that $175,000 needs to be broken down between lost rents (which would be 2019 income) and property damage.
since you did not repair the building the portion for property damage could be treated as a reduction to the cost of the billing (as long as the net basis isn't reduced below 0). then you can report the sale for $10k and use the reduced basis for figuring gain or loss.
alternative is to include the property damage proceeds in the sales price
for tax purposes - no depreciation should be taken for the period it could not be rented due to the fire.
thus either way you should end up with the same gain or loss.
