A few hints on the years would help.
Your fathers year of birth and month will help and was he the eldest or the youngest.
Depends on the years as to where to look.
House numbers in census returns, they are numbered, but not on most of the doors, it just I dentified the house.
There wasn't any Teehan in James Green in 1901.
In 1911 a John Kennedy lived at number 23.