I am thinking about buying my dream house at a dream price. The catch, it has chinese drywall, hence the incredible sale price. I have the ability to wait until it all fixed and wanted to know how much it would cost to add onto the sale price of the home. I realize that the drywall, wiring and A/C would all have to be replaced but I think I can do all that depending how much that would cost for a 2500 square feet house..?

I don't see any reason why the drywall and AC need to be replaced.

You might want to have the ducts cleaned.

Remember that drywall dust can be deadly to the heater if used.

Figure out about how many sheets are needed and the linear foot of corner moulding.

Ceilings are going to be the hardest and you may have to rent a sheet lift.

Current protocol from the CPSC calls for the replacement of wiring, insulation, copper plumbing, all HVAC, and of course the drywall

Obviously to replace the drywall, most other components of the home will have to be removed or replaced. It is a case by case basis on whether you can save cabinets, counters, appliances, etc.

I am a real estate appraiser, flipper, and contractor in the New Orleans area. I can only guess at your particular situation, but when we look at a typical construction draw sheet as it relates to a gutted house, ( I saw literally hundreds after Katrina ) it works out to about 45-55% complete if the exterior is good. Based on typical renovation costs you should expect to spend between $40-60 per SF depending on what you can save and how nice your trim package is. Homes with particularly high construction quality will be more, or you could do this on a budget with some DIY for less.

chris101970 is correct about the damages done by chinese drywall and his numbers right on.

Chemical off-gassing in chinese drywall damages metal plumbing, ductwork, wiring and even metal fasteners.

So the house will basically have to be completely gutted to do the repairs.

That said, consider any new house under construction that is a 'dried-in' shell with roof, siding windows and doors in place and nothing else.

This represents about 40-50% of the total cost to build the house.

So gutting the house to re-do everything from rough-ins to finish should about double the price Judahgirl would now pay.