Accessory Structures in Rochester, MN (2026)
5 verified accessory structures rules for Rochester, Minnesota, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Rochester expanded ADU allowances to address housing demand from Mayo Clinic workforce growth. ADUs permitted in most residential zones. The Destination Medical Center project drives housing pressure.
Rochester ADU / Accessory Dwelling Rules
Some RestrictionsShed Rules
Rochester allows small sheds without permits (typically under 120 to 200 sq ft). Larger structures need building permits. Setback requirements apply.
Rochester Shed & Outbuilding Rules
Few RestrictionsGarage Conversions
Rochester may allow garage conversions with permits. Minnesota has no statewide garage conversion mandate. Replacement parking and insulation required.
Rochester Garage Conversion Rules
Some RestrictionsCarport Rules
Rochester requires permits for carport construction. Setback requirements, height limits, and lot coverage maximums apply.
Rochester Carport Construction Rules
Some RestrictionsTiny Homes
Rochester regulates tiny homes differently based on whether they are on a permanent foundation or on wheels. Zoning and minimum square footage requirements apply.
Rochester Tiny Home & Small Dwelling Rules
Some RestrictionsLooking for Olmsted County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Rochester city rules.
Accessory Structures in Olmsted County →