The aim of the Bachelor’s thesis is to design a nearly zero-energy two-storey detached house with an attached garage. The first part of the thesis focuses on the architectural and structural design, building physics assessment, and fire safety design. The house is located in Moravany and has a rectangular shape. The external walls are made of aerated concrete blocks with expanded polystyrene insulation. All roofs are designed as flat. The ground floor includes an open-plan living area that combines a living room, a kitchen, and a dining area. The ground floor also contains a utility room and a master bedroom with direct access to a walk-in closet and a bathroom. The vertical connection between the ground floor and the first floor is provided by a centrally positioned staircase, which contributes to the overall spatial quality of the interior. The first floor contains two bedrooms, a bathroom, a laundry room, a closet, and a study. The study is currently designed as an open and flexible workspace; however, it can be easily converted into an additional bedroom in the future, increasing the adaptability of the house. The second part of the thesis focuses on the design of building services, with an emphasis on energy performance. The heating is provided by an air-to-water heat pump with an in-build electric boiler. The building is equipped with underfloor heating and mechanical ventilation with heat recovery, providing a healthy indoor environment. Stormwater is collected in an underground storage tank and used for garden irrigation, while wastewater is drained into the public sewer system. The building achieves the A-class in the Energy Performance Certificate, confirming its high energy efficiency.