Only deal with contractors that are licensed to work in your state. The installation of siding is usually regulated at the local level, so you should check with your local government offices. They will be able to tell you what credentials you should look for with a contractor. Never try to take a shortcut by hiring a non-licensed contractor. You will generally get lower quality work and you will have less legal recourse against a non-licensed contractor.

Find reviews for any contractors you consider hiring. When you hire a contractor you've never worked with before, you are taking a big risk. The contractor could be highly unprofessional or have a history of overcharging clients. Reviews will help give you a better idea of the person or company you are dealing with. This is convenient and can end up saving you a lot of time and hassle.

Always ask for an estimate before you let anyone start working on your home. This estimate will just serve to give you a general idea of what you can expect to pay. You can use the estimate to help keep your contractor on budget if things start getting to expensive.