○ 예상의 원리 : Value is created by the anticipation of benefits to be derived in the future. In the real estate market, the current value of a property is usually not based on its historical prices or the cost of its creation; rather, value is based on market participants' perceptions of the future benefits of acquisition.

○ 변동의 원리 : The dynamic nature of the social, economic, governmental, and environmental forces that influence real property value accounts for change.

○ 수요공급의 원리 : The appraisal principle of supply and demand states that the price of real property varies inversely, but not necessarily proportionately, with demand, and directly, but not necessarily proportionately, with supply.

○ 경쟁의 원리 : Competition between buyers or tenants represents the interactive efforts of two or more potential buyers or tenants to make a purchase or secure a lease. Between sellers or landlords, competition represents the interactive efforts of two or more potential sellers or landlords to effect a sale or lease.

○ 대체의 원리 : The principle of substitution states that when several similar or commensurate commodities, goods, services are available, the one with the lowest price attracts the greatest demand and widest distribution.