A replacement cost estimator uses many different factors to determine the final amount. Factors that are used include style of home, the total area or square footage as well as the foundation type. There may be an additional section if a home has a basement, if it is a walk-out and if it is finished. A replacement cost estimator will also ask what type of materials are used in the exterior walls, the floor finishes and the percentage of each type of material. There will also be questions about the type of roof, if a deck is attached as well as the number of kitchens and bathrooms. Other details may also be asked about additional features such as doors, windows and any fireplaces.