My father lives in a condo which he flooded accidentally a 2 years
ago. It's a small 2 bedroom condo (1100 sqft), and about 2 rooms were
flooded. Unfortunately we did not do anything about it, except letting
it dry naturally. Since then there has been a strong mildew/mold
smell. I was going to just replace the carpets for my dad, but I was
told that their could be mold underneath the carpet.

I ordered a mold test, which is basically a petrie dish that you tape
to a air conditioning vent for 10 minutes with the fan on high, then
put in a cool dark place to let it incubate. After letting it incubate
for a week, it seems to be growing spores. The instructions say if you
see growth, you have mold. I have the option of sending the test to
their lab, to get more information on the type of mold.

Since the test, I have become really concerned about my father's
health in the apartment (though he doesn't seem to have any allergic
symptoms), and would like to clean-up the mold. However, after calling
a few "mold remediation" contractors, I could not get a straight
answer on the cost. One guy said there is a $250 removal estimate
cost, and $70 per test, and only then could he give me an estimate.
Another guy said it could cost anywhere from $2000 - $4000. I feel
like I'm setting myself up to get ripped off. (BTW, I've already
checked the homeowners policy, and it's not covered)

I believe most of the mold/mildew is in the carpet and padding.
Moreover, I've read on the net that it is possible to remove this
yourself with some diluted bleach? I was considering removing the
carpet and padding myself, and bleaching the floors. Then throwing
away most of the stuff effected by the mold. Then replacing the
carpet.

Any advice would be greatly appreciated.