Waukesha, WI Business Licensing & Operations: Auto Repair on Residential Property (2026)

58(5) of the zoning code lets homeowners run a home occupation or professional home office in any residential district without a conditional use permit, but only within tight limits: the business must stay incidental to the residential use and cannot take up more than 25% of the floor area of one floor, it cannot be run out of a garage or other accessory structure, only family members living in the home may work in it, and no stock in trade may be kept or sold except goods made on the premises.

Against that backdrop the code names the uses it will never treat as an allowed home occupation, and auto body or engine repair heads the list, alongside firearm sales or repair, ammunition sales, barbering, beauty shops, construction trades, dance studios, firewood processing, insurance agencies, pet sales and grooming, photographic studios, and real estate brokerages. A resident who wants to turn a garage into a repair bay or run a mobile mechanic business from a residential address cannot qualify under this section no matter how small the operation or how few customers visit.

58(6), Home Industries, a conditional use that requires a public hearing before the Plan Commission. That section lets the Commission approve a use barred as a home occupation, including one a neighborhood would find disruptive to allow by right, but only after finding the specific business will not disrupt the neighborhood, and it can restrict hours and days of operation to protect residential character. There is no guarantee an auto repair operation clears that bar; it is a discretionary, case-by-case approval, not a right.