nandanick Bangladesh Ltd. specialises in duplex residential and commercial building design – from semi‑detached houses to luxury dual‑living units. Our duplex design service includes space planning, vertical circulation (stairs/elevators), separate utility zones, privacy optimisation, and facade aesthetics. We produce detailed floor plans, elevations, cross‑sections, and 3D visualisations tailored to your plot size and budget. With 25 years of architectural experience, we ensure each duplex is functional, beautiful, and compliant with local building codes.