Title
Security Bank and Trust Co. vs. Court of Appeals
Case
G.R. No. 117009
Decision Date
Oct 11, 1995
Contractor Ferrer incurred P300K extra costs due to material price hikes; SBTC refused payment. Courts ruled SBTC liable for unjust enrichment, affirming Ferrer's claim with modified attorney's fees.

Case Summary (G.R. No. 117009)

Contractual Background

The February 4, 1980 contract fixed the project price at ₱1,760,000 and mandated completion within 200 working days. Article IX provided that “if increase in prices of construction materials and/or labor … supervene through no fault of the contractor … OWNER shall equitably make the appropriate adjustment on mutual agreement of both parties.”

Trial Court Proceedings

Ferrer promptly notified SBTC of the excess expenses, supported by invoices, receipts, payrolls, and other documents. After independent verification, SBTC’s own consultants recommended settling for ₱200,000, but SBTC refused payment, insisting no mutual agreement had been reached. Ferrer sued for breach of contract with damages. The Regional Trial Court awarded him:
a) ₱259,417.23 plus 12% annual interest from August 15, 1980;
b) ₱24,000 actual damages;
c) ₱20,000 moral damages;
d) ₱20,000 exemplary damages;
e) attorney’s fees equivalent to 25% of the principal; and
f) costs of suit.

Appellate Ruling

The Court of Appeals affirmed, holding that Ferrer had satisfactorily proven his claim and that SBTC’s denial of liability conflicted with the equitable‐adjustment clause and general principles against unjust enrichment.

Issues on Review

Petitioners argued that under Article IX no obligation to pay excess costs arose without a “mutual agreement,” and that enforcing Ferrer’s claim violated their constitutional right against impairment of contracts.

Applicable Law

1987 Constitution – Contract Clause (non‐impairment of obligations)
Civil Code of the Philippines (1987):
• Article 22 (prohibiting unjust enrichment)
• Article 1182 (invalidating conditions dependent solely on the debtor’s will)

Supreme Court Analysis

1. Mutual agreement as a contractual condition was effectively at SBTC’s sole will: Ferrer had every reason to agree to recover his proven expenses, rendering the condition void under Article 1182.
2. SBTC’s own admission that excess costs were proper (recommendation to pay ₱200,000) and Ferrer’s documentary proof established unjust enrichment if SBTC

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