Wes Scantlin's neighbor is TERRIFIED of the Puddle of Mudd singer after he brandished a buzz saw outside her house -- and now she's obtained a restraining order against the guy, blocking him from contacting her in any way.
TMZ broke the story ... 41-year-old Scantlin was arrested last month after allegedly going to town on his neighbor's property with the saw and a sledgehammer ... knocking down a wall he believed had been illegally built on his side of the property line.
His neighbor Sasha Gradiva has now gone to court to make sure nothing of the sort ever happens again -- obtaining a temporary restraining order against the singer, barring him from coming within 20 feet of her at any time ... and prohibiting him from contacting her.
A hearing has been set for later this month to determine whether the restraining order should be made permanent.
Attempts to reach Wes were not successful.