[Tokyo, Toshima Ward] Renovation of Used Houses and Vacant Homes | Cost Estimates, Subsidies, and Case Studies
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For those considering renovations of used properties and vacant houses in Toshima-ku
I bought a used property, but I’m not sure if the renovation estimate I received is reasonable.
This is my first full renovation, and I’m worried about making mistakes.
I want to make the most of subsidies and grants.
For these concerns, Kakeru Koumuten Co., Ltd., which has numerous achievements in Toshima Ward, will clearly explain the key points for a successful renovation.
Get at least 3 estimates!
01Reasons for the Increase in Renovations of Used Properties and Vacant Houses in Toshima Ward
Toshima Ward, centered around Ikebukuro, is a city where residential areas such as Sugamo, Zoshigaya, and Nagasaki are spread out. Within the ward, there are areas where wooden houses are densely packed (wood density), and some areas have been designated as non-combustible special zones.
In the wood-dense areas, there are wooden houses that have aged and require confirmation of seismic, fire prevention, and insulation performance. Therefore, in Toshima Ward, there is also the option to “purchase a used wooden detached house and renovate (renovate) while confirming its seismic and fire prevention performance.”
Wood-Dense Residential Areas in the Ward
There are areas within the ward where wooden houses are densely packed. Renovating a used wooden detached house to continue living in it is one option.
Non-Combustible Special Zones and Wood Density Measures
If the requirements for the target area and buildings are met, there may be opportunities to utilize support for demolition and rebuilding in non-combustible special zones.
Considerations for Narrow Lots and Road Access
Due to the often narrow plots and close proximity to neighboring buildings, careful consideration for scaffold installation, fire prevention, and material delivery is required during construction.
Improving Comfort with Insulation and Energy Efficiency
The insulation of a home is influenced by the condition of windows, roofs, and exterior walls. If certain conditions are met, there may be opportunities to utilize energy-saving support programs from Toshima Ward and the national and Tokyo Metropolitan governments.
This article summarizes, from the perspective of Kakeru Koumuten Co., Ltd., the reasons, points to consider, cost averages, the latest subsidies for 2026, and how to choose contractors, to help those considering renovating used properties or vacant houses in Toshima Ward avoid “failures.”
The Most Important Thing is “Comparative Estimates”
The most crucial factor in avoiding failures in renovations is comparative estimates. First, obtain estimates from at least three companies that operate in Toshima Ward. Our company, Kakeru Koumuten Co., Ltd., also receives numerous consultations and requests for renovations of vacant houses and used properties.
02Reasons for Renovating Vacant Houses and Used Properties
In recent years, the Japanese housing market has expanded options not only for new constructions but also for renovating used properties. There is growing interest in living in renovated or refurbished used homes. Here, we explain the typical reasons for renovating vacant houses and used properties.
Reason 1 To Live Comfortably as Your Own Home
A common reason for purchasing and renovating a used property is “to live comfortably.” Older homes may have issues with roofs, exterior walls, or plumbing, making them difficult to live in as they are. By renovating and upgrading the facilities and interiors, a comfortable living environment can be created. Depending on the property price and scope of renovations, it is also possible to create a home that suits your family’s lifestyle while keeping overall costs lower than new construction.
Reason 2 To Increase Asset Value for Sale
More people are purchasing and renovating used properties with the intention of selling them. Used homes are often evaluated as having low asset value in their current state, but renovations can enhance their appearance and performance, thereby increasing their value as properties.
Reason 3 To Utilize as Investment or Business
When utilizing used properties for investment or business purposes, renovations tailored to the condition of the building and the expected tenants are considered. By transforming them into aesthetically appealing rentals or share houses, differentiation from other properties can be achieved, and depending on the location and business plan, profitability may also improve. Depending on the property price and scope of work, initial costs can be lower than new construction, and depending on the use and conditions, they may also qualify for subsidies or tax incentives.
