How to Select a Radon Contractor

The EPA's Consumer's Guide to Radon Reduction provides the following guidelines for radon mitigation: Get Estimates Choose a contractor to fix a radon problem just as you would choose someone to do other home repairs. It is wise to get more than one estimate, to ask for references, and to contact some of those references to ask if they are satisfied with the contractor's work. Also, ask your state radon office or your county/state consumer protection office for information about the contractors. Find your state radon office by going here and clicking on your state.

Look for the following behaviors by the contractor and ask the following questions.

• Will the contractor provide references or photographs, as well as test results of before-and-after radon levels of past radon reduction work?
• Can the contractor explain what the work will involve, how long it will take to complete, and exactly how the radon reduction system will work?
• Does the contractor charge a fee for any diagnostic tests? Although many contractors give free estimates, they may charge for diagnostic tests. These tests help determine what type of radon reduction system should be used and in some cases are necessary, especially if the contractor is unfamiliar with the type of house structure or the anticipated degree of difficulty.
• Did the contractor inspect your home's structure before giving you an estimate?
• Did the contractor review the quality of your radon measurement results and determine if appropriate testing procedures were followed?

Once you have several estimates, compare the contractors' proposed costs and consider what you will get for your money, taking into account:

1. a less expensive system may cost more to operate and maintain;
2. a less expensive system may have less aesthetic appeal;
3. a more expensive system may be best for your house; and
4. the quality of the building material will affect how long the system lasts.

Do the contractors' proposals and estimates include:

• Proof of state certification and/or professional proficiency or certification credentials?
• Proof of liability insurance and being bonded, and having all necessary licenses to satisfy local requirements?
• Diagnostic testing prior to design and installation of a radon reduction system?
• Installation of a warning device to caution you if the radon reduction system is not working correctly?
• Testing after installation to make sure the radon reduction system works well?
• A guarantee to reduce radon levels to 4 pCi/L or below, and if so, for how long?

The Contract

Ask the contractor to prepare a contract before any work starts. Carefully read the contract before you sign it. Make sure everything in the contract matches the original proposal. The contract should describe exactly what work will be done prior to and during the installation of the system, what the system consists of, and how the system will operate. Many contractors provide a guarantee that they will adjust or modify the system to reach a negotiated radon level. Carefully read the conditions of the contract describing the guarantee. Consider optional additions to your contract which may add to the initial cost of the system, but may be worth the extra expense. Typical options might include an extended warranty, a service plan, and/or improved aesthetics. Important information that should appear in the contract includes:

• The total cost of the job, including all taxes and permit fees; how much, if any, is required for a deposit; and when payment is due in full.
• The time needed to complete the work.
• An agreement by the contractor to obtain necessary permits and follow required building codes.
• A statement that the contractor carries liability insurance and is bonded and insured to protect you in case of injury to persons, or damage to property, while the work is done.
• A guarantee that the contractor will be responsible for damage and clean-up after the job.
• Details of any guarantee to reduce radon below a negotiated level.
• Details of warranties or other optional features associated with the hardware components of the mitigation system.
• A declaration stating whether any warranties or guarantees are transferable if you sell your home.
• A description of what the contractor expects the homeowner to do (e.g., make the work area accessible) before work begins.

Find this information and more in EPA's Consumer's Guide to Radon Reduction or download the PDF here.