A notarial lease agreement was concluded on 29 June 2004 between Mr Sontsele (lessor) as registered owner of Erf 83, Flagstaff, and 140 Main Street Properties CC (lessee). The lease commenced on 1 July 2004 and was due to terminate on 31 May 2014. The lessee had an option to renew for two further periods of 9 years and 11 months each, exercisable by giving at least six months' written notice. The renewal was subject to the same terms and conditions, save that rental would be determined by agreement based on prevailing market rentals. If parties could not agree on rental, it would be determined by a suitably qualified person appointed by the President of the Cape of Good Hope Estate Agents Board. On 8 August 2013, the lessee exercised its option to renew but did not propose a rental amount. The parties failed to reach agreement on rental before the expiry of the initial lease period on 31 May 2014. The lessee remained in occupation, paying what it unilaterally determined to be market-related rent (R14,000 per month from June 2014, increased to R15,120 from June 2015). The lessor rejected these amounts. When negotiations failed, the lessor's attorney on 31 July 2015 contended that the agreement had expired on 31 May 2014 and gave notice terminating the month-to-month tenancy. The lessee's attorney on 6 August 2015 for the first time suggested referral to a third party in terms of clause 2.2.3.