03Points to Consider When Renovating Vacant Houses and Used Properties
Point 1 Choose a Reliable Construction Company
First and foremost, it is essential to select a contractor you can trust to handle the renovation. Since used properties have had previous occupants, the internal structure and condition are often not clear until you actually see them. Choose a contractor who can carry out the work thoroughly according to your wishes, the structure of the house, and the surrounding environment, and who also provides aftercare following the construction.
Point 2 Always Check the Deterioration of the Building
For used properties and vacant houses, it is crucial to check which parts have deteriorated and to what extent beforehand. Since the property has been occupied by someone else, internal damage is often not apparent without investigation. Conduct a current condition survey before starting construction to identify any hidden deterioration.
Point 3 Review Earthquake Resistance and Insulation Performance
Particularly important in the renovation of used and vacant houses is the review of earthquake resistance and insulation. The earthquake resistance standards were significantly revised in 1981, and houses built before that may not meet current standards. Additionally, in 2000, regulations regarding joints and foundations were strengthened, making older buildings more likely to lack earthquake resistance. Check the condition of the building before starting construction and be sure to check earthquake resistance and insulation.
Point 4 Check Subsidy Programs and Renovation Tax Deductions
To keep construction costs down, it is important to check for subsidies and renovation tax deductions. Subsidies are provided by the national and local governments, and part of the costs for earthquake retrofitting, energy-saving construction, and barrier-free renovations may be supported. There are tax deductions available for using housing loans, such as “housing loan tax deductions,” and systems that allow for deductions on certain construction costs even with personal funds. These can sometimes be used in combination, so it is crucial to check in advance and use them strategically to ensure a successful renovation (for the latest information, see this subsidy section).
04Cost Estimates for Renovating Vacant Houses and Used Properties
The renovation costs for used properties and vacant houses vary significantly depending on the extent of damage and the scope of work. First, please understand the approximate cost estimates by area to serve as a guideline for your financial planning (the table below provides general estimates for single-family homes. The interior is based on a single room of about 6 tatami mats, and the exterior is based on the indicated scope of work. Actual estimates will be provided after a site survey).
1. Roof and Exterior Walls
| Construction Content | Estimated Cost |
|---|---|
| Roof Repair & Painting | Approximately 200,000 – 800,000 yen |
| Roof Replacement & Overlay Method | Approximately 700,000 – 2,500,000 yen |
| Exterior Wall Painting | Approximately 600,000 – 1,500,000 yen |
| Exterior Wall Replacement & Overlay Method | Approximately 1,500,000 – 3,000,000 yen |
2. Interior (Interior Finishing)
| Construction Content | Estimated Cost |
|---|---|
| Floor Replacement (Approx. 6 tatami mats, Flooring, etc.) | Approximately 100,000 – 300,000 yen |
| Wallpaper Replacement (Approx. 6 tatami mats) | Approximately 50,000 – 150,000 yen |
| Ceiling Repair & Painting (Approx. 6 tatami mats) | Approximately 30,000 – 100,000 yen |
| Renovation from Japanese-style Room to Western-style Room (1 Room) | Approximately 200,000 – 600,000 yen |
3. Water-related Equipment
| Construction Content | Estimated Cost |
|---|---|
| Kitchen Replacement | Approximately 450,000 – 1,500,000 yen |
| Bathroom Renovation (Unit Bath) | Approximately 600,000 – 1,500,000 yen |
| Toilet Replacement | Approximately 120,000 – 500,000 yen |
| Vanity Replacement | Approximately 80,000 – 300,000 yen |
4. Equipment & Infrastructure
| Construction Content | Estimated Cost |
|---|---|
| Water Heater Replacement | Approximately 100,000 – 500,000 yen |
| Pipe Replacement (Aging Water Pipes, Partial Work) | Approximately 100,000 – 500,000 yen |
| Electrical Wiring Work (Partial Work) | Approximately 100,000 – 500,000 yen |
| Insulation Renovation (Replacing Multiple Windows, Installing Inner Windows, etc.) | Approximately 200,000 – 1,000,000 yen |
5. Waterproofing & Earthquake Resistance
| Construction Content | Estimated Cost |
|---|---|
| Balcony Waterproofing Work | Approximately 100,000 to 400,000 yen |
| Seismic Reinforcement Work | Approximately 500,000 to 2,000,000 yen |
6. Exterior Works
| Construction Content | Estimated Cost |
|---|---|
| Entrance Door Replacement | Approximately 200,000 to 500,000 yen |
| Gate and Fence Renovation | Approximately 200,000 to 800,000 yen |
| Parking Lot Development (for 1 car, including concrete pouring, etc.) | Approximately 200,000 to 600,000 yen |
* The above are general estimates. Costs may vary depending on the presence of scaffolding, the condition, grade, and area of the building. Waterproofing for rooftops and updates to plumbing and wiring for the entire house may exceed the above estimates depending on area and method. Please confirm the exact costs through a free on-site survey and estimate.
