The charging standards for public housing are based on the square meters of the house. According to the original regulations, the rent for public non-residential buildings is 5.17 yuan/square meter for steel-concrete; first-class brick-concrete 5.66 yuan/square meter, second-class 4.60 yuan/square meter; first-class brick and wood 5.79 yuan/square meter, second-class 5.18 yuan /square meter, third grade 4.54 yuan/square meter; simple structure 4.04 yuan/square meter. There shouldn't be much change now. However, the late payment fee for nearly 20 years should be about 60% of the total price.