OP here. Thanks for the responses! I am mostly talking about looking at a house and being able to tell, for example, that this wall can/cannot be removed, there could be another bathroom here, this room can serve as X, etc. For instance, we toured a house yesterday and it had only one bath upstairs and no master bedroom. DH and I were left wondering, can this be changed for a reasonable amount of money? I guess we found ourselves shrugging a lot because we simply don't have the know how or the creativity to reimagine a space. I know there are people that do a wonderful job with purchasing an home and changing it up. I don't know how they do it. I thought maybe some people toured with a contractor or someone else with that type of knowledge/vision. I guess I want to be a person on one of those HGTV shows where the experts show you what you're not seeing.