The building construction materials need not not be the same ageold. Nanotechnology has given a new dimension for each construction material with amazing properties. Few of them are: Corrosion inhibitor coatings for roofing, self cleaning coatings for glass, nanoporous aerogel materials as insulation materials, UV adsorbing nanoparticles, nanodyes, and nanoadditives for paints, silver nanoparticles or light activated nanoparticles as antibacterial household items, nanoparticles or nanoclays as fire retardant, surface nanostructures to give easy clean surfaces, nanofiltration and light activated nanoparticles as water treatment systems, nanopigments for giving UV stability of polymers.