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Five Ways to Tell a Contractor's a Quack

John Morell

04/18/08 - 11:41 AM EDT

Spring is here!

It's time for birds, flowers, baseball and ... contractor scams.

Just a few weeks after you've shoveled the last snow off your driveway, there's likely to be a nice, clean-cut guy ringing your doorbell saying he's got his work crew down the street painting or waterproofing or recoating asphalt and they've got lots of extra product left and he'll do your place for 50% off if you agree to the job today and pay in cash.

Since you're in the mood to get the house cleaned up, you agree, they show up, do their work and they're gone before sundown. Then after a few weeks you notice that paint job is looking a little thin after a spring shower, and the recoated driveway is also fading fast.

And that contractor? Gone to the next town looking to pull the same job.

"As long as there are houses, there will be contractor scams," says Frank Walker, a Seattle-based fraud investigator. "It takes some intuition and common sense to weed them out."

Figuring out if the tradesman at your door is trying to swindle you may not be as easy as you think. He's not necessarily the guy in a beat-up truck and greasy overalls. "Many of them have shiny new vehicles and equipment and they make a great professional appearance," says Roger Hays with the Contractors State Licensing Board of California. "Some of these guys make a very nice living."

Spring and early summer are when they move through suburbs across America, knowing that everyone's looking to spruce up their exteriors in the nicer weather.

Here are five signs that should raise a red flag when you're dealing with a contractor:

Overall, it's probably best to stick with a recommended contractor when you use one. If friends and neighbors can't help, try talking to the managers of the local plumbing and hardware supply stores because they deal with local contractors on a regular basis and they know the good ones from the bad ones.

Also contact your state's contractor licensing department, because many allow you to check on a contractor's status online.