The first document is a certificate gifted on behalf of the ‘City & guilds of London Institute incorporated by the royal charter department of technology’. Dated 1909, the signature of holder gives us the first mention of the name ‘Wilfred Lawson Sagar’. Given that workers around the late Victorian era would typically enter careers around the age of 14, this wouldn't give enough time to have afforded this house by the 1920's when we presume it was built, given it's size it would simply have been out of the question.