Oral variation of residential building contract
37The principal matter agitated on appeal in the District Court was the rejection by the Tribunal of the claim made by Mr Wright (alone) for damages, being the alleged cost of rectifying building work done pursuant to unauthorised unwritten variations to the plans and specifications and in breach of the statutory warranty implied into the contract by s 18B(1)(a) of the Home Building Act 1989 (NSW). For reasons set out below, her Honour was correct not to discern error of law on the part of the Tribunal in dealing with this claim. If a different conclusion had been reached, it would have been necessary to consider whether this Court should decline relief in the exercise of its discretion, in circumstances where only one of four contracting parties (all of whom, as the Tribunal found, consented to the variations) sought relief against the builder for acting in accordance with their joint oral instructions.
38Mr Wright contended before the Tribunal that he was not bound by any oral variation of the residential building contract. That, it was submitted, was because cl 14 of the contract required any variation to be in writing. However, that was not so. Clause 14 had nine sub-clauses. The first, (a), stated that the works might be varied in certain ways: it was not restrictive. The second, (b), required the builder's consent to a variation, which consent was not to be unreasonably withheld. The third stated:
"(c) (i) If the Builder agrees to undertake a variation, the variation should be detailed in writing and signed by the Owner or the Owner's agent.
(ii) The Builder may require, prior to the execution of any variation, that the Owner produce evidence, satisfactory to the Builder, of the Owner's capacity to pay for the variation."
39The remaining six sub-clauses of cl 14 involved the obligation of the builder to advise the owner in writing of the value of the variation and provided for the manner in which it might be valued and paid for.
40The language of cl 14 was not entirely felicitous, but it envisaged that the owner might request a variation, to which the builder might consent. On one view, if the builder consented, it was obliged to carry out any extra work: sub-cl (b). True it is that, pursuant to sub-cl (c), if the builder agreed to undertake the variation it should be detailed in writing and signed by the owner, but that provision did not require the builder to reduce the variation to writing, nor did it state that the builder would be relieved of its obligation if the variation were not reduced to writing.
41Sub-clause (d) was in the following form:
"(d) The Builder is to [sic], within a reasonable time of receipt of instructions, to execute a variation, notify the Owner in writing of the value of the variation."
If the second comma were treated as otiose, the effect of sub- cl (d) would be to oblige the builder to provide a written quotation within a reasonable time of receiving instructions to carry out the work.
42The Senior Member of the Tribunal concluded that cl 14 did not provide an exclusive regime for varying the contract. That was a reasonable construction, bearing in mind the terms of cl 14, its apparent purpose, and the range of circumstances which could arise. For example, sub-cll (b) and (d) appeared to assume that the variation would involve an increase in the scope of the works and the cost thereof. If, on the other hand, the owners were to seek to delete a requirement, for example, to fit out a kitchen or bathroom, it is not at all clear that cl 14 required the variation to be in writing.
43The applicant (Mr Wright in this case) sought to argue that ss 7 and 10 of the Home Building Act rendered an oral variation of a contract to undertake residential building work invalid and ineffective at law. However, that misstates the statutory requirements. Section 10 provides that the builder is not entitled to damages or to enforce any other remedy in respect of a breach of contract if the contract is not in writing. Section 10(1) also provides that the contract is "unenforceable" by the builder. It continues:
"However, the person is liable for damages and subject to any other remedy in respect of a breach of the contract committed by the person."
44The reference to "the person" is to a person who contracts to do any residential building work, namely the builder. The fact that the builder remains liable for damages and other remedies for breach of contract demonstrates that a contract which is not in writing is nevertheless a valid contract, enforceable by the other party. As the Tribunal correctly noted, even if an oral variation cannot be enforced by the builder, so as to be able to recover payment under the contract for the work done, the builder could presumably be sued for a breach of warranty in respect of a failure to undertake the work in a proper and workmanlike manner and in accordance with the plans and specifications set out in the (oral) agreement: Home Building Act , s 18B. In the present case, the applicant sought to enforce the written contract on the basis that there was no valid variation. However, if the contract had in fact been varied, orally, the Home Building Act gives the owner no entitlement to enforce a non-existent obligation.
