Your cart is currently empty!

Maybe that's necessary?A thorough explanation of the necessary DIY-related housing applications and notifications [Self-renovation]
Hello everyone, this is DIY Renova.
This time, we will answer the question, "What kind of documents, notifications, and applications are required when DIY renovations or self-renovating a home?"In particular, when you actually try to move your hands, you're often surprised and say, "What, are you applying for this too?"
In this article, we will introduce various documents and notifications that individuals will need to submit in some cases, even when performing DIY renovations or self-renovation, as "as comprehensive as possible," and also provide a detailed explanation of "where to submit" and "what content is required."By reading this, you will be able to understand what preparations you should prepare in advance, and you will be able to proceed with the renovation smoothly and with peace of mind.Please read to the end.
So, here you go.
1. Introduction
Self-renovation, which involves renovating or renovating your home yourself, has the fun of keeping costs down and allowing you to freely create your own design.However, since housing is subject to various regulations depending on laws and regulations, it is not possible to simply say, "Because it's your own home, you can renovate it as you please."
In particular, if major construction involves "destroying a wall," "significant changes to the floor plan," "providing earthquake-resistant reinforcements," or "renovating the shape of the exterior walls and roof," notification and approval may be required in advance to the government or related organizations.If you fail to submit a notification, you may be treated as an illegal building later, or, in the worst case, you may be ordered to redo the construction.
In addition, due to the demolition of homes or removal of building materials, if there is a suspicion that asbestos is contained, it may be necessary to conduct an asbestos survey by a specialized contractor or qualified person.If this is ignored, it could lead to health damage, trouble with surrounding residents, and even legal punishment.
In this article, we will organize the overall picture of these "surprisingly overlooked" procedures, explaining in an easy-to-understand manner which documents will be required for what kind of construction work, and where to submit them.
2. Documents and overviews that may require submission even for DIY renovations
To roughly categorize the following documents and reports:
- "Asbestos-related preliminary investigation and notification"
- "Notification based on the Construction Recycling Act"
- "Application for building approval based on the Building Standards Act" and "Complete inspection"
- "Fire Disaster Act and Fire Prevention Notification and Permission Application"
- "Road use permit" and "Noise and vibration notification"
- "Applications and changes procedures for infrastructure-related applications, such as water, gas, and electricity."
- "Registration of loss," "Related to Energy Saving Act," "Related to Subsidies," etc.
- In addition, notifications are made according to the ordinances of each local government
Looking at this alone, you may be surprised to see "Is that many?", but in reality, there are some that are "corresponding" and "not" depending on the construction content and scale.
Most of the items are unnecessary if you just need to replace the cloth or relay the flooring for DIY purposes, but this is a must-have for major renovations, such as "addling the structural parts that support the building," "removing the exterior walls and demolishing them significantly," "change the roof shape," or "turning a two-family home."
3. Applications and notifications related to dismantling
(1) Asbestos survey
As is associated with the word "demolition," if a whole wall or ceiling is removed, or if a work is to remove a part of a building, building materials containing asbestos may be touched.If inhaled, asbestos can cause serious damage to the lungs and can lead to serious diseases in the future.In Japan, the "Asbestos Disorder Prevention Regulations" and "Air Pollution Prevention Act" strictly stipulate asbestos removal and shatter prevention measures for construction work.
It is said that buildings built before 2006 are likely to use asbestos-containing building materials.Even if it is a DIY renovation, it is sometimes mandatory that a qualified person or specialist will investigate whether it contains asbestos before dismantling.
- "Who should I talk to?"
To conduct an asbestos survey, you must contact a specialized, qualified research company or contractor.If you consult with an administrative counter or an architect, you will often be able to provide information about the research company. - "Where are you reporting?"
If large-scale demolition work or building materials containing asbestos are found, the company will notify the prefectural governor or city or town (department under the Air Pollution Control Act).The formats and counters vary depending on the local government, so be sure to inquire in advance.
