The project became apparent when documents for a parking variance were submitted to the city of San Marcos for review and city officials let slip what the development's intended use would be.
The warehouse is planned to be 1,005,000 square feet and will occupy roughly 71 acres in the Whisper Planned Development District on the north side of San Marcos.
According to Jim Welch, vice president of Pape-Dawson Engineers Inc., the project aims to come online in roughly nine months.
"This is, as you know, very, very time sensitive," Welch said. "We have to start right away, and we're looking to be online in September. So, even once we do start construction, our timeline is going to be extremely tight."
Potential employment figures were not immediately available, but Welch said the site plan would include 557 parking stalls.
Mayor Jane Hughson and other City Council members expressed a desire for electric car-charging stations and solar panels to offset some of the facility's environmental impact, although it was not clear if these were included in the current plans for the project.
Amazon operates another warehouse called SAT2 on the south side of San Marcos and announced plans earlier this year to open a sortation center in the city of Kyle.
A document for the requested variance includes the proposed use for the site as "Amazon Distribution/Warehouse."
"I will say, you know, in our packet it's pretty publicly clear who the end user is, and it's an Amazon warehouse distribution center," Place 1 City Council Member Maxfield Baker said.