Mr. Oliver fell and was injured when a step tread gave way beneath him as he was descending a wooden stairway located behind his apartment building. He and his wife brought the present action against the owners of the building, alleging that they had failed in their duty to keep the premises and approaches safe for invitees. The trial court granted summary judgment to the defendants, based evi*31dently on a conclusion that Mr. Oliver had equal knowledge of the alleged defect and of the danger presented by it. The Olivers appeal.
According to Mr. Oliver, one side of the tread pulled loose from the nails which had been holding it in place. He testified that for several months prior to the accident he and his wife had complained both to the management and to the city “about the nails pulling out and the boards pulling up on the stairway,” but that nothing was done to correct the defects until over a month after his accident, at which time the entire stairway was rebuilt. With regard to the specific location of the defects he had observed, Mr. Oliver testified as follows: “Q. Where exactly were those nails that you saw pulling out located? Were they on the vertical rise part of the stair or the horizontal platform? A. The horizontal. . . platform and then your railing was, you know, some of it had pulled out and the boards were laying on the ground. Q. So you were not referring to the step treads going up the stairs which fell? A. No, I was talking the platform that you walk on more or less.”
The stairway in question provided the most direct access between the plaintiffs’ apartment and the parking area, which, like the stairway, was located behind the building. There was another stairway located at the front of the building; however, Mr. Oliver testified that to reach the front entrance of the building from the parking lot required walking approximately 250 feet and that, for this reason, he routinely used the back stairway even though he considered it to be unsafe. Held:
“ ‘The true ground of liability of the owner or occupant of property to an invitee who is injured thereon is the superior knowledge of the proprietor of the existence of a condition that may subject the invitee to an unreasonable risk of harm.’ [Cit.] ‘The presumption of the law is that the owner of a lot is acquainted with the condition of his own property, if a natural person, and if an artificial one, that it has such knowledge through its agents and employees.’ [Cit.]” Herrington v. Stone Mtn. Memorial Assn., 119 Ga. App. 658, 661 (168 SE2d 633) (1969). The owner is thus under some duty to inspect for dangerous conditions existing on the premises, whereas the invitee “ ‘is not obliged to inspect the premises to discover latent defects nor even to observe all patent defects.’ ” Id. at 662. See generally Sears, Roebuck & Co. v. Chandler, 152 Ga. App. 427, 428-9 (263 SE2d 171) (1979).
It has been held that “[l]ooking continuously, without intermission, for defects in a floor is not required in all circumstances,” Chotas v. J. P. Allen & Co., 113 Ga. App. 731, 733 (149 SE2d 527) (1966), and that “[k]nowledge [on the part of the invitee] that one part of a floor is defective is not necessarily knowledge that an adjacent part is also defective.” Somers v. Tribble, 115 Ga. App. 282, 284 *32(154 SE2d 620) (1967). It has also been held that “ ‘mere knowledge’ [on the part of the invitee] of the existence of a dangerous or defective condition does not necessarily constitute ‘full appreciation of the risk involved.’ [Cits.]” Atkinson v. Kirchoff Enterprises, 181 Ga. App. 139, 140 (351 SE2d 477) (1986). “ ‘Only in clear and palpable cases, where it appears that one recklessly tests an observed and clearly obvious peril, or voluntarily assumes a position of imminent danger, will he be barred from recovery as a matter of law; otherwise, the question of what negligence, as well as whose negligence is responsible for the injury is a jury question.’ [Cits.]” Herrington v. Stone Mtn. Memorial Assn., supra, 119 Ga. App. at 661.
In view of the evidence that the defendants had been notified repeatedly during the months prior to the accident that the stairway was in need of repair, a jury might reasonably conclude that the defendants were constructively aware of each and every defect therein which would have been revealed by a close inspection. Mr. Oliver, on the other hand, can be charged only with knowledge of those defects which he had actually observed or which were so transparently obvious that his failure to observe them cannot reasonably be excused. See Sears, Roebuck & Co. v. Chandler, supra, 152 Ga. App. at 429. It is certainly not apparent as a matter of law from his testimony that he had previously observed nails pulling loose from the step treads as opposed to the horizontal platform; and even if he had, it would not automatically follow that he had a full appreciation of the danger created by that condition, for he might reasonably have believed that the nails were not actually supporting the treads but merely holding them in place on top of the stringers. For these reasons, we hold that the trial court erred in granting the defendants’ motion for summary judgment. To hold to the contrary under the circumstances of this case would, in effect, be to hold that a landlord may escape liability for personal injuries caused by dangerous conditions existing on his premises to the extent that he has previously ignored complaints by the injured party regarding those conditions. Cf. Richardson v. Palmour Court Apts., 170 Ga. App. 204 (316 SE2d 770) (1984).
Judgment reversed.
Deen, P. J., McMurray, P. J., Benham and Beasley, JJ., concur. Carley, C. J., Birdsong, Sognier, and Pope, JJ., dissent.