45Section 7E, which was introduced into the Home Building Act in November 2001, permits regulations to make provision for clauses to be included in a particular contract or class of contracts and, if they do, an inconsistent term of the contract will be unenforceable to the extent of the inconsistency. It appears to have been assumed by the parties that cl 59 of the Home Building Regulation 1997 was in force when the contract was signed on 20 July 2002. That clause required that residential building work contracts include the conditions set out in Part 1 of Schedule 3A including the following:
" 1 Plans and specifications
(1) All plans and specifications for work to be done under this agreement, including any variations to those plans and specifications, are taken to form part of this agreement.
(2) Any agreement to vary this agreement, or to vary the plans and specifications for work to be done under this agreement, must be in writing signed by each party to this agreement."
46However, Schedule 3A was inserted by the Building Legislation Amendment (Quality of Construction) Act 2002 (NSW), Schedule 2, Item 2.2, which only commenced on 16 February 2004, some 18 months after the contract was signed. Even if such a clause had been incorporated into the contract, while it might be thought that, in its terms, it prevented any form of variation not in writing, it should not be so construed. First, a variation can occur, as some contractual provisions acknowledge, by the imposition of legal requirements which may be inconsistent with the express terms of the contract. Second, the purpose and effect of this provision must be read in the statutory context, which does not render a contract invalid or unenforceable on both sides if not in writing.
47Once the amendment had been approved by the Council, the builder was required to comply with the modified plans, pursuant to cl 12 of the contract. That provision had its own requirements for written notice, but whether or not they applied in the present circumstances was not addressed before the Tribunal, nor was the effect of non-compliance.
48Supposing that the specifications as varied were those which were sought to be enforced, it would be remarkable if the owner had no claim against the builder in respect of defective work or even some broader failure to comply with the specifications, for example, by failing to provide floors over a concrete slab. Such a construction of the statute must be rejected. Equally, a construction which allows an owner to decide, after the work has been completed, which set of instructions are to be enforced must also be rejected.
49This was, in substance, the reasoning accepted by Sidis DCJ:
"18. The result, on the plaintiffs' argument, was that the variations were to be ignored for the purposes of the plaintiffs' claim of breach of warranty. The took this position notwithstanding that the parties to the contract agreed to variations to the plans and specifications, the work was completed, subject to some minor defects, in accordance with the plans and specifications as varied, the defendant was paid for that work with the approval of the parties to the contract and failure to complete the works in accordance with the plans and specifications as varied would put the defendant in breach of the contract.
19. This result demonstrates the fallacy in the plaintiffs' argument. The defendant would be liable for damages for breach of warranty if it complied with the agreement reached to vary the plans and specifications or liable for damages for breach of contract if it did not."
50This reasoning should be accepted. Even if it were not, the Court should not intervene in the exercise of its discretion, for four reasons. First, even if legally erroneous, the fact that the applicant agreed to and paid for the work as varied demonstrates that no substantial injustice has been caused if there were an error of law in the analysis in the Court below. Secondly, Mr Wright cannot seek relief in respect of building work undertaken pursuant to a contract where he is only one of four contracting parties on his side of the bargain. Thirdly, although accepting that rectification is no longer a practical option (following subdivision of the property and without the consent of the other owners), he claimed that he was entitled to damages in an amount calculated to be the cost of rectification. That seems not to be legally tenable, although it was an argument run in the District Court: at [17]; cf Bellgrove v Eldridge [1954] HCA 36; 90 CLR 613 and Tabcorp Holdings Ltd v Bowen Investments Pty Ltd [2009] HCA 8; 236 CLR 272. On one view, it was in substance an attempt to recover moneys paid under an ineffective contract where there had been no total failure of consideration: free acceptance of the work done and materials supplied gave rise to the obligation to pay and therefore denied the right to recover any (reasonable) payment in fact made: Pavey & Matthews Pty Ltd v Paul [1987] HCA 5; 162 CLR 221 at 257 (Deane J). Fourthly, if some other claim were tenable, there is no reason why Mr Wright should be allowed a further opportunity to prove loss, in circumstances where no loss (other than that which has been recovered for defective work) has yet been either pleaded or proved.