Corinne wrote:
My neighbor has a fence and the back side faces my backyard.

Can I paint it to match the color of my house, or do I need his
permission first?

Thanks.

Corinne

Is it a common fence on the property line? If so, I'd paint away. That
is if I was into painted fences...

But then you said your ..."neighbor has a fence"... That would make it
his property and therefore you couldn't paint it w/o his permission.
What's hard about this for you?