Okla. Stat. tit. 14A, § 3-310
In the case of a transaction in which a mortgage, deed of trust, or equivalent consensual security interest is created or retained in the debtor's principal dwelling to finance the acquisition or initial construction of that dwelling, if that transaction is also subject to the Real Estate Settlement Procedures Act, 12 U.S.C. §§ 2601 et seq., good faith estimates of the disclosures required by this part shall be made in accordance with the rules of the Administrator concerning estimates before the credit is extended, or shall be delivered or placed in the mail not later than three (3) business days after the lender receives the debtor's written application, whichever is earlier. If the disclosure statement furnished within three (3) days of the written application contains an annual percentage rate which is subsequently rendered inaccurate within the meaning of Section 14A-3-304(5) (a) and (c), the lender shall furnish another statement at the time of settlement or consummation.
Laws 1969, HB 1001, c. 352, § 3-310, emerg. eff. July 1, 1969; Amended by Laws 1982, SB 643, c. 335, § 44, eff. October 1, 1982.