The existing reviews of this film identify many of the points which make this a really enjoyable way to spend 45 minutes. The film is a wonderful time capsule, showing how houses were built in the UK in the 1960s. The film has a lovely collection of familiar faces from the world of British comedy.
What has not been mentioned is the sound track. This is one of the iconic "silent" comedy films of the 1960s, two of the others include San Ferry Ann and The Plank, but this is probably the original and best. The score for this film was by the accomplished Ron Goodwin, who found most fame for composing for war films (633 Squadron and Battle of Britain) and Those Magnificent Men in their Flying Machines. The music adds greatly to this film, with various themes being used for each of the characters. The music is well arranged to fit in with what is happening on the screen, and adds to the humour. Ron would later go on to conduct the music for San Ferry Ann and to compose the music for The Early Bird (a Norman Wisdom comedy which has a near 15 minute 'silent' introduction).
This is a great little film and highly recommended.