Computer software giant Microsoft is moving along in its efforts to replace and expand its longtime corporate headquarters campus in Redmond, Washington, east of Seattle. 

According to Geekwire, Microsoft recently announced the architecture and contracting teams for the transformational project, which aims to replace nine existing two-story office clusters with 18 four- and five-story office blocks.

On the design side, LMN, NBBJ, WRNS Studio, and ZGF Architects are on board for the 3 million-square-foot project; Berger Partnership will act as lead landscape architect with OLIN partnering on the project as well. Microsoft has also selected Skanska, Balfour Beatty, GLY, and Sellen as general contractors for the re-do, which will affect roughly 72 acres on Microsoft’s 500-acre campus.

The project will demolish all of the of the site’s original ‘X-Wing’-style, 1980s-era office buildings, replacing those facilities and then adding a net 1.8 million-square-feet of space on top of what is existing. The new offices will be clustered into “distinct villages,” according to a Microsoft statement, with the core section aiming to be “more open and less formal” than the current campus. A rendering unveiled by Microsoft depicts glass-wrapped office buildings laid out along a skewed grid surrounding a central green containing playing fields and a bosque. 

The project comes as Redmond begins to densify ahead of forthcoming transit investments that will link the city with Seattle in coming years. The first phase of the city’s Overlake Village—a 170-acre mixed-use district that will eventually house 40,000 residents—is underway and will bring 1.2 million square feet of offices, 1,400 housing units, 25,000 square feet of retail uses, a hotel, and a conference center to the town.

Microsoft aims to begin work on its $250 million campus expansion later this year with an eye toward completing the project by 2022.