I observed the securing of the patio to the house by nails only.
The house is 20 years old, It seems to me that there shd be some lag
bolt into the wall of the house…The structure was secured and did
not wiggle or sway…two pictures included…
I would not go so far as to say that a pergola needs the same attachment as a load bearing deck would need. But then a pergola is normally free-standing. While it would be easy to add some lag bolts, they need to remember to seal those holes in the stucco or Carl will start taking pictures…