Even before taking office, Hillary Rodham Clinton is seeking to build a more powerful State Department, with a bigger budget, high-profile special envoys to trouble spots and an expanded role in dealing with global economic issues at a time of crisis.

Mrs. Clinton is recruiting Jacob J. Lew the budget director under President Bill Clinton, as one of two deputies, according to people close to the Obama transition team. Mr. Lew’s focus, they said, will be on increasing the share of financing that goes to the diplomatic corps. He andJames B. Steinberg, a deputy national security adviser in the Clinton administration, are to be Mrs. Clinton’s chief lieutenants.

Nominations of deputy secretaries, like Mrs. Clinton’s, would be subject to confirmation by the Senate.

The incoming administration is also likely to name several envoys, officials said, reviving a practice of the Clinton administration, when Richard C. Hollbrooke, Dennis Ross and other diplomats played a central role in mediating disputes in the Balkans and the Middle East.

As Mrs. Clinton puts together her senior team, officials said, she is also trying to carve out a bigger role for the State Department in economic affairs, where the Treasury has dominated during the Bush years.