Try these sources: * National Association of the Remodeling Industry, 780 Lee St., Ste 200, Dex Plaines, IL 60016; (800) 611-6274; nari.org. * "Rehab a Home With HUD’s 203(K)," published by the U.S. Department of Housing and Urban Development, 451 7th St., Washington, DC 20410; call (202) 708-1112; hud.gov. * "Cost vs. Value Report," by Remodeling magazine, 1 Thomas Circle, N.W., Suite 600, Washington, DC 20005; remodeling.hw.net. $8.95 per copy; call (202) 736-3447 for credit card orders. * "The Do-able Renewable Home," a booklet published by the American Association of Retired Persons, available online at homemods.org.