A commercial cleaning company, often called janitorial services, cleans workplaces, usually after hours, on monthly contracts. One office or clinic account can be worth more than several homes, and contracts make revenue predictable.
It’s part of the cleaning services industry. The Bureau of Labor Statistics counted about 2.4 million janitors and building cleaners in 2024, and businesses always need the work done.
Who it suits
Organized operators who like systems and are comfortable with sales, bidding and supervising a team you won’t always see.
Startup costs
Commercial-grade vacuums and floor equipment, supplies, a vehicle, insurance and bonding, and cleaning software for scheduling and quality checks. Many clients also ask for proof of insurance and workers’ compensation before signing.
How to win your first accounts
Start with small offices, medical and dental clinics, gyms, churches and retail shops near you. Walk in, ask who handles cleaning, and offer a free walkthrough and quote. Property managers can bring several buildings at once. Low-cost janitorial franchises exist too, but compare their fees against building your own client list.
Bidding and pricing
Walk every building. Estimate the hours needed from the square footage, floor types, restrooms and frequency, then add supplies, overhead and profit. Put the cleaning scope in writing as a checklist attached to the contract.
Quality control is the business
Clients rarely see you working; they only notice what’s missed. Use checklists, spot inspections and a fast way for clients to report problems. Most accounts are lost over small, repeated misses.
Watch out for
Underbidding to win contracts, staff turnover, and contracts with long payment terms. Invoice monthly and know your cash flow.
Last reviewed October 17, 2026. Startup costs are estimates; check local prices, licensing and tax rules before you commit money.
