The question presented in this case is whether a negligent construction action can be maintained by subsequent buyers against *215the builder of a backyard retaining wall. We hold that it can and reverse the trial court’s grant of summary judgment.
On or about 27 August 1984 Charles and Kathleen Gindhart contracted to buy a home at 11838 Post Ridge Court from Don Galloway Homes, Inc. (“Galloway”), the home’s builder. At the time they made the contract, the house was partially constructed. Because the Gindharts were concerned that the gradient of the backyard might cause a mudslide, they conditioned the sale on construction of adequate mudslide protection. Pursuant to this condition, Galloway built a backyard retaining wall using railroad ties. The sale closed on 19 October 1984.
Plaintiffs Richard and Christine Floraday purchased this house from the Gindharts on 24 August 1987. On or about 29 June 1990, as the Floradays prepared to sell the home, a structural inspection of the property uncovered problems with the retaining wall. On 12 September 1990 the Floradays sued Galloway for damages arising from negligent construction of the retaining wall. The Floradays characterized the wall as “infested with termites, improperly treated for ground contact, improperly anchored, and on the verge of collapse,” and as “quite dangerous.” Galloway moved for judgment on the pleadings. Its motion was granted on 25 June 1992. Plaintiffs appeal.
Since the court considered affidavits and photographs as well as the pleadings, we will treat plaintiff’s appeal as an appeal from summary judgment under Rule 56. N.C. Gen. Stat. § 1A-1, Rule 12(c); Battle v. Clanton, 27 N.C. App. 616, 220 S.E.2d 97 (1975), disc. rev. denied, 289 N.C. 613, 223 S.E.2d 391 (1976). Thus, we must determine whether there is a genuine issue as to any material fact and whether the movant is entitled to judgment as a matter of law. Oliver v. Roberts, 49 N.C. App. 311, 271 S.E.2d 399 (1980), cert. denied, 276 S.E.2d 283 (1981); Smith v. Smith, 65 N.C. App. 139, 308 S.E.2d 504 (1983).
The question before us is whether a subsequent purchaser of a residential home has a cause of action against the original builder for the builder’s negligent construction of a retaining wall adjacent to the house. The answer depends on whether the duty of reasonable care in construction owed by a home builder to a subsequent home purchaser extends beyond the house itself.
*216In Oates v. JAG, Inc., 314 N.C. 276, 333 S.E.2d 222 (1985), our Supreme Court ruled that a subsequent purchaser may sue the builder of a house for negligent construction. See also Dellinger v. Lamb, 79 N.C. App. 404, 339 S.E.2d 480, disc. rev. denied, 317 N.C. 702, 347 S.E.2d 39 (1986); Evans v. Mitchell, 77 N.C. App. 598, 335 S.E.2d 758 (1985), disc. rev. denied, 316 N.C. 376, 342 S.E.2d 893 (1986). In other jurisdictions, see Coburn v. Lenox Homes, Inc., 378 A.2d 599 (Conn. 1977); Moxley v. Laramie Builders, Inc., 600 P.2d 733 (Wyo. 1979); Brown v. Fowler, 279 N.W.2d 907 (S.D. 1979). In Oates, plaintiffs were the third owners of a house who discovered conditions characterized as “defective, dangerous and unsafe,” including a faulty drain pipe, use of non-grade-marked lumber, noncompliance with some North Carolina Uniform Residential Building Code weight bearing requirements, “improper and insufficient nailing on bridging and beams, and faulty and shoddy workmanship.” 314 N.C. at 277, 333 S.E.2d at 224. They sued the builder for negligent construction of the house. The Oates Court pointed out that a suit in negligence does not require contractual privity between the parties:
The duty owed by a defendant to a plaintiff may have sprung from a contractual promise made to another; however, the duty sued on in a negligence action is not the contractual promise but the duty to use reasonable care in affirmatively performing that promise. 314 N.C. at 279, 333 S.E.2d at 225.
Thus, the proper inquiry is not whether the parties had a contract, but whether “plaintiff and defendant are in a relationship in which the defendant has a duty imposed by law to avoid harm to the plaintiff.” Id. The Court concluded that the law does impose a duty of reasonable care between a home builder and a subsequent purchaser. In finding this duty, the Court recognized that a home is unlike any other consumer purchase, such as a car or furniture. It reasoned that a home is a tremendous financial undertaking and is often the largest single investment a consumer ever makes. At the same time, the typical home buyer is ill-equipped to evaluate the quality of workmanship, especially where defects are hidden from sight. The need for special protection of these investments justifies extending the duty of reasonable care to subsequent purchasers.
The Supreme Court’s rationale informs our reasoning today. The Floradays allege a loss of the investment they made in their *217property that is similar to the loss they would face if the house itself had been damaged. To limit the builder’s duty to the four walls of the house itself would be formalistic and would ignore the reality of the financial risks undertaken by property purchasers. We believe there can be other, related structures on a residential property which are so essential to the use and enjoyment of the house that they should be subject to the same protection as the house itself. Therefore, we hold that a subsequent purchaser of a home has a cause of action against the home’s builder where the builder’s negligence in building a structure on the premises has materially affected the use and enjoyment of the house itself.
In the subject case, there are factual questions as to whether the alleged damage to the retaining wall has materially affected the use and enjoyment of the house and if so, whether it was due to a breach of duty by Galloway. Accordingly, summary judgment is reversed.
Reversed.
Chief Judge Arnold concurs.
Judge John concurs in a separate opinion.