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GREIX

Liquidity Indicators

The GREIX liquidity indicators show how quickly real estate listings become visible on the market. While price indices track trends in purchase or rental prices, liquidity indicators show how long listings remain online and what proportion of listings disappear from the market particularly quickly.

Analyses of purchase listings are currently available for the 24 GREIX cities. The indicators are updated quarterly and can be downloaded as an Excel file. Analyses of rental listings will be added shortly.

Purchase Listings

The analyses of purchase listings describe the dynamics of the housing market in the 24 GREIX cities. The focus is on two key metrics: the time on the market and the proportion of listings that remain online for no more than two weeks.

A shorter time on the market may indicate that listed properties are disappearing from the market more quickly. A higher proportion of listings that are online for only a short time further illustrates how large a portion of the supply remains visible for only a brief period.

Publications

The GREIX liquidity indicators for property listings are available for download as an Excel file. The data is updated quarterly.


FAQ

These FAQs explain the methodology and interpretation of the GREIX liquidity indicators.

GREIX publishes two liquidity indicators based on listing data: listing duration and the share of very short-lived listings. Listing duration measures how many days a listing was online. The share of very short-lived listings shows the share of listings that were taken offline again within two weeks. Both indicators are reported as four-quarter averages.

Listing duration measures the number of days between the date on which a listing goes online and the date on which it is taken offline. Assignment to a quarter is based on the listing end date. The relevant quarter is therefore the quarter in which the listing was taken offline.

The share of very short-lived listings measures the share of listings that were taken offline again within two weeks. A higher value means that a larger share of listed properties disappears from the market very quickly.

Four-quarter averages reduce short-term fluctuations in listing data. This makes it easier to identify more persistent changes in market liquidity while preserving the quarterly timing of the data.

The indicators are reported for apartments and single-family homes. They are available for the 24 analyzed GREIX cities and for the GREIX average.

The time series used in the GREIX report show the market cycle since 2014. They are updated as part of the regular GREIX updates.

The analysis is based on listing data from the VALUE Marktdatenbank.

Listings with a duration of more than one year are excluded. This prevents very long and potentially atypical listing histories from distorting the indicators.

An increase in listing duration indicates that properties remain online for longer on average. A decline in the share of very short-lived listings indicates that fewer listings disappear from the market very quickly. Both developments may point to lower market liquidity, weaker demand, or slower price discovery.

No. The indicators measure how long listings remain visible online and when they are taken offline from platforms. They are closely related to market liquidity and marketing processes, but they are not identical to the notarized sale date or the legal transfer of ownership.

Please cite the source as: Kiel Institute for the World Economy based on the VALUE Marktdatenbank.

Experts

About the GREIX

GREIX is financed by public funding and is a project of the Bonn-Cologne Cluster of Excellence ECONtribute, which is funded by the DFG, and the Kiel Institute for the World Economy, in cooperation with the local expert committees. Its aim is to increase price transparency in the real estate market. 

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