And when California had offered and wanted to bring him in on an official visit, Austin said he was still solid to the Broncos.
But a visit to Berkeley changed everything for Austin, and instead, the three-star receiver is headed to play in the Pac-12.
"I was 100% committed to Boise State when I went up, but after I saw everything that Cal had to offer, not just football and academics, but everything that Cal offered, it made my decision a lot easier so on the last day, I had a meeting with Coach (Sonny) Dykes and I committed to being a Cal Golden Bear," said Austin. "It's the opportunity of a lifetime."
Austin said the Bears had come on strong in the previous few weeks, having a couple of in-home visits with him.
"They had two in-homes with me, with Coach (Rob) Likens, Coach (Tony) Franklin and Coach (Sonny) Dykes, so they wanted me to take my visit there," said Austin. "I went up there and loved it."
Austin is excited to be a part of the Cal offense too.
"The offense is high tempo and fast paced and Coach Dykes really laid that out for me," said Austin. "It was a pretty exciting visit."
Stephen Anderson hosted Austin on his visit, and Austin spent time with the other recruits and players while in Berkeley.
"I got a chance to get to know a lot of the other players and recruits, so that was good," said Austin.
Austin let the Boise State coaches know of his decision this weekend.
"I called Coach Keith (Bhonapha) since he was recruiting me for the last couple of years and I explained everything and he was cool about it and understood," said Austin.
Now, Austin will have the chance to stay in-state and play in the Pac-12, which was something he'd long dreamed of.
"I think its definitely a new chapter that I'm excited about," said Austin. "I don't exactly want to get it over with (the recruiting process), because it's been a fun process, but I'm excited to make what I hope is a great experience."