Also, if its a sun room, was this permitted? A lot of sun rooms added on are usually not permitted.
I would follow Anna's suggestion and consult a real estate attorney.
David Cooper Las Vegas Foreclosure Investor in Bank Owned houses with Cash Flow. FReee List +1-7024997037 not a real estate agent Ask about limited partnerships
The only issue you may have to fall back on it the mold issue as I see it. If any evidence suggests that that was a long term issue, which mold usually tends to be, then you may have a feather in your cap. But that's a long shot. Mold can and usually is related to a long term pre existing condition. Is there any forensic evidence that they may have covered it up? Look a little deeper. This may be your only hook.
Your first step should be to contact the company that completed your home inspection and any company that you may have contracted to complete a roof inspection. This would allow them to verify if this was a pre-existing condition. If it was pre-existing, then why was there no mention in the inspection report(s)? This re-inspection should take place prior to any repairs being made. You should speak with an Attorney that specializes in Real Estate law to determine what options you may have. Make sure to bring ALL of your paperwork from the sale when you speak with the Attorney. Good luck!
Im sorry you are in such a sad situation first of all. However, you will need to prove the prior owner knew about this which may be very difficult to do even though there is evidence. They can say it was done before they moved in, etc etc. If you worked with an agent to purchase this property, you should contact them and see what can be done at this point, however, I doubt there is much. Real estate attornies can be quite expensive so I always suggest people contact the DRE legal hotline...it's free to consumers and they will guide you as to the next step you can take. Good luck.
Title insurance only protects against you getting the house free and clear of any liens. This sounds like you need to contact your home owner's insurance.