Completed last September, Koll Center Irvine North at 1901 Main St. in Irvine is now 57 percent leased thanks to two large lease-ups. The 8-story, 171,451-square-foot, Class A building is Phase II of the Koll Center office towers. GE Capital signed a lease for 22,470 square feet, the entire 7th floor, for five and a half years. Chris Deason with Voit Commercial Brokerage represented GE Capital. Salomon Smith Barney, represented by Dave Kinney, who was with Grubb & Ellis at the time of the lease, signed a 10-year lease for 22,464 square feet, the entire 8th floor. Both firms plan to occupy their new homes in April. Alliance Bank also signed up to occupy 7,575 square feet on the first floor. Chris Deason of Voit represented Alliance Bank. John Weiner and Jeff Morgan with CB Richard Ellis represented the landlord, Koll Development Co., in all three transactions.