Interviewing a Replacement Window Contractor
Estimates
Make sure you insist that the estimate itemizes the cost of specific materials. For instance, the quote should be based on your actual window size in order to get a true estimate of the project. The estimate should also include labor and time estimates.
Don't hire based on lowest price alone. Thoroughly examine each quote. Is the price of materials low compared to other estimates? Before making a decision, weigh all factors -- price quote, references, and professionalism.
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Ask About References, Trade Association Affiliations and Business Practices:
Business Practices
- Ask how long they’ve been in business. Look for a well-established company and check to see if there have been any complaints filed against them. You can find out a lot of information from your state and local Consumer Protection Offices; the state or local Builders Association and/or Remodelors Council; local Better Business Bureau or Federal Trade Commission (877.FTC.HELP)
References
- Find out how many projects like yours they have completed in the past year. Ask to see a few of the finished jobs as well as jobs in progress. This way you can see hands-on how they work. Ask references:
Was the project completed on time?
Were you satisfied with the outcome of the project?
Did the workers clean up every day? Did they keep the job site safe?
Were there any unexpected costs? Did the contractor stay on budget?
Did the contractor use a change order form for any changes?
Would you use the contractor again?
Could you communicate well with the contractor? How was his/her attitude when problems would arise?
Trade Association Affiliations
- Ask if they are a member of a national trade association and if they have been certified in remodeling or had any special training.
Ready to talk to a contractor in your area? Fill out the FREE replacement window quote form.
Ask About License, Permit, Insurance and Liens:
Ask to see a current contractor’s license.
Contractors bidding on any project over a few hundred dollars need a license in most states. In some states you need 2 licenses to install windows - a Home Improvement Contractor's License and a Construction Supervisor's License. Check with your local building department or consumer protection agency to find out what the licensing requirements are in your area. Some can range from simply paying a fee to a detailed qualification process. You can find out exactly who is licensed and who isn't by calling or checking out the state licensing board website at http://www.contractors-license.org.
Find out if you need a permit.
Most states require permits for building projects, even for something as simple as a deck. If the contractor insists that you get the permit that could mean the contractor is not licensed or registered.
Don’t forget about Insurance.
Contractors should have personal liability, worker’s compensation (protects you in case a worker is injured on your property), property damage coverage (covers you in case a contractor damages your property) and automobile insurance (protects you in case a contractor’s vehicle damages another vehicle on your property). Don’t just take their word for it. Ask to see the certificates. To ensure its valid, the certificate should be mailed directly from the insurance agency to you. You can be held liable for any injuries and damages that occur during the project, if you do business with contractors who don’t carry the appropriate insurance.
Watch out for Liens.
Sometimes subcontractors and suppliers place liens on your home that give them the right to make a legal claim against you if your contractor doesn’t pay them. To avoid this, you could pay the subcontractors directly or request the contractor to give you an affidavit at the end of the project stating that all subcontractors and suppliers have been paid. This way you will not be liable.
Ready to talk to a contractor in your area? Fill out the FREE replacement window quote form.
Contractor Fraud
Here are some Red Flags to look out for when interviewing a potential contractor.
Facts For Women Hiring Contractors.
Find out how to protect yourself.

