1st flr tenant clogged toilet, overflowed, and caused damage in basement floor & ceiling - how to quote a repair?

[Stephen Chan]

Hi all,

(Apologies if this is posted in the wrong forum - not sure which section this belongs to!)

As in the title, my 1st floor tenant recently clogged his toilet, causing it to overflow, and a good amount of water got through the 1st floor, into the basement's ceiling, and subsequently, floor.

I'm a newbie landlord (just started last year), and not quite sure where to start in terms of getting a quote for repairs. The tenant's dad is a contractor and the tenant offered to have his father look at it - but as you can imagine, I have can't trust the guy's judgement, as the father could just say "no damage" leaving me "holding the bag".

Some areas of the floor and a velvet couch that was in the basement also seems to be growing this dense, white, spider-web like substance (mold?) in certain areas where the water had settled.

There's no water anymore, but the flooding so far damaged:
A) 1/2 of one of the room's drop ceiling tiles [see pic set A]
B) A couch which seems to have this "white growth" [see pic set A]
B) About 1/8 of the main basement room's (sheetrock?) ceiling [See pic set B]

Pictures
Set A - http://imgur.com/a/lgVhV
Set B - http://imgur.com/a/wsjU0

Long story short, I feel that I need to contact someone to get a quote - but should it be:
- A general contractor?
- A mold removal guy?
- A water / flood specialist?

Help?

(Thanks in advance!)