In June 2006, Rogalla (respondent) sold undeveloped land (Portion 97 of the Farm Brakkloof) to Green Willows (appellant) for R13,250,000. Green Willows intended to develop the property by constructing 80 residential units measuring a minimum of 9,000 square metres plus onsite parking. The written contract (clause 18) provided that the seller warranted written approval by the local authority for the development. Green Willows paid R10,000,000 upon transfer on 18 September 2006 and retained R3,250,000 secured by bank guarantee, payable upon final written approval. The Municipality passed a resolution on 5 May 2006 (the May resolution) imposing conditions for the development, including that a Site Development Plan (SDP) be submitted for approval before building plan approval. On 18 December 2006, the Municipality approved the Revised SDP (the December resolution) subject to certain conditions. Rogalla demanded payment of the retained amount, which Green Willows refused, contending that final written approval had not been granted.