SUNNYVALE — The site of a planned office project in downtown Sunnyvale has been bought by a group that intends to develop the property.

The Minkoff Group, acting through an affiliate, has bought a site at 100 Altair Way in downtown Sunnyvale, Santa Clara County documents filed on Dec. 31 show.

The proposed office project would sprout on a site that fronts on Altair Way between Aries Way and Tafee Street, according to county and city records.

100 Altair, the Minkoff affiliate, paid $32.7 million for the site, county documents show.

Minkoff Group has proposed a seven-story office building that would total 141,300 square feet, according to Sunnyvale planning files.

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“The project is providing a high-quality office building capable of supporting single or multiple tenants,” the Sunnyvale Planning Commission said in a report released this year.

The office building is just one component of a wide-ranging facelift for downtown Sunnyvale.

The major effort in the city’s downtown district is CityLine Sunnyvale.

When complete, CityLine is expected to bring to downtown Sunnyvale as many as 792 residences along with 653,000 square feet of office that will be built above 182,000 square feet of ground-level retail.

Among the major success stories: Two major anchors for CityLine Sunnyvale, a Whole Foods and an AMC movie complex are located in the same building at the corner of Murphy Avenue and McKinley Avenue.

Whole Foods occupies 52,000 square feet on the ground floor of the building while AMC DINE-IN Sunnyvale 12 occupies 52,000 square feet on the second floor of the building in downtown Sunnyvale.