Portsmouth are looking to increase the capacity of Fratton Park so they can compete "at the top level", says chairman Iain McInnes.
The League Two side's ground holds about 20,000 people but McInnes insists they need to be prepared for success.
"We're currently looking to extend the capacity, and therefore the income," he told BBC Radio Solent's fans' forum.
"The club will need that to compete, not even at Championship level, but at the top level of the first division."
McInnes continued: "If (Portsmouth manager) Paul Cook brings success, and no question he will, it's the board's objective to make sure we're ready for it."
Portsmouth were in the Premier League as recently as 2010 and lifted the FA Cup in 2008.
Severely affected by financial problems, Pompey slid down the divisions and they are now preparing for a third successive season in the fourth tier of English football.
"What's the point of getting a good manager, team, CEO and fantastic fans, and then saying 'let's go up and be bottom of the first division?' That doesn't make any sense at all," added McInnes.
"I'm flanked by the best manager and character that fits this football club for as long as I can remember, so if that doesn't make me confident, I don't know what does."
Pompey, who begin their campaign at home to Dagenham & Redbridge on Saturday, expect to complete deals for midfielder Ben Davies and goalkeeper Brian Murphy before the weekend.