Some employees moving into parts of Apple Park

One year after construction on the first phase of Apple Park was originally scheduled to be finished, the city of Cupertino, California has granted Apple a series of temporary occupancy permits that allow employees to move into parts of the main building of the “spaceship” campus, reports VentureBeat.

According to a spreadsheet compiled by Albert Salvador, a Cupertino building official, Apple received temporary occupancy permits on Dec. 30 for five of the 12 sections of the massive circular structure. The company had  received a previous temporary occupancy permit back in July for one section of the headquarters that contains the restaurant and atrium.

VentureBeat says it seems Apple is on track to receive temporary occupancy permits for all the other sections between the end of January and March at the latest, according to the spreadsheet dated Jan. 17. The permits have allowed larger numbers of Apple employees to begin the move-in process this month.

Envisioned by the late Steve Jobs as a center for creativity and collaboration, Apple Park is transforming miles of asphalt sprawl into a haven of green space in the heart of the Santa Clara Valley, according to Apple CEO Tim Cook. The campus’ ring-shaped, 2.8 million-square-foot main building is clad entirely in the world’s largest panels of curved glass.

Named after the Apple co-founder, the Steve Jobs Theater. is a 1,000-seat auditorium with an entrance that’s a 20-foot-tall glass cylinder, 165 feet in diameter, supporting a metallic carbon-fiber roof. The Steve Jobs Theater is situated atop a hill — one of the highest points within Apple Park — overlooking meadows and the main building.

Designed in collaboration with Foster + Partners, Apple Park replaces 5 million-square-feet of asphalt and concrete with grassy fields and over 9,000 native and drought-resistant trees, and is powered by 100 percent renewable energy. With 17 megawatts of rooftop solar, Apple Park will run one of the largest on-site solar energy installations in the world. It is also the site of the world’s largest naturally ventilated building, projected to require no heating or air conditioning for nine months of the year.