The fundamental principle here is the prohibition against Geneivas Da'as (deception), which according to the Gemorah in Chullin 94a applies universally (to a Jew and Gentile) and forbids misleading others through the omission of material facts (such as failure to disclose that real estate being sold was in a former flood zone). The Sefer Yereim and Ritvah consider this a biblical prohibition, while the SMaK views it as rabbinical, but all authorities agree it constitutes a serious violation.
The Chofetz Chaim in his Ahavas Chesed rules that there is an outright prohibition against lying or misleading others, interpreting "Midvar Sheker Tirchak" (distance yourself from falsehood) as a comprehensive mandate for truthfulness.
The Mishna in Bava Metzia (59b) explicitly forbids mixing older produce with newer produce without disclosure, establishing that sellers cannot misrepresent the true nature of what they're selling.
The Shaarei Teshuva (3:181) goes further, stating that even the normally permitted practice of lying to keep the peace (Mutar Leshanos Mipnei HaShalom) does not apply to cases of Geneivas Da'as, underscoring how seriously this prohibition is viewed.
In real estate transactions, buyers reasonably expect sellers to disclose known material risks that could affect the property's value or habitability. Withholding flood risk information - constitutes a clear violation of Geneivas Da'as, as it deceives buyers about the true nature and risks of the property they are purchasing.
The obligation to disclose is particularly strong here because flood risk directly impacts both the property's value and the buyer's future financial obligations (insurance, potential damages, resale value). This falls within the category of material information that affects the buyer's decision-making process and must be disclosed.
QUESTION: I have a question involving the sale of real estate that is in a flood zone (i.e., in a zone where there is a higher risk than usual of flooding.) The Federal Emergency Management Agency (“FEMA”) allows something called “Fill and Build” where a developer can fill a flood risk area with something called, “fill dirt” and after doing so, the area is not technically considered a flood area. Is a real estate agent obligated to inform potential buyers that this was one of the places that used this FEMA loophole? What is the extent of the obligation to disclose this to the would-be buyer?
ANSWER: It seems that there is a clear obligation to disclose all flood risk information to potential buyers, even if it is no longer reflected in FEMA flood zone maps.
