Remediating all the soil if they leaked will be a huge and costly undertaking, however properly handled underground tanks pose no real issue.

What strategy will you be undertaking?

I did pay over the market value but I am glad i didn't have to undertake the reno. myself.

The OP did mention this is a SFR, so no other units, which obviously makes this consideration more important.All that said, viewing this as a cost you should or shouldn't undertake due to how many months it takes to recoup is, IMHO, the wrong way to view this.

In my opinion, NPV in and of itself isn't enough of a financial measure to determine whether a particular project is worth undertaking...First, it doesn't factor risk into the equation (and no, you can't just increase the discount rate to account for risk, it's not a linear relationship).

The "kick 'em all out" strategy carries more risk that I'd prefer to undertake (and is usually a strategy in a D neighborhood which I'd rather stay away from).

It sounds like a big undertaking being so new and still reading books.

I think the reason I am so comfortable undertaking this at this time is because my base is so solid, my families living expenses are so low.

It's a huge multi-billion dollar undertaking that is projected to be finished by 2030.

@Brian G. trust me when I say that I think it is an awfully big project for my first undertaking as well!