If you’re preparing to have major renovations or repairs on your home, be forewarned. Unless you carefully choose a responsible contractor, you may get stuck with substandard work or no work at all. Check out these contractor horror stories. They’ll convince you that properly vetting your contractor is the only way to avoid having your money stolen.

Horror Story No. 1

Mary Clinton didn’t even realize her roof needed to be repaired. A contractor in a late-model truck knocked on her door. He told her that her roof would probably not survive a severe thunderstorm. He walked Mary around her home and pointed out several areas of the roof that he said couldn’t survive heavy winds. His estimate was reasonable. He said he could start the job immediately. Mary fell for his line. She didn’t bother to ask another roofing company for an opinion. Her husband passed away six months ago, and her children live in another state. Mary gave the contractor a deposit to start the job. She never saw him again. She finally called a local roofing company that was recommended by a neighbor. That company told her that her roof was worn, but it didn’t need to be replaced.

Horror Story No. 2

Bonnie and Tom Olsen didn’t recognize the workers who arrived to install their polished granite counter top. This was the third set of employees who had been sent by their boss to do the job. The results were the same. Their counter top was more fragile than usual because it had the holes already cut for the sink and cook top. The workers gently carried the granite top into the home. When they lifted the counter top to put it in place, the granite buckled and broke into two pieces. Bonnie had seen this before. Tom had taken a vacation day to observe the work, but all he saw was another in a series of failures by the contractor’s helpers.

Horror Story No. 3

Richard and Iris Patzkowsky fell for one of the oldest scams in the book. In early spring, a truck pulled into their driveway. A well-groomed man came to the door. He told Richard and Iris that his crew had extra asphalt from a nearby job, and they could reseal the Patzkowsky’s driveway for a good deal. It turns out that Richard and Iris had intended to have their driveway sealed that year. The man told them that no deposit was necessary. Richard and Iris agreed to let the workers seal their driveway. The crew showed up the next morning. They sprayed the driveway and spread the black goop quickly. An hour later they asked for their pay. The driveway looked like new. It was black and shiny. The only problem was that the workers had coated the existing macadam with a blend of diesel motor oil and paint. It looked great, but it was not a sealant. Richard and Iris had to hire another company to properly reseal their driveway.

Avoid the Scams

There are many more horror stories about scam artists posing as contractors. Licensed and unlicensed contractors frequently offer deals that are too good to be true. They do the job, but their work is so poor that it doesn’t last and eventually has to be redone. To avoid getting scammed, please follow these tips:

These up-front tips should keep you from hiring a bad contractor. If you hire a contractor who raises the price, changes the contract or uses lower-grade materials, you’ve probably fallen for a scam. Whatever you do, don’t pay the final bill until you’re absolutely satisfied with the results of the job. Write down the contractor’s license plate number to be safe.