Flames shot high into the air as firefighters responded to the facility around 6:15 a.m. in the 2600 block of Allen-Genoa near S. Houston Road.
No injuries were reported and it wasn't clear what was inside the units that were destroyed.
Next door, Mara Camberos said she was cooking breakfast for her four daughters and granddaughter when Andrew Baker alerted her to the fire.
"I was getting off work and I when I was coming through, I could see the smoke and smell it, and that's when I saw the fire," Baker said.
Camberos was able to get her family away from the potential danger. In the end, her home wasn't damaged.
Sections of sheet metal were torn from the structures as crews hosed down the flames and debris that was left.
The facility is located behind a gas station and car wash. No other structures appeared to be threatened by the fire.
Eyewitness captures fire on video at Pasadena storage facility
Eyewitness captures fire on video at Pasadena storage facility
The building that burned contained approximately 24 individual units.
Pasadena storage facility destroyed by large fire
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