We will explain specific examples of cases where a building confirmation application is required and cases where it is not, as well as key points to consider when proceeding with a renovation plan.
■ Cases Requiring a Building Confirmation Application ■
Examples of Renovations Requiring a Building Confirmation Application
In the case of aging non-rebuildable properties, reinforcement work is often required to ensure the safety of the building, which may eventually lead to large-scale renovations. It is important to consult with architects and professionals in advance to develop an appropriate renovation plan.
Regarding the necessity of building confirmation procedures for the renovation of wooden detached houses, the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has published a flowchart to determine whether a building confirmation application is required in such cases.
Source: Ministry of Land, Infrastructure, Transport and Tourism (MLIT), Regarding the Necessity of Building Confirmation Procedures for the Renovation of Wooden Detached Houses
■ Cases Where a Building Confirmation Application Is Not Required ■
If the renovation does not affect the main structural parts of the building, a building confirmation application is not required. Specifically, the following types of construction can be carried out relatively freely.
Examples of Renovations That Do Not Require a Building Confirmation Application
However, if the scope of the renovation is extensive, a building confirmation application may be required, so it is advisable to check in advance.
Examples of renovations on wooden detached houses that do not require a building confirmation application. It also summarizes other cases, such as the installation of handrails or ramps, which do not require confirmation, as well as cases that do require it. Taken from “Whether a Building Confirmation Application is Required for Renovations of Wooden Detached Houses.”
Properties where reconstruction is not allowed are subject to restrictions under the Building Standards Act, limiting new construction and major renovations, which makes real estate transactions more challenging. With the 2025 legal revision, the review process for renovations will become even stricter, requiring careful handling.
That said, it is still possible to maintain the property’s value by carrying out appropriate renovations within the scope that does not require a building confirmation application.
