From George Bush Intercontinental Airport:
To park at 4 Houston Center garage, turn right on Caroline Street. Street parking is also available in the office's adjacent lot by turning right off McKinney Street onto LaBranch Street.
From William P. Hobby Airport:
Street level parking is available on the right just past the Dallas Street intersection. For garage parking, continue on Austin Street, turn left on McKinney Street, then go left on Caroline Street and enter the 4 Houston Center garage on the left.