Townhouse vs Rowhouse

QUESTION: Sir John, how is a townhouse distinguished from rowhouse?

ANSWER: Townhouses are compact houses, usually 2-3 storeys, with varying designs and attached to adjacent houses, built for high-class residential market. Rowhouse are houses with single design and attached side by side, price is usually asociated with the purpose of providing affordable mass housing. Unlike most of the single detached houses that have open land spaces, the ground floor of a single unit of a townhouse and rowhouse usually covers the entire land area, and normally don't have or very minimal space for garden yards.