I plan for a minimum of $2k for code inspection work- sidewalks, window locks, trip hazards, maintenance issues (basement wall sealing, exterior brick work, painting exterior trim on windows, screens, and then all of the expected- plumbing, HVAC cert, chimney cert, electrical,  and on and on.)  

Here is the cost breakdown: Install chimney cap: $1,630Crown coat: $380Waterproof chimney exterior: $495Flash seal: $599Install 16 ft of insulated stainless steel flue liner: $8,308Smoke chamber parge damaged area: $1,361Rebuild firebox: $2,610Install mount damper: $736Install approved heath rug: $215Total: Approximately $16,000. 

You can probably take a deduction for sealing the floor below, assuming the pee soaked through and damaged the sub-floor.

Also the bugs will leave during the treatment but then return so you have to make sure to completely seal every possible escape route off including wall outlets, cracks, doors windows etc. so they can’t escape and are actually killed by the ozone.

Best use a commercial drier, available at tool rental stores, then seal it.Sounds like a lot of time and $, but the liability is major.When installing new cellulose make sure it has mold inhibitor in it. 

I've had granite in my kitchen for almost 2.5 years that was sealed with something, and I haven't had to reseal since.

Everything you want on case law its all there public since its not sealed up like some family law and estate cases.

And, usually another "something else" to seal the deal.

Bottom line, this is why a broker should be interested in $200k or $300k property - he might say to himself that cash buyers looking for properties to rehab and flip are going to make purely financial decisions - if it makes sense to buy, they buy, no ***** footing around, no long escrow, deal signed and sealed, and they'll keep doing it as long as they have a supply.

This unit, back of the envelope was 10-12K in material & labor (not including mine), which included sealing the field stone foundation in the basement.