Cabinteely FC have been accepted into the SSE Airtricity League First Division after the Football Association of Ireland Licensing Committee approved their application.
The Dublin club, which will use Blackrock RFC's grounds in Stradbrook, replace Shamrock Rovers B in the second tier.
FAI Competitions Director Fran Gavin said: "I would like to welcome Cabinteely FC into the SSE Airtricity League. We have been involved in discussions with the club in recent months. They have good structures in place and good foundations on which to build a First Division side that can compete nationally.
"They were accepted as a member of the SSE Airtricity League following receipt of a number of expressions of interest and subsequent discussions. Cabinteely will be filling the position left vacant by Shamrock Rovers and are set to join Athlone Town, Cobh Ramblers, Finn Harps Shelbourne, UCD, Waterford United and Wexford Youths in the 2015 SSE Airtricity League First Division."