Vertical mulch

Here’s a 10 year old home, both the front door and rear sliding glass door has moisture intrusion under the door and siding.

No easy fix here and yes, I unzipped the siding. Typical cheap sub contractor built house.

The rear was so bad the deck was starting to lean because the attachment was letting go.

How would you fix this? Is this a complete removal and replacement?

Not my job to tell client how to fix things .
I just report condition and what needs to be repaired .

Yes, both doors have deteriorated jambs and most likely the sub floor under the threshold is damaged. The siding will need to come off to replace the damaged sheathing and wall framing and then all re-installed. Big job!!!

No barrier?

Nothing at the rear. Too bad, a simple rain diverter over both doors would have prevented most of this.