Traditional inspection methods do not reveal problems with sewer lines. Even when every bathtub is filled and drained and the dishwasher drains it does not put enough water down the line to reveal a blockage. You will find it after you move in and start using the washing machine. Or we can locate it now with a fiber-optic camera.
Another problem that can be detected with the fiber optic camera is a break in the sewer line that may be under the slab. A break in the line will allow sewage to leak under the slab and will damage the foundation and could contaminate the water supply. These types of breaks often go undetected for years and lead to catastrophic deterioration of the foundation.