When you need to find out the value of a house or a car or something else, you have to get an appraisal from an appraiser. These people know exactly how to appraise all sorts of assets, as it is their job to do so. The very best way to get something appraised is to see one of these experts.
You are trying to answer a question: how do I get something appraised? The simple answer is that you go to one of the appraisal experts at a service that deals specifically with that area of expertise. These people have the skills and knowledge to put all of the pieces together.
Learning what they do in order to do this would probably takes some formal training and experience in order to do it right. You can count on the appraisal experts in your area or online in order to get this done.
Find out exactly what something is worth. In the case of houses, an appraiser would need to have all the details on the house and they would have to inspect it. A jewelry appraiser has to look at the gem or the jewelry as a whole to determine its value.
This is why there are different kinds of appraisers and different types of appraisal. The value of something is going to be based on several different factors. With a house, it is going to be a matter of the amount paid for it plus or minus any changes.
For example, a house that has not been renovated is going to be worth less than one that is. This is because one is improved from its original values. Property values and demographics also play a role. Also, the housing market itself will have an influence. With these factors in mind, the value is determined.