FAQs

On April 3, 2009, residential restricted areas were designated as greening areas, and the greening area system was started. . On May 24, 2024, it was expanded to commercial restricted areas due to changes in urban planning related to greening areas.

There is no obligation to greening for buildings that have existed before the regulations on greening areas were enforced. However, when expanding or rebuilding, it may be subject to the regulation of the greening rate.

When building a building with a site area of 500 square meters or more in a greening area, even if it is a house, it is subject to the regulation of the greening rate.

Even if it is designated as a greening area, buildings that apply next are not subject to greening rate regulations.
Buildings that had already begun construction at the time of the city planning for the greening area was announced, and in the case of extension, the total floor area after the extension was 1.2 times the floor area on the day when the city planning for the greening area was announced What does not exceed. In addition, about building which meets standard Article 35 Clause 2 about limit of greening rate of building in city green tract of land law including station building or dangerous goods warehouse and Article 6 about limit of tree planting rate of building in Yokohama-shi greening area, it becomes application exemption of tree planting rate May be. Please confirm the details at the counter.

For greening facilities, it is mandatory to maintain and maintain a well above the minimum greening rate even after construction. Please note that removing greening facilities or installing structures and structures in greening facilities may not be able to meet the minimum greening rate.
If it is found that it violates laws and regulations, such as not meeting the minimum greening rate, on-site inspections and corrective orders may be issued.

The applicant is the mayor (Green Environment Bureau) before applying for a building confirmation. The same applies below. We submit "greening rate conformity proof (change) application" to. After that, the issued “Greening Facility Conformity Certificate Notice” and the “Greening Rate Conformity Certificate (Change) Application” (including greening facility quadrature maps, etc.) stamped with the collation seal of the Green Environment Bureau A copy of the copy is attached to the building confirmation application.

Applicant submits "greening rate conformity proof (change) application" to the mayor again with contents reflecting change before building completion inspection. After that, a copy of the newly issued “Greening Facility Conformity Certificate Notice” and the “Greening Facility Conformity Certificate Notice” before the change (excluding the attached documents) "Attach and perform a minor change procedure for building confirmation application.

A simple change procedure can be performed in the following cases: a change in a greening facility that does not affect the contents of the "Greening Facility Conformity Certificate Notice".
・Change of tree species
Change such as planting tree species within range that satisfies standard of area calculation without change of classification of tree planting facility (if area calculation table changes, please submit changed area calculation table)
・Change of position of trees, etc.
Change of planting position in the tree planting area, change of the position of the canopy where the area does not change
・Change of construction methods for rooftop greening and wall greening
If the area does not change and the greening method changes (Please submit a detailed structural drawing)

At the time of completion inspection of building, building manager or designated confirmation inspection organization confirms greening facility.
At the time of completion inspection, please note that if the greening facility is not completed according to the application for which the "Greening Facility Conformity Certificate Notice" was issued, an inspection certificate will not be issued. If there is a change in the greening facility, please re-apply for the greening rate conformity certificate before applying for a completion inspection.

When area except tree planting area is included in part of site of building, tree planting based on "the regulations to make and bring up green environment" or "the regulations about adjustment of Yokohama-shi development business" other than tree planting area system Is required. Please confirm the details at the counter.

If the building site area exceeds 500 square meters, a procedure for the greening area system is required. Please confirm the details at the counter.

Wall greening, trees, turf, flower beds, etc., water flow, etc. can be calculated as the greening rate. In addition, facilities such as garden roads attached to these are also subject to calculation.

Rooftop greening is a target that can be calculated based on the greening rate. Calculated in the same way as greening facilities on the ground. However, for the management of greening facilities, it is necessary to have facilities such as handrail fences and irrigation facilities that can be easily entered and exited, and to install facilities such as handrail fences and irrigation facilities.

Structures that are not covered with soil or other materials, such as basins, curbs, and exposed concrete foundations in greening facilities, cannot be included in the area of greening facilities. Please deduct the horizontal projected area of those structures from the greening area. The same applies to telephone poles and signboards.

In the case of "trees planting areas", those with a height of less than 0.4m cannot be regarded as trees, even shrubs such as azaleas. In addition, bamboos cannot be seen as trees.
However, the area of bamboo can be calculated by the "canopy".

Parking lots and passages are not included in greening facilities because it is difficult to maintain turf.
In addition, please do not include parts where the car body is applied, such as behind the car stop in the parking lot, in greening facilities.

In the following cases, the area of "deemed canopy" cannot be calculated.
・When the horizontal projection of the deemed canopy overlaps with the horizontal projection of a structure such as a building installed at a higher position than the upper end of the root pot (however, if there is a work at a position lower than the upper end of the root pot like rooftop greening The area can be calculated as a deemed can be calculated).
・When part or all of the horizontal projection of the deemed crown is outside the premises
・Trees with a height of less than 1m
・Bamboo
Please note that all of the areas corresponding to these cannot be calculated as the area of the "deemed crown" as the area of the greening facility. When describing the deemed canopy in the greening plan, enter the position of the canopy and trunk at the same position as the actual planting position, and enter the dimensions that serve as a guide.
Also, when applying with a "canopy", be careful not to make the area smaller than the area applied for at the time of inspection due to pruning etc. "Capples" are suitable when existing forests are used as greening facilities.