Please check the construction menu and price list for more details!
05[Latest 2026] Subsidies and Grants Available in Toshima Ward
One way to renovate used properties and vacant houses cost-effectively is to utilize the subsidy and grant system. As of 2026, we have summarized the main systems that residents of Toshima Ward may be able to use.
* The following information is as of August 31, 2026. The content, duration, and budget of the systems change annually, and many will end once the budget limit is reached. Please check for the latest information with our company or the respective offices before applying. Kakeru Koumuten can assist with confirming the systems and necessary documents, but the applicants and application methods vary by system.
National Program: Housing Energy Saving 2026 Campaign
The government is implementing multiple subsidy projects targeting energy-saving renovations under the “Housing Energy Saving 2026 Campaign.” Construction for insulation, windows, and water heaters may be eligible for these subsidies when used in combination.
This program is a successor to the “Child-Rearing Green Housing Support Project.” It requires the implementation of specified “requirement construction” combinations based on the timing of the house’s construction and the standards aimed for, in one room with openings facing the exterior. Additionally, eco-friendly housing equipment, child-rearing compatible renovations, disaster prevention improvements, and barrier-free renovations may also be eligible for subsidies.
Subsidy limits: For houses built before 1991, up to 1 million yen per unit (50,000 yen depending on construction content); for houses built between 1992 and 2016, up to 800,000 yen per unit (400,000 yen for the same). Eligible construction must start on or after November 28, 2025, and applications will be accepted starting June 30, 2026. Reservations must be made by November 16 at the latest, and grant applications must be submitted by December 31 at the latest (early termination may occur if the budget limit is reached). Applications must be made by registered contractors.
This program covers insulation renovations for windows, including the installation of interior windows, replacement of exterior windows, and glass replacement. It offers substantial subsidies and is effective for addressing cold, heat, and condensation issues. It can easily enhance the insulation performance of existing homes.
Subsidy amounts vary based on the window construction method, performance, size, and the way the house is built. If the total subsidy amount for one application is less than 50,000 yen, it is not eligible. Applications have been accepted since March 31, 2026, and grant applications must be submitted by December 31 at the latest (early termination may occur if the budget limit is reached). Applications must be made by registered contractors.
This program targets the replacement of high-efficiency water heaters such as eco-cute, hybrid water heaters, and EneFarm. It is a suitable program for older properties planning to replace their water heaters.
Estimated subsidy amounts: Eco-cute 70,000 to 100,000 yen per unit, hybrid water heaters 100,000 to 120,000 yen per unit, EneFarm 170,000 yen per unit. Eligible construction must start on or after November 28, 2025, and applications will be accepted starting March 31, 2026 (early termination may occur if the budget limit is reached).
Tokyo Metropolitan Government Program
This program covers high-insulation windows (installation of interior windows, replacement of exterior windows, glass replacement), high-insulation doors, insulation materials, and high-insulation bathtubs. It is a program with substantial subsidies that can significantly enhance the insulation performance of existing homes.
