FYI LN that is a common rat snake. He would not be near your home if there were not rats around
I have one that lives near my garden named Sammy
I would much rather have Sammy than a nasty old rat and he eats sparrows too. There are four venomous snakes in LA.
Copper Head
Water Moccasin
Eastern Rattle Snake
Eastern Coral Snake
What is the difference between poisonous and venomous ?
This is a scarlet king snake, Lampropeltis triangulum. It is not venomous.
Look at the banding pattern (black on yellow) and color of the nose (red).
(not to be mistaken for the Coral Snake note the different pattern)
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Maranatha 
Mat 7:14 Because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it.