Brentford will not move in to Lionel Road Stadium until the end of the 2019/20 season.
The Championship club were aiming to open their new ground in December 2019 but ‘operational challenges’ have resulted in a change of plans.
It means the Bees will remain at Griffin Park for the entirety of next season.
The club said: “We are delighted to confirm to all our supporters and fans that Brentford FC will play a full final season at Griffin Park and then move to our new stadium at the end of the 2019/20 season and in good time to commence the 2020/21 season.
“Given the complexity of large-scale building works adjacent to railway lines, the need to anticipate the normal delays and problems that inevitably arise in a complicated construction project, and the operational challenges surrounding a mid-season move, our view is that an end of season move is best.
“This of course gives us the chance to give Griffin Park a proper full season’s send off as we mark the club’s 130th year during the 2019/20 season.”
Construction on the club’s new 17,250-seater Brentford Community Stadium commenced four months ago and the foundations are 90 percent laid.
They are expected to share their residency with rugby union side London Irish.