Kiele, useful line to draw: anything that can be replaced is a budget item. Anything that moves is a deal breaker. Fourteen answers listed problems, so let me sort them into those two piles. Walk away: Active structural movement. Not old settlement cracks, which most Chicago houses have. Movement that is ongoing: doors and windows out of square across multiple rooms, stair-step cracking in masonry that is fresh, floors sloping in more than one direction. Get a structural engineer, not a general inspector, if you see this. Engineers cost a few hundred dollars and are the best money in this whole process. Chronic water intrusion. Chicago basements and water are the local version of this. Efflorescence, a sump running constantly, a tide line on the foundation walls, or a musty smell you notice in the first ten seconds. Water is the one problem that keeps costing money after you fix it. Soil and foundation problems, which in older Chicago housing stock often show up as failing foundation walls on 1890s to 1920s two-flats. Budget items with a number attached: Knob and tube wiring. Very common in older Chicago homes. Insurers often will not write a policy on it, which makes it urgent, but a rewire is a knowable number. Galvanized supply lines. They will fail. Replace them. Knowable number. Asbestos in place, in tile or pipe insulation. Usually safest and cheapest left undisturbed and encapsulated. Only becomes expensive when you gut around it. A single old system, roof, furnace, water heater. These are just costs. The Chicago-specific thing to do before you write an offer: pull the permit history at the Department of Buildings for the address. Unpermitted work is extremely common, and the exposure is not theoretical. Retroactive permitting can mean opening up finished walls, and in some cases removing work entirely. An attic or basement conversion done without permits is the classic one, and it also may not count toward legal living space. Two more things nobody said: Look at FHA 203(k) or Fannie Mae HomeStyle. Both finance the purchase and the renovation in one loan, underwritten on the after-improved value. That is the difference between buying a fixer and being able to actually fix it, rather than draining savings and living in a construction site for three years. Budget a 20 percent contingency and mean it. Renovation budgets are rarely broken by the original scope. They are broken by what you find behind the wall, and then by scope creep, because once the kitchen is open the bathroom seems silly not to do. Decide in advance what you will not do. Chicago also uses attorney review on residential contracts, which is genuinely useful on a fixer, because you get a window to renegotiate after inspection. I am Zoltan Peresztegi, a real estate professional serving the South Bay and greater Los Angeles, and I have walked plenty of buyers through this exact calculation. Chicago is not my market, so use a local agent who does renovation deals and an inspector who knows pre-war Chicago construction. Zoltan


