Listed as a 4-3 but really a 3-2

[Ginger Spurlin]

Is the seller/agent accountable if they list a property as a 4-3 but the renovation/addition of the fourth bed and third bath was not permitted work, therefor,  it is still a 3-2 in the tax records and the appraiser didn't count it? Also affects the h/c sq ft.  Also should the buyer agent be responsible to discover that for their client?