Best Home Improvements to Increase Value

They usually involve setting a collector in your home for a week or so and then sending it to a lab for analysis. (One manufacturer is Pro-Lab and charges $40; includes a postage-paid envelope.) Conduct the test in the lowest livable area. Motion detector lights are a proven crime deterrent, and standard hard-wired models cost as little as $15. If running a power supply would be difficult, buy ones that run on solar power. Don’t stop at motion sensor lights; install a full home security system to match.

• Updating your home through both small