This article is intended to provide a homeowner with some general information about the typical life expectancy and estimated replacement costs for the major systems and components in your home.
The information regarding life expectancy was taken from a study completed in 2007 by the National Association of Home Builders. The detailed report can be downloaded at: http://www.nahb.org/page.aspx/generic/sectionID=152 . The study indicated that the figures are average findings that took into account quality of product and installation, level of maintenance, weather, intensity of use and changes in taste and technology.
The information regarding replacement costs was taken from “Residential Construction and Remodeling Estimates” compiled by Pillar to Post
The following items address the components and systems I am most frequently asked about during home inspections. If any of the component or systems in your home are nearing the typical life expectancy listed below I recommend you start budgeting to replace the item. This information gives you a guideline for budgeting purposes. 
