Washington (CNN) As Hillary Clinton's expected April presidential launch nears, her already sizable campaign apparatus is moving into place and getting close to signing a lease for office space in Brooklyn.

Clinton and her team have recently coalesced around the New York borough, according to multiple sources, and are nearing a deal for office space at the MetroTech complex in Brooklyn.

A lease has not been signed yet, according to a source with knowledge, but very serious negotiations are ongoing and the Clinton team settled on Brooklyn after eying other locations around New York City. She ran her 2008 presidential campaign from Virginia, just across the Potomac River from Washington.

The Clinton team is still preparing for an April announcement, several top Democratic aides, donors and supporters say, although the precise date still remains up for discussion. Dozens of campaign staffers, who have been sworn to secrecy after being notified that they were being hired, have been told to report to New York by late March.

Clinton has been conducting personal interviews with several potential advisers at her home in Chappaqua, while her top aides have been assembling a communications, fundraising, political and social media team.

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