Dear Master Cecil,  I wish you well. Could you kindly help to differentiate between a period 7 or period 8 house. How does one  determine a house as period 7 or period 8? The HDB flat that I am currently living is built in 1989, I moved in 2011,  without much renovation, except changing the toilet door, and the toilet seat.  Is this still consider as period 7 or a period 8 house? Kindly advise if possible. Thank you very much for your  kind advise.; Greatly app