All recommended flashings/metal caps were installed/present and sealants reassed and looking good.

It would seem likely that someone over the past 50 years might have placed an eye bolt or some other piece of metal in the trunk that would destroy my saw blade.   

Custom metal double front door10.

However, we've explored using some corrugated metal fencing for the next ones we need to replace, something like this.

The only other differences I'd see are hurricane windows/door, metal roof, the house designed for the coastal elements, ect. 

Hi Joey,You could staple chicken wire over the broken fence part until you decide to replace the rotten wood.Chicken wire is cheap and a good barrier to dogs--in addition to the shock collar.It's also quick and easy.If a dog is breaking the fence--it might mean it's time to replace it, and possibly the uprights.You can have metal chain link fence posts installed for wooden fences if you want, if you can find workers in your area that know how to do it.Then the posts will no longer rot.Good Luck!

According to the contractor that did an inspection they have roof, siding, and metal gutter damage. 

Might be worth checking with the treasure about where tax bills are going or if it will be a county tax sale shortly. 

The profits I make allow me to help support my family, which gives me the bandwidth to keep doing this, and also allows me to continue to turn trash into treasure.

My concern is how do I know that the rocks and metal that the sewer auger could not clear were really cleared/removed from the pipe?