Greening rate: the proportion of the green area within the planned construction land area to the planned construction land area. However, the greening rate is only a concept used by developers to publicize the greening of real estate, and there is no basis in laws and regulations. The national standard to measure the greening status of real estate is the green rate, which refers to the ratio of the sum of all kinds of green spaces within the scope of residential land to residential land, mainly including public green spaces, green spaces near houses, green spaces belonging to supporting public buildings and road green spaces. Its calculation is much stricter than the green rate.
Calculation formula: green rate = green area/land area. The green rate is usually controlled below the limit: the place where grass does not grow can be counted as the green rate, and the land within the building exterior wall 1.5m and the road sideline 1m and the land with a surface coverage depth of less than 3m, regardless of whether there is greening on it, are not counted as the green area. The green rate refers to "all kinds of green spaces within the residential land", mainly including public green spaces, green spaces beside houses, green spaces belonging to supporting public buildings and road green spaces. Green buildings such as sculptures, pools and pavilions with an area not exceeding 1% in public green space can be regarded as green spaces.
Greening rate is an inaccurate and nonstandard word, and the accurate formulation should be "greening coverage rate". Green coverage rate refers to the ratio of the sum of green vertical projection areas to residential land, which is relatively broad. Generally, places with grass can be counted as greening, so the green coverage rate is generally higher than that of green areas.
What is the appropriate greening rate?
"Green space rate" is used to describe the ratio of the sum of all kinds of green spaces in residential areas to the area of residential areas, including public green spaces and green spaces beside houses. The requirements for small public green space are not less than 8 meters in width and 400 square meters in area, and the green space within the land area is not less than 70% of the total area, and at least 1/3 of the green space area should be able to receive sunshine all the year round; When calculating the green space beside the house, the land within the outer wall of the building 1.5m and the roadside 1m is not included in the green space. In real estate development, the government has set the index of green space rate, which is generally not less than 30%. The "green coverage rate" is not so strict, as long as there is a piece of turf, so developers like to use the word "green rate".
When calculating the green rate, the requirements for green space are strict. The green rate refers to "all kinds of green spaces within the residential land", mainly including public green spaces and green spaces beside houses. Among them, public green space includes block and strip public green space such as residential park, small garden and group green space. The land area of courtyard greening, such as the green space beside the house, is also required to be within 1.5 meters from the external wall of the building and 1 meter from the roadside, which is not included in the green space.
In addition, there are several situations that cannot be included in the green area of the green rate, such as underground garages and septic tanks. The surface soil of these facilities is generally less than 3 meters deep, and the survival rate of planting trees on them is low, so the calculation of green space rate can not be included in "all kinds of greening within the scope of residential land"; Decorative green space such as roof greening, according to the current national technical specifications, is also considered as formal green space. In the process of real estate development, the green rate index is required by the relevant government departments in the initial planning of the project.
Therefore, in addition to the choice of local tax and apartment design, we should also pay attention to the "three rates", that is, greening rate, housing utilization rate and floor area ratio. For developers, the plot ratio determines the proportion of land price cost in housing; For residents, the floor area ratio is directly related to the comfort of living. So is the greening rate. The higher the greening rate and the lower the building density, the less area developers can use to recover funds, and the more comfortable residents will be. These two ratios determine whether the project is designed from the perspective of people's living needs or from the perspective of pure money making.