The difference between domestic cleaning and commercial cleaning can be as big as the difference between night and day. Here are some of the reasons why this is so:
When it comes to the commercial type of cleaning, the work being done is regarded as indispensable for the proper running of the business. Due to this factor it becomes a business expense. All business expenses are factored into a budget which must balance at the end regardless of any unforeseen expenses that might occur. This leaves no room for extras or overspending. So the cost of hiring a company to clean the offices is pretty much inflexible. It has to be either the same amount or less than what was allocated for that purpose.
The situation is quite different when it comes to domestic cleaning. Here it is entirely up to the homeowner whether they want to tackle the project of cleaning their property themselves or shells out the money to have someone else do it. At any rate, while there may be a budget, it is by no means as rigid as the one a business produces, so there's some room for maneuvering when it comes to expense. Also, the type of work a private homeowner requires from a company which does domestic type cleaning is quite different from what a business would need from a company that does commercial cleaning. Plus the scale of such cleaning is normally larger than what it would be in a home.
While a home owner would have certain expectations of the service they hired to do their cleaning, the type of expectations from a business can be very strict and depend upon the type of business you are dealing with. If the building to be cleaned has offices used for professional purposes, it is usually enough for the commercial cleaners to do a thorough vacuuming of the carpets, empty the wastebaskets, and disinfect and clean the bathrooms. Normally those doing the cleaning would not be expected to do more than a perfunctory dusting because in an office people do not want their desks with paperwork and files and most important of all their computer touched.
If the commercial cleaners are providing services for the entire building, rather than just some of the offices, then they can be required to wash and clean the floors, even polish them if they are made of wood. In general an overall atmosphere of pristine cleanliness will probably demanded by the owners of the building. Commercial cleaners work harder and longer, than those doing domestic work, but they are also paid better. Then again, maintaining a commercial enterprise is more expensive than running a domestic type of cleaning service.
A home owner's demands would be for dusting, vacuuming, disinfecting of the bathroom, etc. They would most likely take care of some things themselves, like the curtains, shades, etc. So basically a company doing domestic type cleaning can expect to receive less money for their services than a company doing commercial type cleaning.