Speaking ahead of Spurs' Premier League clash with Wolves this weekend, Frank said he believes the club's current owners are fully committed to the project.
He said the Lewis family are: "Very, very invested. 120% committed to the club. They really want to achieve something special," he said. "They want to build, want to add, and I like the phrase, building layers, because you never go straight to the top. You can't jump five steps. That's impossible.
"So building layers is very important. I think that's also more organic and more sustainable over time. But they're very, very focused on what they can do to help the club."
However, Frank did add that he thinks it important for the owners to take a more active role in the leadership of the club. Before Levy's departure, both he and ENIC had been the subject of fan protests. While the club is in a much stronger position financially and commercially, repeated failures on the pitch and a perceived lack of investment into the squad had soured the relationship between the fans and the club. The Lewis' had previously been happy for Levy to front the response, but without him, now is the time for the owners to play a more public role according to Frank.
"If you're an owner or a leader, it's important for people to see you," he said.