It's a very welcoming part of the world.
Newbury Park High ledges are famous, though, probably knobbed.
Agoura High School (stairs mostly)
Canoga/Lanark Park - all I could find that may be helpful.
Westlake YMCA Park
Malibu - skip to 0.38 - that loading dock ledge is behind a Ralphs market. Malibu is a rather odd place; it's a dead-end but with millionaires.
Mostly filmed in or near Agoura -
skip to 0.25 - random Agoura spot
Look out for rattlesnakes if you plan to hike out there.
I grew up in Agoura. It's 8 min south from Thousand Oaks and on the way to Malibu.
Oh - It's going to be pretty warm when you're here.
Food - Italia Deli, Hugos, Joi*****.
-I'm vegan, so I'm just suggesting places you can eat at that are vegan-friendly.
Hope this helps. Safe travels man!