Atel Capital Group signed a lease to occupy 19,523 square feet on the 6th floor at 600 California St. in San Francisco's Financial District. Atel is expanding from 235 Pine St., where the full service finance company occupies floors 6 through 8 totaling approximately 24,900 square feet. The class-A office space was near move-in condition featuring a server room, a training center, conference rooms and open areas. Built in 1990, the 20-story building currently has direct space available for entire floors throughout the building. Rob Dumas of Grubb & Ellis represented the tenant. Nick Slonek and Emily Price of CB Richard Ellis represented the landlord, Deka Immobilien Investments.