Provisions on lighting distance of residential buildings. There is also a departmental regulation on sunshine: China's Code for Planning and Design of Urban Residential Areas (GB50 180-93) (hereinafter referred to as the Code) stipulates: "The sunshine standard for residential buildings in big cities is ≥2 hours in severe cold days, ≥ 1 hour in winter solstice, and the residential buildings for the elderly should not be less than 2 hours in winter solstice. Adding any facilities outside the original design building shall not reduce the original sunshine standard of adjacent houses; The sunshine standard of new residential buildings in the old district reconstruction project can be reduced as appropriate, but it should not be lower than the standard of cold days 1 hour. " Therefore, if it is lower than the above standards, the right to light will undoubtedly be violated. Of course, it's best to find out if there are local regulations where you live. The sunshine standard of the house is not lower than the standard of cold weather 1 hour, and the renovation of the old house can be reduced as appropriate. When there are more than four living rooms in a house, two of them should get sunshine. The minimum daylighting coefficient of bedrooms and living rooms should not be less than 1%, and the area ratio of windows to the ground should be 1 ratio 7. The height of the upper edge of the window from the ground should not be less than 2m. If it really affects your lighting, you can consult with him and bring a lawsuit to the court if necessary.