IAS360 House Price Index

The IAS360 House Price Index summarizes median house price trends, and the appreciation or depreciation in house prices, monthly in 360 counties, nine census divisions, and four regions, in the United States. The index analyzes house price trends by county, rather than by metropolitan statistical area or core based statistical area. It also narrows market boundaries by treating each county as its own market, rather than lumping counties together and thus blurring the trend lines. The index does not use the “repeat sales” method because the latter significantly limits the number of transactions available to analyze the trends in house prices, which may be exacerbated in slower market conditions.

The IAS360 House Price Index uses proprietary patent-pending technology that aggregates "micro-geographies". These micro-geographies, known as iSegments, are characterized by 400 scaled and weighted social, economic, geographic and housing attributes. There are approximately 15,000 defined iSegments in the United States.