This paper examines various applications of nanotechnology in the construction industry and the technical advantages they provide. The incorporation of nanoparticles into concrete, steel, and polymer-based materials has significantly enhanced structural durability, energy efficiency, and resistance to corrosion. Additionally, self-healing concrete systems and nano-enhanced fire-resistant coatings stand out as innovative approaches in this field. The aim of this paper is to analyze the current state of these technologies, highlight their practical applications, and shed light on their future prospects.