Obtain price quotes from more than one plumber and compare the rates. Ask if the work is guaranteed and for how long
Ask the plumber if the company is insured against claims covering worker's compensation, property damage, and personal liability in the event of an accident
Confirm that the plumbing contractor is properly licensed and bonded before allowing them to work at the property
Advise the plumber of any history of wastewater problems
If the property has a long private service line (100' or more) ask the plumber if equipment will be adequate to rod the entire line
Most plumbers will charge extra for nights, weekends, and holidays
If You Need Additional Information
Ask friends and neighbors to recommend a plumber or ask the plumbers being considered for references and investigate
Call the local Better Business Bureau or consumer affairs office to help determine customer satisfaction with the plumbers being considered
Advise the plumber of any history of wastewater problems
If the property has a long private service line (100 feet or more) ask the plumber if equipment will be adequate to rod the entire line