What does a building line mean, and what is the difference between a building line and a site line?

The building red line, also known as the building control line, is the boundary line that controls the street surface of buildings or structures (such as exterior walls, steps, etc.) on both sides of the urban road in urban planning and management.

The property line generally consists of a road line and a building control line. The red line of the road is the planning control line of the land used for urban roads (including residential roads), and the building control line is the control line of the base position of the building. The base is adjacent to the road, and the red line of the road is generally used as the building control line.

If due to the needs of urban planning, the competent authority may set a building control line in addition to the road line, which is generally called the setback road red line. The building line can coincide with the road line, and generally in new cities, the building line is often retreated behind the road line, so as to free up land, improve or beautify the environment, and achieve good results.

The red line of land use is a line that connects some coordinate points around a certain plot, and the land area within the red line is the scope of land used to obtain the right to use. When developing and constructing the building community of this plot, it is also necessary to set back the red line by about 2 meters, which varies from place to place, depending on the regulations of the local planning bureau. The buildings of the community must be within the red line, and the land that has been withdrawn is not allowed to be occupied.

The red line of the site is only marked on the red line map, and it cannot be seen on the site. However, the setback line is clear at a glance, and the wall of the community is the setback line.

Legal basis

Construction Law of the People's Republic of China

Article 41 Construction enterprises shall abide by the provisions of laws and regulations on environmental protection and production safety, and take measures to control and deal with the pollution and harm to the environment caused by all kinds of dust, waste gas, waste water, solid waste, noise and vibration on the construction site. Article 42 In any of the following circumstances, the construction unit shall go through the application and approval procedures in accordance with the relevant provisions of the State:

1) It is necessary to temporarily occupy a site outside the scope of planning approval;

2) It may damage public facilities such as roads, pipelines, electricity, posts and telecommunications;

3) It is necessary to temporarily cut off water, electricity, or road traffic;

4) It is necessary to carry out blasting operations;

5) Other circumstances where laws and regulations provide that it is necessary to go through approval formalities.

Also known as the "building control line", it refers to the boundary line that controls the street surface of buildings or structures (such as exterior walls and steps) on both sides of the urban road in urban planning and management. No building or structure facing the street shall exceed the building line.

The property line is the maximum building area.

When the investor obtains the development right of a certain piece of land, the relevant leading department will give a red line for the construction, which means that the building built by the investor shall not exceed this range. Some civil buildings, such as residential areas, will build fences along the red line of the building, and the walls can be planned according to the designer's design, such as the construction of a square, then set up steps or greening along the red line of the building.

However, if a free-standing building is constructed, it is generally not built against the building line. This is to ensure that there is sufficient spacing between the buildings to allow for basic facilities such as walking, lighting, safe passage, etc.

As follows:

1. The red line of land use.

It is a dotted line, and the building line should be a solid line.

2. Building red line.

Refers to the boundary line of the building land. It is also subdivided into red lines.

and land use red lines.

The building line, generally known as the building control line, is the control line at the location of the building's base. To put it bluntly, it is the line of the area where the building is in contact with the ground. Some buildings can be set beyond the red line of the building when they are off the ground, which is set according to the requirements of each place.

The land use red line refers to the boundary line of the land use ownership scope of various construction projects (some also refer to the land use red line directly as the building red line). For example, the red line of land in a residential area is the outermost boundary line of the residential area, and the buildings and greenery in the residential area and roads can only be designed within the red line of the residential area.

Building red line, black line, blue line, purple line.

The red line refers to the planning and construction unit.

Approved construction land lines, planned road lines, and building lines.

The blue line, also known as the water system planning control line, refers to the management of the urban water surface, and the water surface shall not be arbitrarily encroached upon in urban construction, including filling lakes and occupying rivers.

The purple line refers to a national historical and cultural city.

The boundaries of the protection scope of historical and cultural blocks announced by the people of provinces, autonomous regions and municipalities directly under the Central Government, as well as the boundaries of the protection scope of historical buildings outside the historical and cultural blocks that have been announced and protected by the people at or above the county level.

The urban black line refers to the municipal pipe network for water supply and drainage, electricity, telecommunications, and gas construction, and the black line management is the management of the above-mentioned municipal pipe network, so as to achieve orderly planning.

1. Definitions:

Building red line: The building red line is the degree to which the building should be set back from the red line of urban roads or land, generally at least 5m for multi-storey and at least 10m for high-rise buildings.

Road red line: refers to the boundary line of the planned urban road (including residential road).

2. Differences: 1. The objects of the boundary are different

The right-of-way is for the boundary of the road, while the building is for the boundary of the building. The building line can coincide with or retreat behind the right of way, but it must never be exceeded, and no permanent buildings are allowed to be built within the red line.

The building line is the relative position relationship formed by the building line and the building control line, reflecting the building setback. The red line of the road is the planning control line of the land used for urban roads (including residential roads); The building control line is the control line at the base of the building.

2. The strictness of the boundary is different

Local urban planning administrative departments often delineate the building red line (building control line) within the red line of the land use, so as to control the base of the building not to exceed the building control line. The land construction unit between the two lines can be used for ground parking, greening and other functions. Underground buildings can cross the building line, but not the land use line.