Accessory Structures in Fitchburg, WI (2026)
2 verified accessory structures rules for Fitchburg, Wisconsin, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Fitchburg permits 'dependency living arrangements' (ADUs) as a conditional use in R-L Low Density and other residential districts under §22-57. The accessory unit may not exceed 750 sq ft, one of the two units must be owner-occupied, and at least one interior doorway must connect the units. Separate front entrances are prohibited unless required for handicapped accessibility. Authority: Wis. Stat. §62.23.
accessory-structures/adu-rules
Some RestrictionsShed Rules
Fitchburg permits residential storage sheds up to 400 square feet in floor area and 15 feet in height, with a minimum 4-foot setback from any side or rear lot line and the principal-structure front-yard setback. A Deck and Shed Permit is required for any shed 64 square feet or larger; sheds smaller than 64 square feet are permit-exempt but must still meet setback and lot-coverage rules.
Shed Rules in Fitchburg
Few RestrictionsLooking for Dane County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Fitchburg city rules.
Accessory Structures in Dane County →