How to Start a Commercial Cleaning Business: Contracts, Bidding, and Cash Flow

Commercial cleaning is the more profitable half of this trade and the harder one to start. Bigger contracts, longer terms, and revenue you can plan around. Also slower to win, and it will test your cash before it pays you.

If you are deciding between residential and commercial, start with the main guide. This page is the commercial-specific part.

The cash flow problem, first

This is what catches people, and it has nothing to do with cleaning.

Commercial clients pay on terms. Net 30 is standard, net 60 exists. You clean the building four times a week for a month, then wait another month to be paid.

Your labor is weekly. Your staff do not wait 30 days.

So a growing commercial cleaner needs cash to cover roughly six weeks of payroll before the first invoice lands. Win three contracts at once with no cushion and you will be profitable on paper and unable to make payroll.

How to survive it:

Start with one or two accounts and let the money cycle before adding more

Ask for a shorter term on your first contract. Some clients will agree to net 15 for a new vendor

Invoice the day the month closes, not a week later

Keep a reserve equal to a month of payroll before you take on a fourth account

What clients require before they will sign

Commercial buyers are procurement people, not homeowners. They have a checklist.

General liability insurance, with a certificate naming them as additional insured. They will ask for the certificate, not your word

Workers compensation, from your first employee, and often required in the contract regardless

A janitorial or fidelity bond, covering client losses from employee theft. Your crew has keys and after-hours access, so this comes up almost every time

Background checks on anyone entering the building

A W-9 and business registration in good standing

Get these before you bid, not after you win. Nothing kills a new vendor faster than "we will get that sorted."

How commercial bidding actually works

1. The walkthrough. You are shown the building. Count everything: total square footage, floor types, number of restrooms and fixtures, kitchens or break rooms, entrances, stairwells, and how much glass.

2. The scope. Ask what they want and how often. Daily, three times a week, weekly. Which tasks nightly versus which periodic, like floor stripping or carpet extraction. Get it specific, because vagueness is where money leaks.

3. Production rate. Estimate how many square feet per hour your crew cleans in this kind of space. Office is fast. Medical and industrial are slow. Restrooms and kitchens are slow everywhere. Derive this from your own jobs, not from an industry average.

4. Price it. Hours needed times your fully burdened labor cost, plus supplies consumed, plus profit. Then present it as a monthly figure, because that is how they budget.

5. Separate the periodic work. Strip and wax, carpet extraction, window cleaning, and post-construction are quoted on top, not buried in the monthly. That is where your margin lives and it protects you from doing them for free.

Where to find your first accounts

Small commercial is the way in. Large buildings use brokers and incumbents.

Start with:

Dental and medical practices, small clinics

Salons, gyms, and studios

Small offices, accountants, insurance agents, law offices

Churches and community buildings

Property managers with small multi-tenant buildings

How to approach them. Walk in during business hours, ask who handles the cleaning, and ask one question: are you happy with it. Most contracts turn over because of reliability, not price. Somebody stopped showing up, or the quality drifted after month three.

Leave something physical. Come back. Consistency in the sales process signals consistency in the service, and that is what they are actually buying.

The contract terms that matter

Put it in writing, every time:

Scope, task by task, with frequency

Term and renewal, typically twelve months with automatic renewal

Cancellation notice, 30 days is normal, and it protects both sides

Payment terms, and a late fee that you actually enforce

Price adjustment, an annual review clause, or you will be cleaning at your first-year price in year four while wages rise

Access and keys, who holds them and what happens if one is lost

Supplies, whether you provide consumables like paper and soap, and whether that is billed separately

That last one is worth attention. Paper goods and hand soap are a real recurring cost. Decide whether you supply them and price accordingly.

Staffing, because you cannot do this alone

Commercial work happens at night, across multiple buildings, on a schedule. You will hire sooner than a residential cleaner does.

Write your checklists before the first hire. Task by task, per building. That document is your training, your quality standard, and your defense when a client says something was missed.

Expect turnover. It is normal in this industry. Systems that let a new person be productive on night two are worth more than any single employee.

Start here

The formation steps, insurance, and bonding are covered in the main guide.

How to start a cleaning business, the full formation path

The Cleaning Business Starter Pack, the systems for this trade

Launch Package if you want the formation, website, and lead system built with you

General information, not legal or tax advice. Licensing, bonding, and insurance requirements vary by state.