High thermal insulation windows and doors have a maximum subsidy of 2 million yen per unit (3 million yen per unit for security windows), insulation materials are covered at one-third of eligible expenses with a cap of 1 million yen, and high thermal insulation bathtubs are 95,000 yen per unit. Pre-application starts on May 29, 2026, and application submissions are accepted from June 30, 2026. Individuals and corporations owning residences in Tokyo are eligible. The program is managed by Cool Net Tokyo. For more details, visit the official page.
This system provides discounts on eligible amounts when purchasing energy-efficient air conditioners, refrigerators, water heaters, and LED lighting from registered retailers. It can also be utilized for updating equipment when moving into a used property.
Typical replacement amounts: Air conditioners 9,000 to 23,000 yen, refrigerators 14,000 to 26,000 yen, water heaters (EcoCute, etc.) 12,000 yen, LED lighting fixtures 4,000 yen (if replacement work costs are incurred, 6,000 yen). The eligible period lasts until March 31, 2027, but may end earlier depending on budget conditions. For more details, visit the official page.
This program supports the installation of solar power generation equipment and storage batteries in existing homes. If you are considering installing energy-saving equipment in a used home, please check the eligibility requirements.
Storage batteries are subsidized at 100,000 yen per kWh, with a maximum of 1.2 million yen per unit. There are also subsidies for solar power generation equipment based on the type of equipment. Please confirm the eligible devices, application periods, and combined conditions before starting construction by checking the official information. For more details, visit the official page.
Toshima Ward Programs
This program supports the costs of earthquake resistance renovations for eligible wooden houses. If you are purchasing an older wooden detached house and planning to retrofit it for earthquake resistance, please check the requirements such as construction period and earthquake diagnosis results.
Seismic retrofitting work is eligible for 2/3 of the subsidized expenses, with a maximum of 1,000,000 yen. If the work is carried out by a contractor within Toshima Ward, an additional 1/6 and a maximum of 500,000 yen applies, and if there are residents requiring assistance during disasters, the total maximum may reach 2,500,000 yen. Our company’s work is not eligible for the additional amount for contractors within the ward, so please confirm with the ward before signing a contract, including the basic subsidy. For details, visit the official Toshima Ward page.
In the non-combustible special zone within Toshima Ward, if the requirements for the target area and buildings are met, support is provided for the demolition of aging buildings and reconstruction into fire-resistant buildings.
There are subsidies for demolition and promotion of single-family home reconstruction, reductions in property taxes, free dispatch of experts, and more. Since there are requirements regarding the target area and construction period, consultation and application before contracting and starting work are necessary. The contact point is the Regional Community Development Division. For details, visit the official Toshima Ward page.
This is a unique system of the ward that allows applications after the completion of construction and payment for the eligible equipment. If the national and Tokyo metropolitan government systems do not prohibit simultaneous use, there may be a possibility of combining them.
Subsidies for insulated renovation windows are 1/4 of the eligible expenses, with a maximum of 100,000 yen; solar power generation is 20,000 yen/kW, with a maximum of 80,000 yen; storage batteries are 10,000 yen/kWh, with a maximum of 50,000 yen; EneFarm is 80,000 yen; and HEMS is 1/3 of the eligible expenses, with a maximum of 20,000 yen. The completion period for eligible work is from February 1, 2026, to January 31, 2027, and applications will be accepted from May 25, 2026, to March 1, 2027 (must arrive by this date), and will end early when the budget is reached. As of August 27, 2026, the planned grant amount is 38% of the budget. For details, visit the official Toshima Ward page.
There is a system to support housing renovations for individuals aged 65 and older, as well as improvements to dangerous block walls facing roads and other areas. The requirements for eligible individuals, roads, and construction content vary by system.
The maximum preventive grant for elderly independent living housing renovations is 200,000 yen, with limits for equipment renovations set at 379,000 yen for bathtubs, 156,000 yen for sinks, and 106,000 yen for toilets, along with a user burden of 10% to 30% depending on income. Large-scale renovations, new constructions, and extensions are not eligible, and applications must be submitted before renovations. For more details, visit the official page for elderly independent living housing renovations. For improvements to block walls, the cost for removal is 2,500 yen/m, and for new installations, it is half of the eligible expenses with a maximum of 300,000 yen, requiring an application before contract and construction. For more details, visit the official page for block wall improvements.
