Okla. Stat. tit. 12, § 12-109: Limitation of action to recover damages arising from

design, planning or construction of improvement to real property.

No action in tort to recover damages

(i) for any deficiency in the design, planning, supervision or

observation of construction or construction of an improvement to

real property,

(ii) for injury to property, real or personal, arising out of

any such deficiency, or

(iii) for injury to the person or for wrongful death arising out

of any such deficiency,

shall be brought against any person owning, leasing, or in

possession of such an improvement or performing or furnishing the

design, planning, supervision or observation of construction or

construction of such an improvement more than ten (10) years after

substantial completion of such an improvement.