What is G-Biz ID?
"G-Biz ID" is an account authentication system that can be used commonly by companies, sole proprietors, etc. when applying electronic applications.By using this, you can complete some administrative procedures provided by the national government and local governments by "electronic application", and you don't have to go out of your way to bring paper documents to the counter.
However, not all procedures are G-biz-compliant.Some ministries and local governments use their "paper submission" or "unique electronic application systems" as before, so the current situation has not yet been "unitized."
Asbestos-related notifications and response status of G-Biz
Asbestos-related notifications (such as "reports of preliminary investigation results" or "notification of implementation of work for specific dust emissions") must be submitted to the respective local government's departments and labor standards inspection offices in accordance with the Air Pollution Prevention Act and the Asbestos Disorder Prevention Rules.The key is that there may be multiple submissions.
- Related to the Air Pollution Control Act:
It is under the jurisdiction of prefectures, cities, towns, and villages such as the Environmental Conservation Division and the Pollution Control Division.Depending on the scale and content of the demolition or renovation work, notifications may be required for a certain period of time (often 14 or 7 days before the construction). - Related to "Asbestos Disorder Prevention Rules":
The Labor Standards Inspection Office (Ministry of Health, Labor and Welfare), which is in charge of the Industrial Safety and Health Act, will be involved.Depending on the scale of the construction and the level of asbestos contained, you may need to submit a notification document here as well.
Some local governments and institutions accept online applications for "asbestos-related notifications" as mentioned above, but this is not necessarily the case nationwide.Some places allow you to apply electronically via G-Biz, while others use local government's own electronic application services (e.g. e-kanagawa electronic application, eOsaka, eWhat, What, etc.), so there are cases where even if you have a G-Biz ID, it cannot be used in that local government's system.
Why "G-biz alone is not enough"
- Local government's own electronic application system
Electronic application systems are divided across the country, and in one region it is linked to G-Biz IDs, but in another region it can only be used by the "XXXX Prefecture Electronic Application System." - There are still many local governments that require paper documents
Documents related to asbestos surveys have many checking items, and it is not uncommon for them to "have a large amount of attached documents (drawings, inspection results, etc.)."Therefore, some local governments recommend and require submissions on a paper basis, saying that "digital applications are likely to cause defects." - Some companies do not respond to the Labor Standards Inspection Office online notifications
The labor standards inspection office, which accepts notifications related to the Asbestos Disorder Prevention Regulations, has different situations in place for online applications.Some institutions may only accept mail or counters, and electronic applications via G-Biz are not possible.
Conclusion: G-biz alone is often not enough
To put it in a nutshell, there is no situation where "Using a G-Biz ID will complete all asbestos-related notifications" yet.We recommend following the steps below:
- First, check with the local government or supervisory office counter
Check "Which local government (prefecture or city) is under the jurisdiction of where you will be doing the construction work?" and "How is it correct to submit an asbestos-related report?"- Check the homepage of the department in charge and check whether electronic applications are possible or whether G-Biz ID is supported.
- If you don't know, please contact us directly by phone.
- If you have a G-Biz ID compatibility, you can actively use your electronic application.
There is no need to prepare or bring paper documents with you, so it reduces the hassle and the benefits of being able to manage them with data are great.However, be sure to check in advance whether you have any attachment upload restrictions or whether there are any system issues. - Some offices and local governments require paper documents to be submitted.
If you have a G-Biz ID, but the address you submit does not support an electronic application, there is a high possibility that it will be submitted in paper form or sent by mail.No matter how convenient the system is, please be aware that if you do not follow the actual operating rules, it may be a violation.
Summary
"Whether or not you can do it with just a G-Biz ID" depends on the response status of each local government and related organization that accepts asbestos-related notifications.There are very large regional differences, so you can just use G-biz anywhere in the country!That's not the case.
