The cost, if any, should be estimated according to the local economic situation.
At the Eighth Green Building Conference, Chou Baoxing, Vice Minister of Housing and Urban-Rural Development, compiled the incremental cost data of green buildings according to the 2 13 project: the incremental cost of one-star residential buildings is 3 1 yuan /m2, and that of public buildings is 38 yuan/m2; The two stars are 88 yuan/m 2 and 268 yuan/m 2 respectively; The highest three-star 196 yuan/m2 and 494 yuan/m2, which means that our new cost can be recovered within two or six years at the longest. According to national regulations, the service life of residential buildings is generally 50 years, and that of public buildings is 100 years. According to this number of years, we can save a lot of energy.
You can consult a professional green building consulting company for details. Different consulting companies will have different incremental costs, so it is best to find someone with rich project experience.