I would actually recommend using rentometer.com to try and find out how much you should raise the rent or what you should be charging. You can get rent averages within specific radiuses in cities. Rent can really depend on the actual neighborhood, how many bedrooms, etc. and they let you change the radius on their app. Then of course, you would need to take into account whether or not you've renovated it, if it's outdated, etc. If you haven't done much maintenance or done much to improve the property then you'd want to charge less than the average, of course; and if you've made a bunch of major renovations you can charge more for rent than your neighbors and people will be okay with it.
TLDR; the average I found for your area is $1829 for a 2 bedroom within a 1.34 mile radius of Tujunga.