"A scout for all occasions" - that was the claim that began the success story of Scout24 in 1998, when Joachim Schoss and Christian Mangstl set up the group of companies. From the outset the young enterprise had the backing of a strong investor, Beisheim Holding Schweiz. In 1999 AutoScout24 and ImmobilienScout24 became the first two companies in the Group operating in the market. AutoScout24 had already been up and running before Scout24 was set up, under the name of MasterCar AG in Munich. Within the Group the company established itself as one of the largest German-language used car portals on the Internet. In 1997 what is now ImmobilienScout24 was incorporated as EIB Wohn- und Immobilieninternetwork GmbH in Munich. The company carried on its success story in Berlin and has grown into the largest German Internet marketplace providing the complete range of property services.

The Scout24 Group has continually expanded its expertise in other sectors: in 2000 FinanceScout24 went online as a comparator portal for banking and insurance products, JobScout24 as a job exchange with a multitude of situations vacant and career tips, and FriendScout24 as a partner and dating exchange. GesundheitsScout24* [health] and ShoppingScout24* were also launched on the market that year.

Scout24 Schweiz [Switzerland] was founded in 1999. In 2001 numerous other corporate sites were created, in Italy and Spain inter alia. Germany is still used as a location for developing new online marketplaces to boost the corporate group's portfolio. TravelScout24 was added in 2002 as a travel specialist. Three years later the youngest of the then seven marketplaces in the Group was set up, ElectronicScout24.

T-Online International AG acquired Scout24 from Beisheim Holding Schweiz in February 2004. Since the merger of T-Online International and Deutsche Telekom AG in 2006 the Scout24 Group has been a wholly-owned subsidiary of the Deutsche Telekom Group.
The Local24 and Jobs.de platforms represented a further landmark in the history of the Scout24 Group: founded in 2006 the Jobs.de portal was already operating nationally the following year. And since 2007 Local24, the search engine for regional classified ads, has been helping users to manage their very own vacancies and applications.

In 2007 Scout24 AG took over the shares in ImmobilienScout24 being sold by the Aareal Bank. Today Immobilien Scout GmbH is a wholly-owned subsidiary of Scout24.

Since 2008 the restructured homepage of the group of companies www.scout24.de has enabled users to gain personalizable access to the entire Scout24 product world. Individual search requests and additional information from the individual online marketplaces can be managed centrally from this Website.

*These portals no longer operate in the market.