Today, scientific and technological developments directly affecting contemporary architecture. Nanotechnology, as one of the most riveting research areas, is the science designing and manipulating materials at atomic size. It has gradually established itself in the past two decades with novel and useful applications in all disciplines. This revolutionary technology has many potentials to change the way we design and produce. Recent researches indicate that nanomaterials used in built environments have many unique characteristics which can fix the current construction problems, and may change the requirement and organization of construction process as well. Conversely many researches urge that these technologies have demerits which may pose a risk to human health and the environment. In this context, this paper discusses and exemplifies pros and cons of nanomaterial usage in architecture.