OPINION
Opinion by
In this appeal from a summary judgment, Hussein and Aida Haidar contend the trial court erred in dismissing their claims against Nortex Foundation Designs, Inc. and Jerry L. Coffee, P.E. Nortex and Coffee moved for summary judgment on two grounds, including that all claims asserted against them were barred by the applicable statutes of limitations. We conclude the Haidars failed to show the trial court erred in holding their claims were barred by limitations. Ac *926 cordingly, we affirm the trial court’s judgment.
The Haidars’ petition in this case alleges they purchased a home in 2001 from Grand Homes 2000 L.P. The home’s foundation was designed by Nortex and Coffee. The Haidars filed suit against Nortex and Coffee on January 13, 2005 contending the foundation was defectively designed or constructed. They asserted causes of action for negligence, breach of warranty, and violations of the Deceptive Trade Practices Act. Nortex and Coffee answered and pleaded the affirmative defense of limitations as a bar to all the Haidars’ claims. In response, the Haidars alleged the limitations period was tolled by the discovery rule. The Haidars contended they did not discover, and could not with reasonable diligence have discovered, their injury before the limitations period expired.
As stated above, Nortex and Coffee moved for summary judgment on the limitations defense. Because the Haidars pleaded the discovery rule, Nortex and Coffee bore the burden both of conclusively establishing the limitations defense and negating application of the discovery rule.
See Jennings v. Burgess,
The Haidars’ negligence and DTPA claims are governed by a two-year statute of limitations.
See
Tex. Civ. Prao. & Rem.Code Ann. § 16.003 (Vernon Supp. 2007); Tex. Bus. & Com.Code Ann. § 17.565 (Vernon 2002). Likewise, because the Haidars did not have a contractual relationship with either Nortex or Coffee, their cause of action for breach of warranty was in the nature of a tort claim and governed by a two-year statute of limitations.
1
See Black v. Wills,
Nortex and Coffee presented summary judgment evidence to show that their design for the foundation of the Haidars’ home was completed on March 21, 2001. The summary judgment evidence also showed that, on May 7, 2002, the Haidars sent a letter to Grand Homes’ warranty department stating they had “foundation problems that need to be addressed immediately” and asking Grand Homes to send a foundation specialist to inspect the house. Approximately two weeks later, the Haidars sent a second letter to Grand Homes to “stress the urgency of [the] matter” and stated “the cracks in the walls [were] widening.”
For purposes of the discovery rule, “discovery” occurs when a plaintiff has knowledge of such facts as would cause a reasonably prudent person to make an inquiry that would lead to discovery of the cause of action.
See L.C. v. AD.,
Hussein Haidar testified by affidavit that when he informed Grand Homes of the problems they were experiencing with the foundation in 2002, he was told by both Grand Homes and Coffee that the conditions were the result of normal settling for new construction. The summary judgment record also contains a report created by Blake Wilson, an engineer hired by Grand Homes to investigate the condition of the Haidars’ foundation. In Wilson’s report dated February 5, 2003, he states the movement of the foundation is within normal range. In a single sentence in their brief on appeal, the Haidars assert that Nortex and Coffee failed to meet their burden to negate the application of the discovery rule because they failed to show that rebanee on the statements made by Wilson and Coffee was unreasonable. The Haidars make no argument and cite no authority to support this assertion. The Texas Rules of Appellate Procedure require that an appellant’s brief “contain a clear and concise argument for the contentions made, with appropriate citations to authorities and to the record.” Tex.R.App. P. 38.1(h);
Kang v. Hyundai Corp.,
Furthermore, the Haidars’ argument misplaces the burden of proof. Nor-tex and Coffee produced sufficient summary judgment evidence to both establish the accrual date of the Haidars’ cause of action and demonstrate that the Haidars knew or should have known of the facts giving rise to their claims within the limitations period. It was the Haidars’ burden, therefore, to raise a fact issue concerning avoidance of limitations. The Haidars do not assert, and did not assert in response to the motion for summary judgment, that Nortex or Coffee fraudulently concealed the facts forming the basis of their claims.
See KPMG Peat Mar-wick v. Harrison County Hous. Fin. Corp.,
Because the Haidars have failed to show the trial court erred in dismissing their claims on the ground they were barred by the applicable statutes of limitations, it is unnecessary for us to address the remaining issues raised in the Haidars’ appeal. We affirm the trial court’s judgment.
Notes
. The Haidars did not dispute in their response to the motion for summary judgment or on appeal that their claim for breach of warranty was subject to a two-year limitations period.
