Pressure Washing Permit Requirements in St. Louis, MO

Complete permit and license guide for starting a pressure washing in St. Louis, St. Louis City County, Missouri.

$150 -- $750 1–3 weeks to obtain all required licenses and insurance 6 requirements

Not legal advice. Requirements may change — always verify with your local government authority before applying. Last verified: .

St. Louis / St. Louis City County Requirements

3 requirements
1

St. Louis Business License

All businesses operating in St. Louis must obtain a general Business License from the St. Louis City Clerk's Office before conducting any commercial activities. Pressure washing companies must renew annually and may be subject to gross receipts-based fees.

$25–$100/year1–3 weeks
Official government source
2

Stormwater / Wastewater Discharge Compliance

Pressure washing businesses in St. Louis must comply with local stormwater ordinances. Wastewater containing detergents, oils, or other pollutants cannot be allowed to enter storm drains. You may need to contain and properly dispose of wastewater. Contact St. Louis City County Environmental Health for specific requirements.

No permit fee (compliance requirement)Ongoing compliance
Official government source
3

DBA (Doing Business As) Registration

If operating under a trade name, file a Fictitious Business Name with St. Louis City County before accepting jobs under that name.

$15–$501–2 weeks
Official government source

Missouri State Requirements

2 requirements
1

Missouri Retail Sales License

Required for businesses selling tangible personal property in Missouri. Register with the Missouri Department of Revenue.

Free1–2 weeks
Official government source
2

General Liability Insurance

Pressure washing businesses in Missouri should carry general liability insurance ($1M minimum per occurrence) to cover property damage. Most commercial clients and property managers require proof of insurance before hiring. Vehicle insurance is also required if using a company vehicle.

$500–$1,500/yearSame day (online quotes)
Official government source

Federal Requirements

1 requirement
1

EIN (Employer Identification Number)

Required if you have employees or operate as an LLC/corporation. Free from the IRS.

FreeImmediate (online)
Official government source

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