........................................................................................................ 47 5.16 Use Specific Standards .......................................................................................................48 Residential Uses ........................................................................................................ 48 With Amendments Through: February 14, 2021 Page 4 Contents Public/Institutional Uses........................................................................................ 51 Commercial Uses ...................................................................................................... 53 Office/Research Uses ............................................................................................... 62 Industrial Uses .......................................................................................................... 63 Accessory Uses and Structures .............................................................................. 68 Temporary Uses ........................................................................................................ 77 Article IV: Development Standards ................................................................................ 79 5.17 Area, Height and Placement Regulations .....................................................................79 Intent ........................................................................................................................... 79 General Requirements ............................................................................................