The appellant, Willem Pheiffer, occupied a farm owned by Cornelius Johannes van Wyk and his wife pursuant to an oral and later defective written agreement of sale. The agreement was void ab initio, but Pheiffer had effected substantial improvements to the property with the owners’ consent while attempting to secure finance. After Pheiffer failed to raise the purchase price, the Van Wyks cancelled the arrangement and sold the property to the third respondent, Marde (Pty) Ltd. When eviction proceedings were instituted, Pheiffer resisted eviction by asserting an improvement (enrichment) lien. The High Court ordered him to vacate the property upon security being furnished for his enrichment claim, which security took the form of a bank guarantee issued on behalf of the third respondent. Pheiffer appealed, contending that security furnished by a non-owner was inadequate and could not substitute his lien.