Answers

get a lawyer

You need to consult the local building and zoning department.  Changing means of egress may not be allowed or may require a permit.

Good information above,  Most fourescant bulbs can not be dimmed without special ballast and dimmer.  The dimmer should be rated for the total watts of the bulbs used.  If using LED bulbs make sure the dimmer is rated for LED bulbs, otherwise the lights may flicker.

I agree with answer 1.  The electrician should have had his work inspected by an independant electrical inspection agency.  they would place a sticker on the panel bos.  you can also contact the inspection agency yourself and have them do an inspection for you.  It sounds as if the electrician did not follow standard eclectic parctices or code.

What location?  There are probably many companies that can do marble in your community.

Clorox foaming spray works great.  Just spray it on and leave it sit.  No need to rinse or scrub.  It may take several applications.  It is washed off when you use the shower the next time.  it will even remove mold behind the caulk after several applications.

None of them work.  they either let small debris filter in or in a hard rain the water just runs over the gutter and not into the gutter