Inspection uncovers major mold.

[Kamlesh G.]

So my partner and I finally get our offer accepted and move to the due diligence phase. We meet the inspector at the property. Get access to first unit, its a 4-plex. We are surprised to find out that the tenant had been there for 20 years. THe current owner hasnt replaced carpet, appliances nor services HVAC in years. BUt the thing that kicks the bucket is the amount of mold we discover growing in the bathroom.
Its even made it into the bedroom next door. Needless to say we stopped inspection there, and made it clear to broker, clean up mildew or we walk.
Seller responded, by asking if inspector does commercial properties?
We are like WTF does that have to do with it. MOLD is MOLD...
SO we walked, anyone have encountered issues like this?
ANyone have experience in cleaning up mold, we would like to know the price for cleaning up mold, and if it is persistent? THanks..