That said, I have a nice stream of passive income (including math freelance jobs to keep me busy), and a lot of time on my hands, as well as experience with materials and vendors doing home renovations.

For you to ask this, you're valuing that "16% CoC" so highly it's likely overriding the real material aspect of the investment.

Beyond that, you need to become an expert on labor and material rates in your area or get connected with someone else that is. 

The roofer gave me a invoice with high level bill of material, and a statement that it has 2 years of warranty and brand name of the shingles.It does not say brand name warranty or model or batch number etc. 

See what's on facebook marketplace & craigslist, so many people have extra construction materials from remodels they'll give away for like $20.

We have found that setting our expectations about what we want is helpful (financial performance, level of renovation we can handle, forced equity opportunities, number of bedrooms, etc) and then waiting for a deal to materialize. 

I recently flew to hawaii from AMEX Platinum Points but it was just because I did the opening card promotion minimum amount and got a ton of points.

When you read that material and you have a question, it will then be a specific question that can be answered.

These are the first things I look at.Lastly if someone is advertising on BP, it’s not a bad or good thing - all it means when someone advertises on BP or pays BP to be promoted it just means they paid to be on the website.

When you have unscheduled entry as an option, I think it encourages them to do weird stuff like hide stuff in weird spots, etc because they are always on guard.Hoarders clauses would have to be linked to fire codes I think for excess people and materials near fire sources, etc.