I went home and starting searching google to understand these words they were saying.

My point is, not to discourage you from making good estimates, but don't get too hung up on math from your desk as when you visit the property/walkthrough with a GC/inspector expectations often will change even if you spend hours calculating on your own.Good example: we entered a contract on a 950 sq. ft. property last week that appeared to be CBS from our Google streetview and based on our conversations with the seller who did not have much information as she lived out of state.  

I usually use a combination of the app and pulling it up on a Google browser; the app does a good job showing all the posts and typing in replies, but leaves out a lot of the site's abilities, so I keep the Chrome browser open for that (i.e.

Check Vision Appraisal or Google your city's appraiser's office and see what you find.

You could set up a google voice number as well so they do not have your personal phone number.Treat it as a business.

Or you are selling personal information like Facebook or Google, which is creepy.

Google Fernco flexible coupling. 

He asked me about it, I told him to simply google it and show the broker.

Call Ami Bonis (google her - I'm not sure I'm allowed to post the link) and tell her Andrew sent you

I do t have the names at hand but an hour on google will get you those answers.