Maricopa County, AZ Business Licensing & Operations: Auto Repair on Residential Property (2026)
Key Facts
- Outdoor mechanical work
- Prohibited
- Toxic/flammable materials on site
- Prohibited
- Commercial vehicles allowed
- One, in enclosed garage
- Non-resident employees cap
- 3 (family exempt)
- Customers on premises
- Max 5 at a time
- Non-resident business hours
- 7:00 a.m. to 10:00 p.m.
Summary
Running an auto repair business from a home in unincorporated Maricopa County is boxed in tight: no power tools or mechanical work outdoors, no toxic or flammable fluids stored on site, and only one commercial vehicle, kept in an enclosed garage.
3. The business shall be conducted entirely within a completely enclosed building, other than allowance for limited outdoor storage per item `14' below. Physical business activity other than storage may occur within the area described per item `14' below except that no mechanical equipment or power tools shall be operated out of doors... 6. No mechanical equipment or power tools shall be used, except that used for normal household purposes if the noise would be considered to have an adverse impact on the surrounding residential neighborhood per the Maricopa County Noise Ordinance. 7. No toxic, explosive, flammable, radioactive, or other similar material shall be used, sold, or stored on the site. 9. Unless a passenger vehicle accessory to the residence or an employee, not more than one vehicle used in commerce shall be permitted in connection with the home occupation. Said vehicle shall be stored in an enclosed garage.
Full Breakdown
9 of the Zoning Ordinance apply to any residence-based business, including a home mechanic's operation, and several clauses specifically foreclose the kind of outdoor wrenching and fluid storage an auto repair business needs. " A second, separately numbered clause reinforces the point for noise: "no mechanical equipment or power tools shall be used, except that used for normal household purposes," if it would create an adverse noise impact on the surrounding residential neighborhood under the county Noise Ordinance. " Vehicle storage is capped too: "unless a passenger vehicle accessory to the residence or an employee, not more than one vehicle used in commerce shall be permitted in connection with the home occupation," and that vehicle "shall be stored in an enclosed garage" rather than parked in a driveway or yard.
m. Together these clauses rule out a functioning home auto-repair shop that does bodywork, fluid changes, or engine work outdoors, or that stores parts vehicles or customer cars outside a garage.
Violations & Fines
Operating power tools or performing mechanical work outdoors, storing motor oil, solvents, or other flammable automotive fluids on the property, or keeping more than one commercial vehicle outside an enclosed garage in connection with a home business are each violations of Article 603.9 enforceable by Maricopa County Planning and Development code enforcement.
Frequently Asked Questions
Can I fix cars in my driveway as a home business in Maricopa County?
Can I store motor oil or brake fluid for a home auto repair business?
How many work vehicles can I keep at a home-based repair business?
How many customers can visit a home auto repair business at once?
Sources & Official References
Other rules in Maricopa County
Compare Maricopa County to another location·View the Arizona business licensing & operations overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.