Bro. Order an appraisal before the lender sends their appraiser. Follow their recommendations for MPS or minimum property standards.
Unless that home is tied to a substantial tract of land, may be better to walk away for a home with;
Less upkeep cost. Lower effective age. Better utility. Less wear and tear. Substantially lower financial impact and routine costs.
Minimum property standards. It's in the handbook linked at the start of this thread.
The appraiser has to make an affirmative statement of this nature for every single FHA appraisal. It is the appraisers responsibility, and is liable to assure there is minimum property standards. If appraisers fail to do so, could mean lawsuits, license revocation. So the appraiser will be critical of details of utility condition.
The heat systems worked adequately and I personally observed them functioning without issue during the appraisal. There was an adequate heat system to heat the entire home. The electrical systems functioned adequately and there were no visible damages or problems with the electric system. (presumably the knob tube is long since updated in a home that old.) The water delivery systems functioned adequately and there was at least one fully functional bathroom and kitchen. (appraiser is required to run water and flush toilets everywhere for FHA). The property has either a functional sewer system, or an apparently functional septic system. (depending on your county and city, mandatory septic system inspections may be a condition imposed upon the sale by your municipality in addition to lender imposed MPS requirements.) The appraiser must make a statement the attic was insulated and dry, and report any obvious defects with the roof and gutter system.
And it's going to be similar for any type of loan out there. Minimum standards of livability and habitability are the core requirements for insurability. Mortgage lenders have insured loans. That's why they will not loan on homes which do not meet basic habitability. Call an appraiser, call a home inspector. Call your county state or city people to see if there is renovation programs for old homes or subsidy programs you may qualify for.
This is why people should have wills and arrangements. What's the deal with a state imposed sale? 1880!?!?!? Unless you're a construction expert or Bob Villa, I mean for real. That's a lot to take on. You'll need excellent credit just to afford acceptable remodeling. Old homes really can have problems which are excessively costly to deal with. Walls can fall off, floors can give way, foundations can buckle, you can get shocked, asbestos may be present, bricks turn into sand, septic systems fail and you know what happens then.
GD state people, their taxes, corrupt medical and their excess costs. My uncle passed away in a nursing home recently. They were charging him $9k a month.
Truth is the guy should never have rented to own that long. Needs a credit score miracle.