Southlake’s median sales price increases more than $50000 from October 2018 to October 2019 … By BrokerOwner.net December 11, 2019 Real Estate Sales Tags: real estate , Market Data , city of southlake , city of colleyville , city of grapevine , Homes on the market , The Metairie. SHARE THIS STORY. Share on: Post navigation Previous PostFall 2019 Arizona Case Law Affecting Commercial Real Estate and Lending (December 2019) Next PostCalifornia Officials Urged to Move Faster on Sea-Level Rise