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I have a laundry room attached to the back of the house (was done by previous owner). Recently I found a leak (due to some nail wrongly on the shingle exposed). But then when I “uncover” below the roof which is the ceiling, I saw this structure:

Just to help understand better, here is the framing NOW:

The “blue” is roof rafters of the existing home structure. I suspected the previous owner built out a patio roof section and then add the laundry room which is the “red” color rafters above. However, the laundry roof was “hang” on the “green” lumber w/ U-bracket and use it as a “ledger”.

What are my options? I am thinking:

Option 1: Do nothing. It’s just 4.5 feet so that 2×4 ledger might be good enough?

Option 2: Redo the entire roof of the laundry room by doing the below. Basically re-run the rafters higher so it’s on top of the existing beam ( 2x 2×4 on top of the gray studs):

Please advise.