* Support for seismic resistance and fireproofing has requirements based on the area, buildings, and construction contractors. The additional costs for seismic renovations must be carried out by contractors within Toshima Ward. Additionally, the ward’s eco-housing subsidies require applications after construction and payment are completed, but there are systems that require procedures before starting work, including seismic resistance and fireproofing. Please be sure to check the application timing for each system.
See also about renovation tax reductions and other systems
- Housing loan tax reduction: If you use a housing loan for renovations that meet certain requirements, income tax and other deductions will be based on the year-end balance.
- Renovation promotion tax system (investment-type tax reduction): For construction related to seismic resistance, energy conservation, barrier-free design, and long-term excellent housing, there may be cases where income tax deductions can be received even with personal funds.
- Reduction of fixed asset tax: There is a system that reduces fixed asset tax for a certain period for seismic renovations, energy-saving renovations, and barrier-free renovations.
- Tokyo’s insulation and energy-saving subsidies: The above “Tokyo’s system” (energy-saving renovation promotion projects for existing homes, Tokyo Zero Emission Points, etc.) may be combined with the national “Housing Energy Saving 2026 Campaign.” If you are considering construction for windows, insulation, or high-efficiency equipment, please check the application timing for each system.
While subsidies and tax reductions can sometimes be combined, there are restrictions on duplication for the same work. Kakeru Koumuten Co., Ltd. will organize and propose which systems can be used for your work after conducting an on-site survey.
06Customer Voices
カテゴリ ‘voice’ は見つかりません
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customer reviews
Asao-ku, Kawasaki City | We received reviews about the ridge cap and rain gutter replacement work!
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customer reviews
Kohoku-ku, Yokohama | We received reviews about the roof overlay (cover method)!
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customer reviews
Kohoku-ku, Yokohama | We Received Reviews About Exterior Painting!
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customer reviews
Aoba-ku, Yokohama | We received reviews about our exterior fence construction!
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customer reviews
Tsurumi-ku, Yokohama | We received reviews about roof and exterior wall painting, as well as metalwork and rain gutter replacement work!
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customer reviews
Higashiyamato City, Tokyo | We received reviews about exterior painting and roof overlay (cover method)!
Kakeru Koumuten Co., Ltd. Roof Renovation Case Studies
| Work Details | Roof Replacement Work |
|---|---|
| Existing Roofing Material | 瓦U (asbestos-containing) |
| New Roofing Material | 立平ロック32型 |
| Price | 700,000 – 800,000 yen |
Our Proposal
We removed the existing 瓦U (asbestos-containing) and performed a roof replacement work to 立平ロック32型. During the roof replacement work, we can install new roofing materials after checking the condition of the roof substrate.
07How to Choose a Renovation Contractor for Used Properties and Vacant Houses in Toshima-ku
There are many renovation companies that serve Toshima-ku, and many may be unsure of which one to choose. When requesting a renovation, be sure to check the following five points.
- Experience in renovation work
- Check for warranties and after-sales maintenance
- Obtain estimates from multiple contractors (at least three)
- Confirm whether the exterior work is done in-house
- Check if they offer color simulations and perspective drawings
1. Experience in Renovation Work
Many renovation contractors publish their work results on their websites. If a contractor provides detailed explanations of the process with photos, it makes it easier to visualize the project after hiring them, providing peace of mind. If you have concerns, choose a contractor with rich experience.
Google and review sites can also be helpful. It is important to check the content of low ratings, the company’s responses, and the timing of the posts. In particular, Google reviews are useful, but do not make your decision based solely on reviews; consider the work results, estimates, and warranty details for a comprehensive assessment.
