Generally I shoot five exposures that I feel I might need but usually end up needing only four after post processing. Starting with the brightest exposure as the background, I'll post process the next darkest exposure and paste it in the layer above, repeat until all images are in separate layers in one PS file. I'll work through each layer using masking, dodge, burn and opacity effects. Photoshop CC added a "Camera Raw Filter" which is a huge help for lifting shadows and adjusting color temps after you've converted out of RAW.
It sounds like you are adding each exposure/layer individually.
You can open multiple raw files as layers in Photoshop. (select them all, then "open as layers" or something similar)
It should open ACR to process them (all at once).
If I remember correctly, since some version you should be able to make the ACR adjustments "smart" (@somebody who actually has PS: please elaborate on that) so that you can adjust them later.
Maybe this saves you some time.
However, I'm also all in on the 32bit HDR workflow.
I feel like it's what HDR is supposed to be: a way to extend the dynamic range of your images, nothing more, nothing less.
There was a great thread with plenty of information on HDR software a while back:http://www.canonrumors.com/forum/index.php?topic=11859.0
As your original workflow involves going through each layer there's another way to shoot architecture, but this time each exposure varies by using flash:https://www.youtube.com/watch?v=1yEtc-YNT1I
I never tried that before, but the house you photographed in your first post looks kind of fancy, so this might be worth considering.