A council that grants development consent and building approval for land within the 25 ANEF contour without noise attenuation conditions, and issues s 149 certificates understating the noise exposure forecast, is liable in negligence to subsequent purchasers who would not have purchased had the certificates been accurate. Subsequent noise exposure forecasts showing reduced affectation do not negate losses suffered at the date of purchase where those forecasts are uncertain and have not been formally adopted — they are not the inevitable manifestation of an inherent characteristic of the land as required by HTW Valuers v Astonland. Interest under s 83A of the District Court Act 1973 is properly awarded on damages including the interest component of consequential losses.
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