Independent houses are a great form of investment— the number is less, therefore the demand is greater. They offer more space, privacy, and scope to expand and modify. Furthermore, independent houses are detached and spacious, making them a great purchase for kids and senior citizens.  Flats on the other hand, have in-built security amenities. The options are varied and in great number, so you may be spoilt for choice and the demand is also higher. Renovation and expansion costs are less expensive than the regular maintenance costs of independent houses.