- First, check with the local government or labor standards inspection office where you live (or the construction site) or the counter of your labor standards inspection office (or the construction site).
- Check if it supports G-Biz ID
- If it is not supported, use paper documents or a proprietary online system.
In any case, the "asbestos survey" report should be completed at a time when there is time before construction begins (often 14 or 7 days before).Whether you use G-Biz or use paper, if you do not meet the deadline for submission, it could lead to violations of laws and delays in construction, so be sure to act early.
(2) Notification based on the Construction Recycling Act
The Construction Recycling Law is a law that aims to properly recycle waste generated by building construction.Specifically, when demolition of a total floor area of 80 m2 or more, or when performing an expansion or renovation work of the same scale, you must report it to the prefectural governor or city, town or village mayor at least 7 days (or 10 days) before the construction begins (please check if the submission deadline may vary depending on the local government).
- "Where are you going to submit it?"
Generally, the counters include the Construction Guidance Division and Civil Engineering Division of the City, Town and Village Office, which have jurisdiction over the location of the construction site.In reality, the names of the departments responsible for each local government often differ, so be sure to check the website or phone in advance. - "What is the name of the document?"
It is often called a "construction work notification form" or a "notification regarding plans for separate dismantling, etc."You may download it from the local government's website, but there are also local governments that require you to go and get the form.
(3) "Road use permit" and "Noise and vibration notification" that are often forgotten
During demolition work, if scaffolding is set up so that it protrudes onto public roads or if construction vehicles are frequently in and out, you will need to apply for a road use permit from the local police station.Be careful if you temporarily store waste materials on the road or if there is a possibility that large heavy machinery will hinder traffic.
In addition, if the noise or vibration caused by dismantling becomes large, a notification may be required based on the Noise Control Act or Vibration Control Act.This is generally the case where the "environmental department of a city or town" is the counter.
4. Building Standards Act related (building confirmation, etc.)

(1) Cases where building approval application is required
Under the Building Standards Act, if you are making a large-scale expansion or renovation or change the purpose, a "building confirmation application" may be required.For example, the following case:
- "The floor area of the extension exceeds 10 m2"
- "Repairs and redecorating in fire-resistant and semi-fire-resistant areas"
- "Changes of major parts in structural strength"
- "Changing the purpose of the building" (such as changing the home to a store)
Just because you're DIY renovation doesn't mean you're exempt.Before starting construction, you must apply to the "Building Director (Local Government Building Guidance Division)" or the "Designated Confirmation Inspection Agency" to receive a building confirmation.
- "Where shall I submit?"
The counter will be the local government's Building Guidance Division (or similar department) or a private inspection agency designated by the government. - "What documents do you need?"
Construction design drawings, layout drawings, elevation drawings, structural calculations (if necessary) etc. will be required.It is difficult for amateurs to create this, so it is common to seek cooperation from an expert such as an architect.
(2) Completion and inspection certificate
If construction requires construction confirmation, the usual procedure is to undergo a "complete inspection" when the construction is completed and have a "inspection certificate" issued.Without this, you could be at a disadvantage when selling or renovating in the future.Even if you are self-renovating, be sure to get a proper inspection.
5. Fire Prevention and Fire Prevention Act Related
(1) Rules for fire prevention and semi-fire prevention areas
Many urban areas are designated as "fire-resistant areas" and "semi-fire-resistant areas", and it is necessary to meet "fire-resistant structures" and "fire-resistant structures."The specifications of exterior walls and roofs are also strictly regulated, and if renovated without permission, there is a risk of violating the Building Standards Act.
(2) Notifications related to the Fire Service Act
- "New fireplaces and wood stoves will be installed" "Installing equipment that handles a large amount of gas and oil"
- "We will establish a space for an unspecified number of people, such as restaurants."
In such cases, a notification under the Fire Service Act or an inspection by the fire station may be required.Even in household areas, fire prevention measures are strictly required around the chimneys of wood stoves, so be sure to check with your local fire station or government office.
