Last farm in Van Nuys

I live near this farm that is at the end of Hazeltine ave. in Van Nuys. I became aware of it riding on the Metrolink train as it heads towards downtown. I have asked about it, and no one knows anything about it. It is the last part of a stretch of farms that existed here 50 years ago. It is strange that it is still here. I do recall a farming store on Van Nuys in the '80s near here, so there must have been others nearby.