Providing an Internet web-portal for cataloging, inventorying, uploading, storing and displaying a digital binder of information in the nature of identifying information including model numbers, serial numbers, manufacturer names and product names, warranty information, product manuals, and for accessing a warranty registration service, for building materials, equipment, appliances and products or services used in the course of home sale, construction, completion and closing; Providing an Internet web-portal for creating and accessing task lists and maintenance lists and documents uploaded by the homebuilder