He found that the cast iron under the basement has some corrosion and would probably need to be replaced as another blockage would probably happen.

Steve, the current owner, has said they replaced the roof 4 years ago, which is good, but I can't find any evidence of this online thru the county website, in fact, Steve isnt the registered owner, but im guessing he is doing his wife's bidding perhaps.

I hired someone to replace the moldy drywall behind the shower and put up a new tub surround.

I removed all carpet and replaced it.

in colorado springs and i'm looking to replace my old laminate countertop with a new one, plus a new sink brushed nickel. 

I am on the fence would you repair or replace? 

The only thing that really scares me are limestone foundations as you would need to replace large sections of walls.

Remodeled kitchen and replaced carpet with LVP (luxury vinyl plank).

Thought I could've gotten a bit more but needed the property rented. 1 thing to note that I learned is we shouldn't have cut costs on tub replacement, Should've just bit the bullet.

You can also try replacing the gaskets if the unit is less than 2-3 years old.