Static test fires are SpaceX's pre-launch checks of engines, software and other equipment prior to mission liftoff.
"This modification will be for the addition of the Dragon Site in the former South Pad area, which will include a Dragon Processing Facility and static fire test stand," one of the documents reads.
The new facilities, totaling 7.6 acres in size, will be located to the southwest of the pad, which has seen five successful Falcon 9 first stage landings. Both the Dragon facility and test fire stand, which will be about 200 feet away from each other, sit within a 280-foot "explosive arc." A "control pad booth" will also be built next to the static test fire stand.
A timeline for the start of construction was not listed, but SpaceX must notify the district 48 hours beforehand.
SpaceX was granted permission in April 2017 to begin constructing a second landing pad to the north of the first, which will be used to host simultaneous landings of two first stages after the company's three-core, 27-engine Falcon Heavy rocket lifts off from Kennedy Space Center's pad 39A, tentatively planned for November. Its two side stages will land at the Cape, while its center core will target a drone ship landing.
SpaceX CEO Elon Musk in July said the company's core mission is servicing its obligations to NASA's Commercial Crew Program, which selected private companies to take astronauts to the International Space Station from U.S. soil. The company was granted a $2.6 billion contract under the program and could launch crew to the ISS on a Falcon 9 rocket from Cape Canaveral as soon as 2018.
Aerospace giant Boeing, which plans to transport astronauts in its Starliner capsule atop an Atlas V rocket next year, was also selected by NASA under a $4.2 billion contract.
Musk this week took to Instagram to reveal the first teaser image of the company's futuristic spacesuit, which will be worn by crews to the ISS – and possibly beyond.