6. Notification of road use, noise vibration, etc.

(1) Road use permit (police station)
As mentioned earlier, if scaffolding, temporary enclosures, and heavy equipment used in construction protrudes onto public roads, a road use permit based on the Road Act or a road occupation permission will be required.In many cases, the submission destination is a "police station that has jurisdiction over construction sites" (depending on the type of road, it may be subject to the jurisdiction of the Ministry of Land, Infrastructure, Transport and Tourism, the prefecture, etc.).
(2) Notification of noise and vibration (city and town/village environmental department)
Demolition or extensive work can cause noise and vibrations to the neighborhood.Based on the Noise Regulation Act and Vibration Regulation Act, construction of a certain scale or larger may require a "Noise and Vibration Notification" to the city, town or village before the construction starts, so be sure to check.
7. Infrastructure systems (gas, electricity, water) and septic tanks
(1) Gas construction and notification
If you are using city gas or propane gas and are doing work that involves retrieving the gas pipes, you must contact the gas company or liquefied petroleum gas sales company to check safety and complete the necessary document procedures.If a gas pipe is not permitted by an unqualified person, it will violate the law, and there is a high risk of accidents.If you are looking for DIY, please check with your gas operator in advance to see how much DIY is possible.
(2) Electrical work
A "electrician" qualification is required for large-scale electrical work such as replacing a distribution board or changing a lead line.If you just mess with wiring with DIY, you should check in advance to make sure that it does not violate the Electrician Act.In the event of a major change, you will have to make adjustments with the power company, and documents may be submitted.
(3) Changes in water pipes and sewer pipes
If you are renovating a major change in the location of your kitchen, bathroom, or toilet, the outdoor plumbing route may also change.If the product is connected to a public sewer system, it is most likely that the construction will not be approved by the City, Town, or Village Water and Sewerage Division, and the construction will not be approved unless the designated contractor is assigned.
(4) Installation and modification of septic tanks
In areas with no sewerage systems in development or replacement of a new "mergered treatment septic tank," you will need to report it to the "public health center" or the "city and town environmental health department."Don't forget to undergo an inspection based on the "Septic Tank Method" after installation.
8. Other applications and notifications
(1) Registration of loss
If a building is demolished, you will need to "registrate the building" at the Legal Affairs Bureau (Registration Office).This is a legal procedure to show the state of the building being demolished and the building is gone, and strictly speaking, the principle is that it should be carried out "within one month of demolition."
- "Submitted to"
The Legal Affairs Bureau is in charge of the location where the building resides. - "Who will submit it?"
As a general rule, the real estate owner himself will carry out the procedures (you can also request a judicial scrivener).
(2) Energy Saving Law Related
For large-scale renovations, the total floor area exceeds 300 m2, or for renovations that are subject to the obligation to comply with energy saving standards, notifications may be required in accordance with the Act on Rationalizing Energy Use (Energy Saving Act).Although detached houses are a little larger in size, it is possible that the scope of application may be as a result of the multiple homes being converted to two households and expansions and renovations.
(3) Application for grants
The national government or local government may provide subsidies for earthquake-resistant renovations, barrier-free renovations, and energy-saving renovations.If you want to use these, you will need to submit an application that meets the issuance requirements.It is often necessary for subsidies to be applied "before construction begins", so if you are interested, please gather information early.
9. Summary and key points for risk aversion

- "First, consult with the local government."
Local governments have a variety of departments, including the Architectural Guidance Division, Civil Engineering Division, Environment Division, Water and Sewerage Division, and Fire Station.It is best to proceed while checking which construction work requires what kind of notifications.Surprisingly, there are many cases where the methods differ from local governments, so it is important to check. - "Check qualifications and laws to see if DIY is possible."
