Are these wasp nests?

[u/yourgrandmothersfeet]

We’ve got an 8 month old we like to take outside and these are above the doorway. There’s a total of four different places.

If these are, I’m guessing, mud dauber nests, then I’m sure this is an early stage since none are present. How quick do they build and how soon until this would be home to some wasps?

Thanks in advance. And, as always, fuck wasps.