Apple has purchased additional real estate in North San Jose, this time snapping up a 70,000 square foot building at 3725 N. First Street, reports the Silicon Valley Business Journal. Apple paid $18.2 million for the building, which formerly served as a manufacturing facility for Maxim Integrated Products, a semiconductor company.

It is not known what Apple will do with the building, but a description of the real estate listing suggests it could be used for manufacturing or research and development. Analysts the Silicon Valley Business Journal spoke with believe it's likely to be used as research space for prototyping given its small size, and Apple said in a statement it is expanding into San Jose with office space and research and development facilities.

Asked for comment, Apple provided an emailed statement that reads: "As we continue to grow, we're planning to build R&D facilities and some additional office space in San Jose. The property isn't far from the future home of our new campus and we're looking forward to expanding our presence in the Bay Area."

In recent months, Apple has been purchasing large swathes of land around the Bay Area, primarily in North San Jose. Apple purchased a 296,000 square foot research and development building in May, it leased a 43-acre development site in August, and it leased a 202,000 square-foot office building in October. Much of the property may be turned into a massive 4.15 million square foot campus, according to talks Apple has had with San Jose city officials.

Apple has also purchased a 770,000 square foot campus in Sunnyvale and it has leased 76,000 square feet of office space in the popular South of Market (SoMa) neighborhood in San Francisco.