I would present your estimates for what they are not willing to comply with, and either amend the contract with your reduced offer,  create novation with new offer, or avoid the contract and walk away.Stephen Gallagher 

Since you've already purchased this property, unless you can sell quickly and get most of your investment back out, your next step before considering any future purchase should be taking whatever steps you can to alleviate the flood zone problem -- are there grants for elevating the home, would flood vents help, possibly apply for letter of map amendment if the home is higher than the surrounding area, find out if the city is planning to buy it up and at what percentage of value. 

Political signs are allowed, NOT because people like them, but because of the First Amendment (free speech).

When you check read the amendments.

There's always the option to amend your prior year return if it's in your best interest.

@Susan O. the mistake seems to have been made by the escrow company so that is who should correct it with amending settlement statements. 

Wasn't worth it to file amended returns.In recent years, tax laws keep changing and I have to check with the CPA to see if expenses should be capitalized or not.

But who knows...Fair Housing amend act of 1988.

so we had to amend the order then another 3 months went by and the title company transferred title based on the new order.. lady never did sign the deed.. and then of course she would not move so we had to evict that took another 6 months.So as you can see anyone can say just sue for performance but in reality not so easy .. and average person just will not do it once faced with the costs and the time.. 

You may not be able to get it amended, but you will at least know what you are walking into.