A new proposal shows Google is expanding the scope of its massive planned headquarters in San Jose, California.

The company has formally applied for plans to build an 80-acre project that consists of up to 7.3 million square feet of office space, higher than the previous 6.5 million originally laid out in August, according to a new filing the company released Thursday evening. The company also applied for up to 5,900 units of new housing, more than the 5,000 units previously described.

The expanded ranges allow the company and city greater flexibility as it seeks feedback in the months leading up to a final approval vote next year, company spokesperson Michael Appel told CNBC. Appel added that just because the company increased ranges in certain areas, it won't necessarily develop the maximum space.

The formal proposal comes as Google needs additional space for its rapidly expanding workforce, which is already busting at the seams of its existing headquarters and surrounding offices. The company also faces pressure from local constituents who fear its growth will further contribute to the already-tight housing market, which is among the country's most expensive.

The company expects to house up to 25,000 employees in the new offices, which has caused backlash from community members concerned about displacement. Some residents protested at the company's annual shareholder meeting in July, even after the company announced a $1 billion housing pledge across the Bay Area.

Since Google first announced plans for its San Jose headquarters in 2017, it has bought more than $400 million worth of San Jose real estate and more than $1 billion in Sunnyvale. That's in addition to purchases in neighboring Mountain View and San Francisco.

This week, the company bought 40 acres of land in Gilroy, California, where it said it will grow trees and foliage for its campuses.