Action to Quiet Title
A court action to establish ownership of real property. Although technically not an action to remove a cloud on title, the two actions are usually referred to as "Quiet Title" actions.

Actual Age
The amount of time that has passed since a building or other structure was built.

Addendum  
A supplement to any document that contains additional information pertinent to the subject. Appraisers use an addendum to further explain items for which there was inadequate space on the standard appraisal form.

Adjusted Bias
The value of an asset (property or otherwise) that includes the original price plus the value of any improvement, and less any applicable depreciation.

Adjsuted Sales Price 
An opinion of a property's sales price, after adjustments have been made to account for differences between it and another comparable property.

Adjustable Rate Mortgage (ARM)
A mortgage where the interest rate is not fixed for the life of the loan. These mortgages adjust periodically based on an index that changes with market conditions. The rate of interest is the sum of the index plus a margin ( the margin remains fixed for the life of the loan). Most ARMs have periodic interest rate and payment caps, as well as a life cap. ARM's may also be referred to as AML's or VRM's.

Adjustment Date
The date the interest rate changes on an adjustable rate mortgage.

AdSense
Google AdSense is a fast and easy way for website publishers of all sizes to display relevant Google ads on their website's content pages and earn money. Because the ads are related to content or matched to the characteristics and interests of the visitors a site content attracts.

Ad Valorem
Designates an assessment of taxes against property. Literally, according to value; based on the "ability to pay" theory.

Adverse Possession
The actual, exclusive, open notorious, hostile and continuous possession and occupation of real property under an evident claim of right or title. The time required legally to obtain title by adverse possession varies from state to state.