Okla. Stat. tit. 12, § 12-110: Injury occurring during fifth year after substantial

completion.

Notwithstanding the provisions of Section 1 of this act, in the

case of such an injury to property or the person or such an injury

causing wrongful death, which injury occurred during the fifth year

after such substantial completion, an action in tort to recover

damages for such an injury or wrongful death may be brought within

two (2) years after the date on which such injury occurred

(irrespective of the date of death) but in no event may such an

action be brought more than seven (7) years after the substantial

completion of construction of such an improvement.