@Michael Wentzel I lowered the offer by $26,000. The house is in an A/B class neighborhood (670 Mentor Ave if you're interested), but needed updates in addition to the leveling (kitchen, baths, paint, landscaping, new furnace, etc). The walls were already cracking and the leveling likely would have caused more cosmetic issues that would need to be fixed. The numbers are:
ARV: ~$150K
Listed: $75K
Original offer: $62K
Bank counter: $65K.
Original rehab budget: $38K, including $5K to level the house (structural engineer said $1200-$4000 so I thought $5000 was safe)
New offer with $33K leveling quote attached: $36K
They responded with "And we're done". I figured the odds were low of them accepting but it didn't hurt to try. With a $66K rehab budget, a purchase price of $62K-$65K didn't make sense.
@Ericka G. From what I learned through this, the price can vary widely. It cost me $250 to send someone out there and I would recommend you do the same before closing. I'm grateful I spent the money now rather than buying the home and finding out later. I only got one quote, so maybe they were just high, but I called about 6 places and they were the only ones I found that were willing to quote it before I owned it (although for a fee).
The quote was $10.9K to permanently stabilize the walls (using a brace system), $14.5K to permanently stabilize the upstairs floors (new steel beams and footers) and $11K to waterproof the basement (new vapor barrier and sump). They then gave me a "preferred customer discount" (no idea why) of $2700 to bring the total down to $33.7K. The quote included all materials, permits and engineering.