Unless you make your living in an area of construction I don’t see how you would even be able to tell if a builder is taking a short cut. Do you know they should be using polybutilene piping vs copper? WOuld you know if they should be using 3/8 of an inch board vs 1/2 inch. I have no idea what my mechanic puts in my car when making repauirs and to be honest I don’t care. What I do care about is making sure that teh car works after it is fixed.
Based on your comments I would’t give the house a second thought. What I would consider important is spending every minute of time with my parents and family as you never know when their time might come. Seems like you really need to prioritize.
Hmm let’s go to a construction sight an overlook something that I am unknowlegeable on or have lunch at my place with mom and dad so that they are able to get away from the hotel they are staying at. Just some food for thought.