The Clock House was build c. 1855, by Sir Denham Orlando Jephson. He was an amateur architect who is said to have designed this house after he had returned from an alpine holiday. The Clock was brought from the tower of the Old Mallow Castle. The bell was cast at Millerd St., Cork. The Clock House is a fine example of a half-timbered Tudor construction. The bell tower became dangerous and was removed c. 1970.

The Clock House was originally a licensed premises. The first tenant was Mr. Michael Nunan. It is presently occupied by Colman Dalton, a firm of Accountants and Tax Consultants. The upper floor sometimes houses Art Exhibitions. In front of the Clock House once stood a water-trough over which was the statue of  "The Little Man". This was presented to the town by the Right Honourable Judge Johnson.

Judge Johnson was M.P. for Mallow in 1880 and in gratitude to the town's people he presented the town with a water-trough complete with the Little Man and overhead gaslight. This was a distinguished landmark for many years, but it was unable to survive the hazards of modern traffic. The Little Man now resides in the Spa Park. At the Clock House there he stood on guard, A friend to one and all. He never spoke, nor said a word nor issued forth a call.

Restoration of the Clock House began in September 1996 with the bell tower being returned to its lofty eminence. Renovation of the entire building was undertaken. Now in 2008/2009 the Clock House is due for another renovation and when complete should see the Clock House restored to its former glory as a focal point for the town.