Jaron Walling said something that caught my attention, "search for and buy a bad roof, leverage it during the negotiation"....especially of the property has been sitting on the market longer than normal for the current market, a "bad roof" might be a gift from the real estate genie.My point is this: get good at estimating and fixing a bad roof (or any particular problem found with most houses that sit on the market longer) and you'll get comfortable buying/fixing properties that scare off other buyers. 

I would be surprised if the city *doesn't* require the walls to be opened.

Sounds like an easily executable deal from what you've stated but likely need more color to offer path forward, terms, etc.

@Jaron Walling I appreciate the response!

See below for explanations, with headings taken from the attached document.Broken windows or exterior doors-The two narrow windows in the living room do not fit into the walls properly.

Quote from @Jaron Walling: This question seem pretty naïve for someone that's flipped about 30 houses. 

they said around 90% of market value.I tried to get them to understand that this property needs a LOT of work, almost a full gut, some holes in walls (small) old carpet needs to be ripped up, i mean like the works on this thing, you can prob get away with touching up the kitchen since its real hardwood and the bathrooms as well but this prop needs at least 80k.Found out owner actually owes 140k on property, and zillow is zestimating it to be 127k.

Kitchen cabinet handles were placed upside down, cabinet doors were installed backwards, electrical line for thermostat was ran on the inside of the bedroom exposed, trash swept into newly installs vents from the furnace, cracked tub, wall switches were installed sideways in some rooms, wall outlets were installed upside down on some walls, list goes on.

We focus on CapEX before beauty. as a realtor we understand selling or renting homes you have to make the home function, Roofing, windows, electrical and plumbing. after we address these we focused on beautify making sure the upgrades match the area and is forward thinking with color scheme, flooring, and flow.

It would be like if someone prepared to sell by painting to create fresh visual interest, but chose fuscia and lime green...those colors would certainly catch the eye but I'd never claim that they overdid the curb appeal by painting with too much visual interest.