Deloitte has decided to consolidate its offices in Midtown, putting the kibosh on a long expected downtown deal for the accounting giant to move from 2 World Financial Center into 400,000 square feet at 4 World Financial Center owned by Brookfield Properties.

Instead, Deloitte, which was also going to lease an additional 100,000 square feet at 30 Rockefeller Center in Midtown, may consolidate in that tower and lease even more space — if it can find the elbow room, The Post has learned.

According Real Estate Weekly, 30 Rock’s owners, Tishman Speyer Properties, just renewed a 400,000-square-foot lease with Lazard, which was represented by another team from Cushman & Wakefield. NBC is the largest company in the building and owns its own space.

Deloitte is currently located at Paramount’s 1633 Broadway in Midtown. If the new deal gets inked, Deloitte would move to the Rockefeller Center 2.15 million-square-foot flagship around 2013 when its current 2 WFC sublease from Merrill Lynch expires.

Deloitte had already obtained New York Industrial Development Agency (IDA) incentives for state and city sales tax breaks for items to be used in the 4 WFC space. To date, they have not applied to have those breaks transferred to any other space.

A Cushman & Wakefield team including John Cefaly, A. Mitti Liebersohn and Dale Schlather has been representing Deloitte. No one from any of the companies was available for comment.