JUSTICE MARTIN VILLARAMA, JR.: PAROL EVIDENCE RULE

Under the general rule in Section 9 of Rule 130 of the Rules of Court, when the terms of an agreement were reduced in writing, as in this case, it is deemed to contain all the terms agreed upon and no evidence of such terms can be admitted other than the contents thereof. Rudlin argues that under Section 9, Rule 130, a party may present evidence to modify, explain or add to the terms of the written agreement if it is put in issue in the pleading, "[t]he failure of the written agreement to express the true intent and the agreement of the parties thereto." Assuming as true Rudlin’s claim that Exhibit "7" failed to accurately reflect an intent of the parties to fix the total contract price at P6,006,965.00, Rudlin failed to avail of its right to seek the reformation of the instrument to the end that such true intention may be expressed.

Evidence of a prior or contemporaneous verbal agreement is generally not admissible to vary, contradict or defeat the operation of a valid contract. (Lapulapu Foundation, Inc. v. Court of Appeals, 466 Phil. 53, 62 (2004), citing MC Engineering, Inc. v. Court of Appeals, G.R. No. 104047, April 3, 2002, 380 SCRA 116, 137).

“SEC. 9. Evidence of written agreements. — When the terms of an agreement have been reduced to writing, it is considered as containing all the terms agreed upon and there can be, between the parties and their successors-in-interest, no evidence of such terms other than the contents of the written agreement.

However, a party may present evidence to modify, explain or add to the terms of the written agreement if he puts in issue in his pleading:

(a) An intrinsic ambiguity, mistake or imperfection in the written agreement;

(b) The failure of the written agreement to express the true intent and agreement of the parties thereto;

(c) The validity of the written agreement; or

(d) The existence of other terms agreed to by the parties or their successors-in-interest after the execution of the written agreement.

The term "agreement" includes wills” (emphasis supplied).

Rudlin cannot invoke the exception under (a) or (b) of the above provision. Such exception obtains only where "the written contract is so ambiguous or obscure in terms that the contractual intention of the parties cannot be understood from a mere reading of the instrument. In such a case, extrinsic evidence of the subject matter of the contract, of the relations of the parties to each other, and of the facts and circumstances surrounding them when they entered into the contract may be received to enable the court to make a proper interpretation of the instrument." (Seaoil Petroleum Corporation v. Autocorp Group, G.R. No. 164326, October 17, 2008, 569 SCRA 387, 396-397, citing Ortañez v. CA, 334 Phil. 514, 519-520 (1997) & Heirs of Amparo del Rosario v. Aurora Santos, et al., 194 Phil. 670, 687 (1981).

Under the fourth exception, however, Rudlin’s evidence is admissible to show the existence of such other terms agreed to by the parties after the execution of the contract. But apart from the Bar Chart and Cash Flow Chart prepared by FBC, and the testimony of Rodolfo J. Lagera, no competent evidence was adduced by Rudlin to prove that the amount of P6,006,965.00 stated therein as contract price was the actual decreased amount that FBC and Rudlin found mutually acceptable. As to the affidavits executed by Architect Quezon and his associate Roberto R. Antonio, the same do not serve as competent proof of the purported actual contract price as they did not testify thereon. Significantly, the June 5, 1986 Letter-Agreement did not at all mention the total contract price. Likewise, there is nothing in the various letters sent by Rudlin to FBC while construction was in progress and even subsequent to the execution of the said Letter-Agreement indicating that Rudlin corrected the contract price of P6,933,268.00 which FBC had repeatedly mentioned in its letters and documents (FINANCIAL BUILDING CORPORATION vs. CORPORATION, BLOOMFIELD EDUCATIONAL FOUNDATION, INC., RODOLFO J. LAGERA, MA. ERLINDA J. LAGERA AND JOSAPHAT R. BRAVANTE, RUDLIN INTERNATIONAL, G.R. No. 164186, October 4, 2010, VILLARAMA, JR., J.).