She did not have potable water in the house because the water softener broke a few years ago and she never replaced it.

@Neil Nev Do me a favor an make him an offer at $400k to soften him up for me lol

BTW, I don't think that buying a turnkey property at retail price is a winning strategy, even if it cash flows ... if it doesn't pan out as planned for whatever reason and you need or choose to sell, then it'll cost you ~10% transaction fees to sell it, if the market happens to soften in the meantime (which is a major reason why it may not go as planned), then you have painted yourself into a corner and have run out of profitable exit strategies ... in that case, your only ways out are to bring more cash to the closing table, suck it up and try to ride out the downturn, or let the bank take it back.

House hack FTW to dramatically change your current condition quickly and effectively.A couple months later I also closed on a duplex in a great neighborhood here locally that will pay for itself handily even if the market softens a bit. 

If the data proves accurate, we should see some softening in prices in late-2018, bottoming-out in mid-2020, and rising again by end of 2020 or early 2021.

This may very well mean waiting until the market softens up.

Also, the rent market is softening a little bit. 

If the spread will be higher after the addition you must decide whether that is fair compensation for your time and to take the risk that the market changes against you during the construction period (prices can soften, interest rates can rise, etc.).

In my opinion, when we start seeing the revival of home renovation numbers, we start to see the resale numbers soften a little.

I'm curious to see how much prices soften this winter, and hoping inventory levels increase a bit too.