Facebook-Dexter-1Facebook just started moving into its big new engineering office in Seattle a couple months ago, but the social media giant is reportedly already on the hunt for more space.

Citing comments from JLL real estate broker Pat Pendergast at Madrona Venture Group‘s recent annual CFO summit, the Puget Sound Business Journal reported that Facebook is in the market for 300,000 to 400,000 additional square feet of office space.

The company’s new office, at the Dexter Station project at 1101 Dexter Ave. N., has room for up to 2,000 people, and the developer of the project has already filed plans for an expansion that could give the social network even more room, if it leases the additional space.

But PSBJ reports that Facebook is close to signing a lease for the entirety of a different building, a 150,000-square-foot office structure at 1101 Westlake Ave. N. just down the hill from the Dexter office. One big advantage of this building: it’s already finished, while the expansion of Dexter Station is in the early planning phases.

Facebook could also expand back to one of its previous office Seattle offices, the Metropolitan Park campus in the Denny Triangle neighborhood. Before moving to Dexter Station, Facebook had more than 100,000 square feet there, and reportedly still controls a big chunk of space.

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