Is it okay to own a house with 6 hours of sunshine in early winter and 2.5 hours of sunshine from winter to Sunday?

There may be some problems in lighting for houses with sunshine time of 6 hours in early winter and 2.5 hours in winter solstice.

According to the national standard "Code for Planning and Design of Urban Residential Areas", the lighting of residential buildings meets the following standards: not less than 2 hours in severe cold days, not less than 1 hour from winter to Sunday. Daylighting standard can reduce the residential buildings newly built in the renovation projects of old areas as appropriate, but it should not be lower than the standard of 1 in severe cold days. Therefore, if your house has less than 2.5 hours of sunshine during the winter solstice, it may not conform to daylighting standard.

However, whether the sunshine time reaches the standard depends on many factors, including but not limited to the location of the house, surrounding environment, storey height, local sunshine hours and so on. Therefore, in order to draw an accurate conclusion, you may need further professional evaluation, including a detailed understanding of the local climate and related laws and regulations.