What are the reasons I would need a real estate appraisal?

There are a lot of reasons to purchase an appraisal with the usual reason being real estate and mortgage transactions. A few other reasons for ordering an appraisal report include:

If you are applying for a loan.
To reduce your property taxes.
To show a homeowner has 30% equity and remove PMI.
To fight improperly assessed property taxes.
If you need to take care of an estate.
To provide you an edge when purchasing real estate.
To determine an honest property value when selling real estate.
To protect your rights if your property is being taken by means of eminent domain in a condemnation case.
Government agencies such as the IRS require an appraisal on every property.
If you ever find yourself in a lawsuit.