Janitorial service usually means routine, recurring cleaning and upkeep of an occupied building, such as nightly trash, restrooms, floors and dusting done on a fixed schedule. Commercial cleaning is the broader umbrella for any cleaning of non-residential property, which includes janitorial work and also one-time or specialty projects. In everyday use the terms overlap heavily. What matters to a buyer is not the label but the written scope: which tasks, which areas, how often.
Where the terms come from
The U.S. government classifies cleaning businesses under the NAICS code 561720, "Janitorial Services," which covers establishments cleaning building interiors, including offices and other commercial buildings. The Bureau of Labor Statistics describes janitors and building cleaners as workers who keep buildings clean and in orderly condition, often performing routine tasks and, in some cases, minor maintenance.
"Commercial cleaning" is a marketing term more than an official category. Companies use it to distinguish themselves from residential cleaning and to include services beyond routine janitorial work.
How they differ in practice
| Janitorial service | Commercial cleaning (broad sense) | |
|---|---|---|
| Focus | Routine, recurring upkeep | Any non-residential cleaning |
| Frequency | Daily, nightly or several times a week | Recurring, periodic or one-time |
| Typical tasks | Trash, restrooms, dusting, vacuuming, mopping, breakrooms, entries | Janitorial tasks plus project and specialty work |
| Contract style | Ongoing service agreement | Ongoing agreements or project quotes |
| Staffing | Assigned crews on a set schedule | Varies by job |
| Minor upkeep | Sometimes, such as lamp changes and reporting issues | Depends on provider |
In other words, all janitorial service is commercial cleaning, but not all commercial cleaning is janitorial service.
Why the distinction matters to buyers
Comparing proposals
If one vendor quotes "janitorial service" and another quotes "commercial cleaning," they may be pricing different things. One might include only routine tasks, another might bundle periodic deep work. Always compare written scopes line by line. Our guide to what is included in janitorial service lists typical tasks.
Finding the right provider
Some companies marketing "commercial cleaning" are primarily carpet or specialty cleaners who do not offer nightly service. Others are residential cleaners branching into offices. If you need recurring nightly care, look specifically for providers built around janitorial programs, with assigned crews, checklists and supervision.
Avoiding scope gaps
"We do commercial cleaning" says nothing about restrooms on Friday nights, breakroom refrigerators or who reports a leaking faucet. Scope documents close those gaps.
Related terms you will see
- Custodial services: often used in schools and public institutions; essentially janitorial service.
- Facility services: a broader term that can include cleaning, maintenance, security and other building support. See facility maintenance vs facility management.
- Day porter: a cleaner stationed in a building during business hours.
- Deep cleaning: periodic detailed cleaning beyond the routine scope.
- Disinfection: using an EPA-registered product according to its label to kill specified germs on surfaces. See cleaning vs sanitizing vs disinfecting.
More definitions are in our commercial cleaning glossary.
How Northmark uses the terms
At Northmark, commercial cleaning is our umbrella service page and commercial janitorial services describes our recurring nightly and multi-night programs. In both cases we focus on routine, scheduled care of occupied commercial buildings, with written scopes, background-checked staff and supervisor QA. We do not offer specialty project services such as post-construction cleanup or restorative floor work, and we say so rather than blurring the terms.
For mixed-use buildings that combine offices with shops or warehouses, see facility cleaning.
Which do you need?
Ask yourself:
- Do you need the building cleaned on a recurring schedule? You need janitorial service.
- Do you need a one-time or periodic project? You need a commercial cleaning provider who offers that project type.
- Do you also need upkeep and condition reporting? Look for a facility services provider.
For frequency guidance, see how often an office should be cleaned.
Frequently asked questions
Is janitorial service the same as commercial cleaning?
They overlap. Janitorial service is routine, recurring cleaning of occupied buildings. Commercial cleaning is the broader term for any non-residential cleaning, including janitorial work and one-time projects.
What does a janitorial service do?
Typical janitorial tasks include trash and recycling removal, restroom cleaning, dusting, vacuuming, mopping, breakroom cleaning and entry care, performed on a fixed schedule.
Is custodial service different from janitorial service?
Not meaningfully. "Custodial" is commonly used by schools and public institutions for the same routine building cleaning.
How do I compare janitorial and commercial cleaning quotes?
Compare written scopes line by line, including tasks, areas and frequencies, plus the labor hours each price assumes.
Sources
Published · Northmark Facility Services.