You’d have to post numbers and costs to do this but for me, I’d probably demo it, sell the land for whatever it’s worth and walk away.

Finally got my first deal done it was a estate sale just get got word back from the attorney here in Washington D.C. soooo excited to just see the process from beginning to end (from demo to tenant screening) this is a JV w/ experience investor it took me about 6 months to get one.

Now subtract the cost to purchase the existing property, cost to demo the house, and cost to build a 4-plex from the ground-up.

ALl of the demo wasd pretty much finished.

This was a professional construction/demo company  hired by the Bank who did it.

Typically getting these "demo" type items out of the way on your own will save you money because you're not paying a skilled laborer to do relatively non-skilled work.

That said, with everything that you want to do for the home (ie. demo-ing the current stairs to put in a spiral staircase, and then turning the upstairs common space into another bedroom - assuming you'd add some drywall, and need to paint), I'm not sure that this is a project that can be kept under 15k -- but it all comes down to what you want to do.

Second I would demo the non functional chimney as long as its cost effective.

I am demoing TenantCloud and Rentec right now.

Another huge expense for demo crews is carting the stuff they tear out.