An oral variation to a written residential building contract under the Home Building Act 1989 (NSW) is unenforceable by the builder under s 10 but is not void or wholly ineffective. The builder may rely on the oral variation defensively, and the owner cannot claim damages for the builder's failure to comply with the original written specification where the owner agreed to the variation. The position is analogous to contracts unenforceable under the Statute of Frauds.
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