A flooded basement is not a situation you want to get home to and you ought to take care of that before you get a real problem on your hands. Do not expect a few bars at the basement door or putting some garments under it will solve the problem but getting a professional who knows what to do will save you. Basements which have not been made to resist water leakage are susceptible to mold growth and the people living in the house will be at risk a far as their health is concerned and this is not a situation you want to put your family through. A contractor who has done the type of work before should provide you with references you can use to ascertain that you will not be disappointed with the work the person will do. You will not be doing your bank account any justice when you are spending money on a contractor you are not sure can do the job to the standards you are expecting. Ask the contractors you are interviewing what they will give to make your time worthwhile. The response should demonstrate that the person is better than the other candidates.
You should expect great things from a person who is experienced in basement waterproofing compared to someone who has just handled a few projects. The experience level is an indication of the knowledge and skills of the person which makes sure you choose the responsibilities you assign the contractor well. If you are approaching the experience world in terms of just time, you are doing it all wrong. You need to know the number of projects the person has handled and how the end result was. You might find a contractor who got licensed ages ago but managed to get just a few contracts.
Ensure the person is licensed before you award the contract. The law is very clear about licensure of the basement contractors and if you find someone who is willing to work without going through the proper system to get a license, you should think twice before allowing them to your house. The services should come with a warranty because it is an assurance that you will not be throwing away your money only to have the same kind of a problem a few months later. The basement contractor should discuss the techniques he or she used in the project with you before moving ahead with the plans.