Apple said that the construction of its new spaceship-like headquarters in Cupertino, California, US will not be completed until middle of 2016.
The iPhone maker had originally planned to break ground on its new headquarters, dubbed Apple 2, this year, but extended it to 2014 due to delays in completing the environmental impact study for the facility.
Earlier this month, Apple had updated and presented the plans for the 176-acre headquarters to the city.
The building will be situated on a 71ha site close to the company’s current headquarters in Cupertino, California.
Designed by the UK based architect Sir Norman Foster, the building will feature a closed ring design and will accommodate about 12,000 employees.
The 2.8 million ft2 building will have four-stories above the ground and two basement levels.
Cupertino city manager David Brandt was quoted by Bloomberg as saying that: "They could conceivably break ground in 2013, but only if everything goes smoothly. That depends on the city council approving the project quickly, and on residents not filing legal challenges."
"The project is running a little bit slow," Brandt said.
The new proposal includes moving a 1,000- seat auditorium farther away from one of the surrounding roads than in the original plan.
Apple also plans to construct an additional building to accommodate the new parking spots to house 14,200 employees on it new campus.
"There’s nothing super-significant," said Brandt. He said the city didn’t request any of the changes. "I think they are just constantly trying to improve the project."