In 1950 and 1956 McDowell Smith was called on again to add another large building to the complex. Sargood Hall, named after a major benefactor, extends at right angles from the southern reach of the Castle Street range to form the south flank of the interior quadrangle. This too is in red brick in the Domestic Tudor style which by this time, after the second world war, represented a bold and expensive decision in New Zealand. The whole project appears to have cost something more than 25,000 pounds. The building is free standing with a narrow passage between it and the Castle Street range. It is two storeyed. Its principal, north face has a central break front with a pleasingly modelled entrance and the Hall's name in raised relief in a stone fascia above. There are also forward reaching fronts at either end of the main elevation.