Tottenham chairman Levy said in a statement: "We are all focused on ensuring contractors deliver our new stadium in the shortest possible period of time and opening our stadium at the earliest opportunity.
"The consequences of not being able to open our new stadium on 15 September against Liverpool have been immense. Building a venue of this scale that is open to the general public is a huge undertaking. We are creating, in Tottenham, a unique world class stadium with pioneering technology and engineering.
"Amongst the consequences of the delay have been substantial additional costs, not least of which the need for alternative venue hire, along with the inconvenience for our fans and those of our opposition.
"I want to apologise once again and thank you all for your support, many of you have taken the time to write to us and commend what we are doing for the Club. When you face times like this in an organisation it's teamwork and pulling together that gets you through.
"Our dedicated staff are having to manage operations again at more than one stadium and I want to thank them for their resilience. Mauricio, his staff and the players, have been exceptional in their support and fully embraced the changes of venue with total positivity. They have my utmost respect.
"We are now being regularly updated on progress and as soon as we have confidence in our project managers' and contractors' ability to deliver against the revised schedule of works, we shall be able to issue dates for test events and the official opening game.
"We are facing many issues, but although disappointing, costly and frustrating, I am uncompromising in my determination to deliver something extraordinary to our fans."