Several factors go into determining your home’s market value. These include the condition of the property, square footage, location, amenities, as well as recent comparable property sales. For a snapshot of your home’s current value, you can enter your address into a free online value estimator tool. Alternatively, you can look at a recent property tax bill to get your home’s tax assessed value, which is a percentage of your home’s fair market value. If you know your state’s assessment rate (which is usually between 80 and 90 percent), you can estimate fair market value by dividing your tax assessed value by that assessment rate.