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. 

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?

Instructions were “this Is going to be a long term hold I don’t need White House cost on parts but I want long lasting parts, I.e. the 50.00 metal toilet repair kit instead of the 20.00 plastic one.”

Also it appears you need to have your evaporator coil replaced due to door missing and large gap at the base of coil box. 

The only "value-add" work we did was clear out the property: a crazy amount of trash (-$), scrap metal ($), and Facebook Marketplace sell-ables ($$$).