Hi! everyone

I saw a sentence in my grammar book (Practical English Usage, Michael Swan, Oxford University Press), and I couldn't figure it out its meaning.It says:

"I've known her since I've lived in this street."

I really don't know what's the meaning of it. The most confusing part is "since I've lived in this street." I still don't know since when he first knew her? What's the starting point?

I really need someone to explain it to me, and I would appreciate that! Emotion: smile
It means that he has lived in the street for X length of time from a past point until the present, and has known her for the same period of time.
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Thanks a lot!!
From the moment I started living on this street