It depends on the severity of the situation. If you have the equipment, manpower, knowledge, the willingness to dry the space, and the incident is minor, then you should consider doing it yourself. Keep in mind that water has an amazing ability to wick and travel throughout a structure. What you thought was merely a wet floor, can also mean wet walls, or wet space below the floors. If not properly dried, you may have to deal with mold issues in just a short time.