The construction boom in Kochi continues unabated despite sharp increase in the price of materials and taxes because of growing demand for flats in the city and its suburbs. The increase in materials cost and the consequent rise in the price of flats do not seem to have deterred rich buyers because they feel it is still cheaper than that in other metros such as Bangalore, Mumbai and Chennai. The natural building materials available for construction in Kerala i.e. stones, timber, clay and palm leaves have anchored and guided the acceptance or rejection of outside influences. The availability of granite -a strong and durable building stone is restricted mainly to the highlands and marginally to some hilly zones. Accordingly, the skill in quarrying, dressing and sculpturing of stone is scarce in Kerala. Timber remains the prime structural material abundantly available in Kerala, in many varieties - from bamboo to teak and rosewood. The skilful choice of timber, artful assembly and delicate carving of wood work for columns, walls and roofs frames are the unique characteristics of Kerala architecture, using accurate fit of joints.