RightMove has traditionally sold and let residential homes in the UK but the move will see it expand its portfolio of properties into continental Europe.
Euro Relais will boost the site’s range by 6,000 homes and significantly boost RightMove’s ability to tap into the leisure market.
The deal is the second announced this week between a travel company and a partner outside of the industry.
Holiday lets manager at RightMove, Anna Szyplinski, said: “They [Euro Relais] offer a partner programme that enables us to determine exactly how we present their homes on our website.
“It was that independence that clinched it for us.”