That sounds like a bit of a nightmare. At least they could set you up a large touch screen monitor.
Anyway, with that said… Check out a new Extension called 5D+ Auto VBO
The 5D+ group have a bunch of great extensions you will find useful for what you doing.
It allows for multi tagging entities. ie interior/walls. I recommend… As a carpenter, is getting a copy of the model and grouping as you need for faster onsite.
5d+ AUTO INFO <---------------------
Check out this video from the 5D+ team. Its a free extension, https://www.youtube.com/watch?v=RGgwxXbZvq0
Think this will help you!!!