The Assessment is the way a home is valued to get assessed for Taxes - Local, County, and School.
The Assessed Value of a property has NOTHING to do with the current Market Value of the property. You want the assessed value to be as low as possible. The lower the assessed value the lower the Property taxes.
You can get information on the last sold amount by looking up the property in county records online if the county where the property is located has an online website. The only way you can get information on the last sale without the help of a Real Estate Agent would be to research county records. If the home has been sold since 1999 and it was sold through a real estate agent, this information will most likely be available by conducting a search in the local MLS - but consumers do not have access to this information - only a real estate agent can help you with this.
I hope this information helps you.
Of course, because market value fluctuates, it is just a general indication as to what the property is worth.
In some parts of the country , the assessed value is substantially lower than market value, so don't base your idea on what the property is worth on that number alone.