Final answer:
The Wilsons may be able to seek legal recovery due to potential misrepresentation and non-disclosure of material facts regarding the property's condition and upcoming regulations which could invalidate their genuine assent.
Step-by-step explanation:
The Wilsons' case involves issues of genuine assent, non-disclosure, and real estate practices. The undisclosed mold issue and the passage of a new ordinance shortly after closing could potentially constitute a basis for legal recovery if the sellers or the realtor were aware of these issues and failed to disclose them. The fact that the realtor is part of the city board that approved the ordinance and the evidence of the patchy roof repair could indicate misrepresentation or fraud, thereby undermining the genuine assent required for a valid contract. Since real estate sales often involve an implied warranty of habitability and requirements for disclosure of material defects, the Wilsons might have legal grounds to seek remedy from the seller for the mold, and from the realtor for misinforming them about potential renovation limitations.