This diploma thesis deals with architectural design of a family house, including its main constructions and assessment of selected details. Two main alternatives are presented: recommended value of a standard heat transfer coefficient and recommended value for passive houses. The work continues with determination of heat loss of the entire object, including calculation of thermal bridges effect. According to the calculated heat loss, there are several kinds of heating proposed. Namely: firewood, natural gas, brown coal, black coal, heat pump and electricity. The thesis also includes building envelope energy labels for both alternatives. The proposed family house is designed as a wooden structure with an emphasis on low heat loss.