I am trying to do something very specific in adobe photoshop and am wondering if anyone can help

So basically, I powerwash dirty homes to make them clean, and my goal with adobe photoshop is to show my potential cleints exactly what their home would look like cleaned. I want to take a picture of a dirty house, and photoshop the house to make it clean.

I thought the ai tool would be useful but it is only able to replace the dirty house with an entirely new one. I then tried to create a 'pattern' which was a clean portion of the dirty house that i tried to place over the whole dirty part. That didn't seem to work either. 

I am clearly new to adobe, but if anyone has a viable solution I am prepared to pay for your expertise!