The law may prohibit construction of gas, electrical work, and plumbing work by anyone other than qualified personnel.Piping and wiring in your own way is extremely dangerous. - "If you need building inspections, we'll use the help of an expert."
It is safe and reliable to outsource some of the work to an architect or construction company to prepare and undergo examinations.In many cases, drawings and structural calculations are required, so get the help of a professional. - "Considering the risk of being pointed out later"
If construction is carried out without a notification, there is a possibility that in the event of an accident or a nearby problem, you may not be able to receive coverage or an order may be issued.Be especially careful about asbestos-related and demolition work. - "We will work backwards and schedule the construction schedule."
Many reports are stipulated that they must be submitted at least 0 days before construction begins.Consider the risk of re-publishing documents due to inadequate documents and make a timeline with ease.
Deadline for submitting various application forms, where and how to submit them
Application/Report name | By when? | Submitted to (jurisdiction) | How to submit |
Documents related to "Asbestos Survey" | Please allow yourself plenty of time before "construction begins" (after the survey is completed, and if necessary, 14 or 7 days before construction work) | ・Prefectural governors or cities and towns (departments in charge of the Air Pollution Prevention Act and asbestos related) ・Live Standards Inspection Office (depending on the case) | ・Submit the results of the survey prepared by a specialist company directly to the government office counter ・Some local governments may accept mail or online reception. |
Notifications (demolition, etc.) based on the Construction Recycling Act | Submit by 7 days before construction begins (or 10 days before) | ・City and towns and villages that have jurisdiction over the current location (many of the Architectural Guidance Division, Civil Engineering Division, etc.) | ・It is common to submit face-to-face at the counter. ・Some local governments can accept mail orders and apply electronically, so please check |
"Building confirmation application" | Always be sure to "before construction begins."Construction cannot be started unless you receive the confirmation certificate. | ・Local government building guidance section (architecture director) Or "Designated Confirmation Inspection Agency" | ・Face-to-face submission is basically (due to the large number of documents and drawings) ・Some local governments have had cases of implementing electronic application systems |
"Completion inspection application" | "Speedly after construction is completed."As a general rule, construction work that has undergone construction confirmation must undergo an inspection after completion | ・To where you applied for building confirmation (local government or designated confirmation inspection institute) | ・Many face-to-face submissions ・In some local governments, online support is also increasing |
"Road Use Permission" | Application before "beginning of construction (at least 7 to 10 days in advance)" | ・Traffic Regulation Section (Traffic Division) of the police station that has jurisdiction over construction sites, etc. | ・Many of them apply in person at the police station counter ・Electronic application support varies depending on the region |
"Noise and vibration notification" | Often submitted at least 7 days before construction starts (depending on local government) | ・City and town environmental conservation division, living environment division, pollution control division, etc. | ・Face-to-face submission is common ・Some local governments are available for mail or online |
"Notifications related to the Fire Service Act" (wood stoves, firearm equipment, etc.) | Consult with the fire station before installation and construction begins → Pre-notify if necessary | ・Jurisdictional fire stations (prevention department, fire prevention management, etc.) | ・Face-to-face submission is basically necessary (to check equipment drawings and documents) ・Many cases require prior consultation |
Applications and procedures related to gas (city gas/propane gas) | Before the start of plumbing, contact the gas operator and discuss the matter through designated construction companies, etc. | ・The gas companies used and LP gas sales companies ・In some cases, city, town, or village (additional procedures may be required if it is outside the gas supply area) | ・Direct meetings with gas companies (face-to-face or telephone) ・Submit documents to the gas company/local government counter (mail and other matters are up to the operator) |
Electrical wiring and distribution board changes, etc. (Related to the Electrician Act) | Consult with the power company before construction and confirm the necessary procedures and documents | ・Electrical power company ・Ministry of Economy, Trade and Industry and the Security Association (large-scale) if necessary | ・Contact with the power company via telephone, email, fax, etc. ・Mainly documents can be submitted by mail or in person |
