1. Replace your sidingExterior siding topped the list in Remodeling magazine's 2007 Cost vs. Value report, which compared the construction costs of various projects to estimates of their resale value by members of the National Association of Realtors. Fiber-cement siding replacement came in at No. 1, with an estimated 88.1 percent of the cost recouped, while vinyl siding replacement had the third highest recoupment value at 83.2 percent. Introduced nearly 100 years ago, fiber-cement siding is back in vogue, with cellulose replacing the asbestos of long-ago versions. The new and improved product is weather-resistant and extremely durable, says Tim Carter, (1 comments)