First Foundation Inc., an Irvine-based holding company of both First Foundation Bank and a wealth advisory subsidiary, said it plans to open its third banking office in the University Towne Center area in October.

The new office at 4510 Executive Drive includes both a bank branch and advisory services, and will have 12 employees, a company spokeswoman said.

First Foundation was founded in 1990 as the Keller Group and started a commercial bank in 2007. The bank has $456 million in assets, while the advisory unit has $1.7 billion under management, the spokeswoman said.

In addition to its Irvine headquarters, First Foundation Bank has two other offices in Pasadena and La Quinta. The company tripled its employment in the past three years to about 100.

— Mike Allen