Changes in water and sewer pipes | "Before construction begins," the construction application was made to the city, town, and village Water and Sewerage Division.Many local governments do not require construction work unless they are designated construction companies. | ・City and Town Water and Sewerage Division | ・Many face-to-face counters ・Some online available |
Septic tank related (installation/change) | Submit an installation notification to the health center or the Environmental Health Division before the construction begins. | ・The public health center or municipal environmental health department under its jurisdiction | ・Maintainly face to face or mail |
"Registration of Loss" (after demolition) | Application to the Legal Affairs Bureau within one month after the demolition is completed | ・Legal Affairs Bureau (Registration Office) that has jurisdiction over the location of the demolished building | ・Many registering documents are brought in face to face (even if mail is possible) ・Online registration is limited |
Related to the "Energy-Saving Act" (in the case of large-scale renovations) | Notification is required before construction begins (for large-scale expansion and renovations with a total floor area of over 300 m2) | ・Specified specific administrative agencies (many of the Architectural Guidance Division of prefectures or designated cities) | ・Basically submitting in person or by mail ・The number of local governments that are responding to electronic applications is increasing. |
Applications for grants and grants (earthquake resistance, energy saving, barrier-free) | The principle is "before construction begins."In many cases, applications are not accepted after construction begins | ・Ministry of Land, Infrastructure, Transport and Tourism, and departments in charge of local governments (city, town, village, prefecture) ・Independent administrative institutions (Japan Housing Finance Agency, etc.) | ・Many are face to face or by mail ・Online available (depending on the type of subsidy) |
10. Conclusion (References, videos, etc.)
This time, we have organized as much detail as possible about what kind of applications and notifications are required when performing DIY renovations or self-renovation.What did you think?Many people may be surprised, "Is there so many?!", but in reality, there are quite a wide range of housing laws and regulations.
"How much can I renovate or renovate my home in the first place? Where should I start?"Herefrom.If you would like to know more about the specific renovation process and construction,HerePlease also take a look at the page!
There are great fun and benefits unique to DIY, but safety and legal compliance are essential to protecting the precious property of a home.In particular, demolition work and construction work that involves messaging with the structure will greatly affect future problems depending on whether advance planning and reporting is appropriate.Submitting documents and procedures can be a bit tedious, but if you take all your effort, you will be able to get a home where you can live in peace once it is completed, and another major advantage is that you can avoid trouble with your neighbors and guidance from the government.
Finally, below are some useful references and videos.In particular, "official guidelines" and "local government websites" are easy to get the latest information, so be sure to check it out when planning your renovation.
- Ministry of Land, Infrastructure, Transport and Tourism "Information page on Construction Recycling Act"
- Ministry of Health, Labour and Welfare: "Regulations and Measures on Asbestos"
- Ministry of Internal Affairs and Communications Fire and Disaster Management Agency "Guides on Fire and Disaster Management Act"
- Websites of each local government (Building Guidance Division, Environment Division, Water and Sewerage Division, Fire Station, etc.)
- Regarding the Legal Affairs Bureau's "Registration Procedure (Loss Registration)"
- Guidelines for the Housing Renovation Promotion Council, a general incorporated association
- "Renovation Seminars" held by local architect associations and chambers of commerce and industry.
As mentioned above, if you gather information from various fields and incorporate expert support as necessary, the success rate of self-renovation should be significantly higher.With respect, I would like to express my gratitude to the government, organizations, and creators who disseminate this information.
So, thank you for reading this long sentence to the end.I hope that your DIY renovations and renovations will continue safely and comfortably.If you have any questions, please consult with local governments and architecture experts to realize the ideal home you envision.
"How much can I renovate or renovate my home in the first place? Where should I start?"Herefrom.If you would like to know more about the specific renovation process and construction,HerePlease also take a look at the page!
Leave a Reply
You must be logged in to post a comment.