Riddle.

My life span is on going
Hundreds of generations can watch me grow old
Unless someone decides to cut my life short
My complexion changes threw the months
I remove my coat when ever jack comes
I'm productive and kind to who ever is in need
I can be your landlord
If a home is what you need
But always remember
That your neighbors can be a little nutty
So if you decide to stop by
Just knock on my door
And come up high