The truth is, your flooded house is worth the base value, plus a little more..combined with what someone is willing to pay, NOT what you want for it.
If I were you to get a realistic idea, the worst case scenario is the property is worth the land value. At this stage, 2 yrs later, you need to view it like a potential buyer:
1) Value of the land
2) Value of the existing shell
3) Can it be insured if renovated, and for how much?
4) What is the condition of the roads / infrastructure around the property?
Now you have a choice...a) choose a realtor who will give you a realistic price to get rid of your property or b) pretend it is worth something that satisfies what you think it could be worth, then a year from now be asking the same question.
Please do not be fooled by people who tell you your property is worth a zillion dollars...beacuse it isn't...there is no point addding yourself to the For Sale By Owner signs, or people marketing your home that is no longer a home but a shell...'cause this is how a potential buyer will see it at this stage. It is better to see the reality now so you can move forward in life with some money in your pocket...less money, but at least some money.
This will probably make a difference in your potential to sell at all and sell at a different price point.