If your house no longer meets the needs of your family in some way, you will probably want to think about either moving or remodeling.
You might want to use the online calculator to see which would be the most economical way to be in a house that meets your needs.
Keep in mind that there are many ways to change your current house to satisfy the itch for change. Your options range from a decorating update to a thoroughgoing renovation of your home to building an addition of one type or another.
You might find when you review all of your options that the best way to get exactly the house you want is to remodel. If you like your neighborhood and you essentially like your house, it is probably best to consider some type of remodel.