Tesla had already started brush clearing and grading during the summer of 2014 (prior to official announcement in September; permit date was June 26), with vertical construction reported in January 2015.
Tesla and its partners intend to complete  the facility by 2018.‹See TfM› On March 18, 2016 a group of journalists were allowed to visit the Gigafactory under strict conditions and found that 14% of the final building area had been completed.
By April 2016 there were around 600 construction workers.
Depending on season and building stage, the number of construction workers has fluctuated between 250 and 1,800.
On June 13, 2016, Tesla filed for a $63m expansion into section E on the site.
By September 2016, the building had grown to 1.9 million sq ft (0.2 million m²) with further areas under construction.
As of January 2017 the building's footprint is 1.9 million sq ft (0.2 million m²) with 4.9 million sq ft (0.5 million m²) of usable area across several floors.
A combined permit value of $322m was registered in July 2016, and $1.2b in July 2017.

Gigafactory and the other large companies affect the local area by increased needs in transportation (SR 439) and housing; house prices increased by 17% in 2015 from half of the peak in the previous 2008 building bubble.
Local businesses were wary of building new homes, which is being done mostly by out-of-state companies.

Design features
HVAC equipment is located "between the floors rather than on walls and ceilings of a floor."
All steel is from the United States.
Tesla is its own contractor on the project, learning how to build other factories should they choose so.
Tesla had already started brush clearing and grading during the summer of 2014 (prior to official announcement in September; permit date was June 26), with vertical construction reported in January 2015. Tesla and its partners intend to complete  the facility by 2018.‹See TfM› On March 18, 2016 a group of journalists were allowed to visit the Gigafactory under strict conditions and found that 14% of the final building area had been completed. By April 2016 there were around 600 construction workers. Depending on season and building stage, the number of construction workers has fluctuated between 250 and 1,800. On June 13, 2016, Tesla filed for a $63m expansion into section E on the site. By September 2016, the building had grown to 1.9 million sq ft (0.2 million m²) with further areas under construction. As of January 2017 the building's footprint is 1.9 million sq ft (0.2 million m²) with 4.9 million sq ft (0.5 million m²) of usable area across several floors. A combined permit value of $322m was registered in July 2016, and $1.2b in July 2017.
Gigafactory and the other large companies affect the local area by increased needs in transportation (SR 439) and housing; house prices increased by 17% in 2015 from half of the peak in the previous 2008 building bubble. Local businesses were wary of building new homes, which is being done mostly by out-of-state companies.
Design features
HVAC equipment is located "between the floors rather than on walls and ceilings of a floor." All steel is from the United States. Tesla is its own contractor on the project, learning how to build other factories should they choose so.
Giga Nevada