This is an excellent video if you are thinking of selling your home ! What needs to be disclosed to avoid legal action... it is called "cover your a$$" Mark Weisleder is a fantastic real estate lawyer...
Having a Professional Realtor will help avoid issues later. They know the rules.
For more information about selling your home, I would be happy to meet with you. Call me at 905-831-2222 or direct at 416-300-3004. Real Estate is my passion. You won't be disappointed. Cheers !