Kenmark Builders (Pvt) Ltd (In liquidation represented by T Grimmel) and Others v Zimbabwe Diamond Technology Centre (Pvt) Ltd

The seven plaintiffs (construction contractors and professional consultants including builders, architects, engineers, and quantity surveyors) were engaged by the defendant to construct the Zimbabwe Diamond Technology Centre at Haydon Estates in Mount Hampden. The plaintiffs claimed varying amounts for services rendered and materials supplied. The first plaintiff (Kenmark Builders) entered into a cost-plus contract with the defendant in July 2010 under a Memorandum of Understanding emphasizing urgency. The defendant paid initial establishment fees totaling $562,000. The project initially involved 7 buildings but was expanded to include additional factory units, a canteen, medical centre, gate houses, and boundary walls. The plaintiffs claimed the total project cost was approximately $24 million based on bills of quantities and professional assessments. The defendant contended the entire budget was only $4 million and that all plaintiffs agreed to this budget. The plaintiffs ceased work in late 2010/early 2011 due to non-payment, after which Msasa Builders completed the construction. The defendant refused to pay the outstanding claims totaling over $4 million collectively.

• Whether valid contracts existed between the defendant and each of the plaintiffs
• Whether each plaintiff rendered services to the defendant in terms of their respective contracts
• Whether the amounts claimed by each plaintiff were legitimate, due and payable
• Whether there was a breach of the agreements by the defendant
• Whether the parties agreed to a total project budget of $4 million or approximately $24 million
• Whether the plaintiffs were aware of and bound by the alleged $4 million budget limit

The court ordered the defendant to pay each plaintiff the full amounts claimed with interest at the minimum bank lending rate plus 2% per annum from the dates when certificates/invoices became due: First plaintiff: US$1,623,954.11; Second plaintiff: US$1,011,683.03; Third plaintiff: US$593,254.91; Fourth plaintiff: US$404,987.63; Fifth plaintiff: US$442,199.55; Sixth plaintiff: US$263,161.04; Eighth plaintiff: US$51,837.74. The defendant was ordered to pay costs of suit for all plaintiffs. The court declined to grant the attachment order sought in the draft order as no submissions were made on this aspect.

The binding legal principles established are: (1) A client cannot unilaterally impose budget limitations on construction contracts after design work has been completed and approved, particularly when such limitations were not communicated at contract formation; (2) When the scope of construction work is substantially varied by adding additional buildings and structures, the original budget cannot remain fixed and must be adjusted accordingly; (3) Professional consultants engaged on percentage-of-project-cost fee structures are entitled to calculate their fees based on the actual project costs, not on unilaterally declared budget limits unknown to them at the time of contracting; (4) In construction disputes, properly certified work by independent quantity surveyors, architects, and engineers appointed by the client carries significant evidentiary weight; (5) The civil onus in contract claims is discharged on a balance of probabilities when plaintiffs demonstrate: (a) the existence of contractual relationships; (b) performance of services; (c) proper quantification of claims through professional calculations; and (d) non-payment by the defendant; (6) Acknowledgements of debt signed by authorized representatives or associated entities conducting business on behalf of a company are binding on that company.

The court made several non-binding observations: (1) It noted the lack of credibility in the defendant's representative's testimony regarding the budget, particularly the inconsistency between claiming a $4 million total budget while publicly stating $20 million project costs and comparing the project to a Botswana facility costing approximately $12 million; (2) The court commented adversely on the defendant's failure to call Colonel Mugari, the project manager who allegedly attended site meetings, noting "it appears that Colonel Mugari may not have co-operated"; (3) The court observed that the defendant's administrator witness Belinda Chizu sat in court throughout most proceedings, stating "not much weight is to be attached to her evidence" and later remarking "The relevance of Belinda Chiza's evidence remained a mystery to the court"; (4) The court noted that proper practice would have required the defendant to formally approve any work outside the alleged budget if such a budget existed; (5) The court observed that "time was of the essence" justified the plaintiff proceeding with work before the formal contract was signed, but implied this created risks for both parties; (6) The court commented that the defendant "did not take" professional advice warning against the inadequacy of the $4 million budget; (7) The court noted it was not addressed on the prayer for attachment of the defendant's rights and interest in the Centre or on the basis for costs on a higher scale, suggesting these matters required specific legal submissions.

This case is significant in Zimbabwean construction and commercial law for several reasons: (1) it clarifies that unilateral budget limitations imposed by a client after design work is completed and not communicated at contract formation cannot bind contractors and consultants; (2) it establishes that substantial variations to project scope (nearly doubling the number of buildings) necessarily affect budget obligations regardless of initial estimates; (3) it demonstrates the evidentiary weight courts give to professional certifications, valuations, and site meeting minutes in construction disputes; (4) it reinforces that cost-plus contracts require transparent communication of budget constraints; (5) it confirms that acknowledgements of debt signed by authorized representatives bind companies; (6) it illustrates the consequences of proceeding with construction on an urgent basis without finalized written contracts; and (7) it provides guidance on the standard of proof required to establish quantum meruit claims in construction contexts.