United Nations ? Delays in the renovation of the United Nations headquarters, caused chiefly by the United States, are adding $225,000 a day to the project’s costs, a U.N. official said Monday.

The United States is the lone holdout on the committee that must approve the next $100 million needed to proceed with the estimated $1.6 billion renovation, said Fritz Reuter, the U.N. official overseeing the program.

The projected cost of the project was good up through April 1. Every subsequent day of delay adds an estimated $225,000 – $3.8 million so far, he said.

U.S. Ambassador John Bolton said the United States only wants to grant approval for some $23.5 million because the General Assembly needs to agree on how to proceed with the project.

There has been no formal General Assembly agreement on a comprehensive renovation plan.

“We, the United States, think $23.5 million is a lot of money and we think it should carry a pretty good distance until we can have decisions by the General Assembly on other critical questions like what strategy the organization wants to follow,” Bolton said.