COMPUTER software products company, JBA International, is to rent the last available office space in Park House, at North Circular Road, Dublin 7. The company will be paying a rent of £50,000 for the accommodation which equates to £8.50 per square feet and £400 for car-parking spaces. Park House is currently producing a rent roll of almost £1 million for its British and US owners. Colliers Jackson-Stops are the letting agents.