The new site will launch in January 2016, with alpharooms claiming it will offer "some of the most competitive rates in the industry as well as a flexible commission models".
The launch of betarooms.com is being managed by head of sales and operations, Emma Lelliott who joined alpharooms in August 2015 from Thomas Cook-owned MedHotels.
Lelliott reports into alpharooms chief executive Jacky Bedlow, who joined the business in August 2014.
Bedlow said: “Alpharooms is one of the most established online sites in the industry and has enjoyed consistent growth since it started 14 years ago.