2. Confirm the presence of warranties and aftercare services
When selecting a contractor, be sure to check for warranties. If repairs are needed within the warranty period, they may be done for free. The duration varies by contractor and paint type, but typically ranges from 1 to 10 years (emergency repairs and partial repairs are often not covered). Some contractors also offer aftercare services separately, so be sure to check that as well.
Kakeru Koumuten Co., Ltd. provides warranties for eligible exterior renovations and sealing work. We also conduct aftercare services and send out annual notification DM, making annual inspections possible.
Click here for more details on Kakeru Koumuten’s warranties and aftercare services
3. Obtain estimates from multiple contractors (at least 3 companies)
When requesting renovations, be sure to obtain estimates from multiple contractors. Even for the same work, warranties, aftercare services, and prices can vary significantly. Having multiple estimates makes price negotiations easier.
When comparing estimates, look at not just the costs but also the “items in the estimate,” “check the undercoating materials, sealing materials, and paint for auxiliary parts,” and “confirm the process” in detail. Lowering the rank of auxiliary parts or skipping processes can reduce costs, so it is important to not judge solely by price.
Click here to see detailed points for comparing estimates
4. Confirm whether the exterior work is done in-house
At Kakeru Koumuten Co., Ltd., we conduct detailed hearings and investigations regarding the existing “condition,” “location,” “materials,” “desired durability,” and “design,” and propose suitable plans. While there is nothing inherently wrong with a system where a partner company performs the construction, it is important to confirm whether the contracted company understands the construction details and clearly defines the responsibilities for quality control and guarantees. If the company performs exterior work in-house, it becomes easier to coordinate with the site, allowing for quick responses in case of any troubles.
5. Do they offer color simulations and perspective drawings?
Choosing colors and envisioning the outcome after construction can be challenging for both exterior and interior work. With simulations, you can reduce the risk of mistakes like “it turned out differently than I imagined.” Since it is difficult to redo once the work is done, it is advisable to choose a company that can provide flexible simulations.
08Reasons Why Kakeru Koumuten is Chosen for Renovations of Used Houses in Toshima-ku
One reason is that “Kakeru Koumuten also serves Toshima-ku,” but
we have initiatives in “vacant house and used property renovations” that cannot be imitated by other companies,
which have received high praise from many customers.
We are confident in our “cost,” “quality,” and “plans” for renovations in Toshima-ku. Please compare our estimates with those of other companies.
The most important aspect of renovations is getting multiple estimates. Request estimates from at least three companies that serve the Toshima-ku area!
1. Specialized Equipment for Exterior Renovations
At Kakeru Koumuten Co., Ltd., we have organized warehouses and material storage to provide high-quality exterior renovation work at low cost. We have five bases located in Aoba-ku and Asahi-ku in Yokohama, as well as in Machida City, Tokyo, including our headquarters and material storage.
In-House Scaffold Material Ownership
We can construct temporary scaffolding, which is essential for exterior renovations, using our own scaffold materials and in-house scaffold team. By not outsourcing, this leads to cost reduction in scaffold construction. We own scaffold materials for approximately 50 detached houses.
Material Storage in Our Large Warehouse
We store roofing materials and paints. By ordering and storing materials in bulk, we enhance the efficiency of procurement and site response. We also have various tools ready for exterior construction, such as compressors and cleaning machines.
In-House Waste Sorting
In exterior renovations, various waste materials such as paint, wood, and metal are generated. Our company sorts waste materials and ensures proper disposal and recycling.
Dedicated Showroom for Exterior Renovations
In our showroom, you can not only have meetings but also check the actual paint colors and a wide variety of catalogs. You can also confirm heat resistance using a heat-resistant paint testing machine and color simulation. The showroom is a 3-minute walk from Eda Station in Aoba-ku, Yokohama. It is also accessible from within Tokyo.
2. In-house Exterior Construction
A major strength of Kakeru Koumuten Co., Ltd. is our in-house exterior construction. We handle everything from inquiries to project completion in a consistent manner, with one representative managing everything from the estimate to the completion of the work, ensuring smooth communication without changes in the sales or construction management teams. Our skilled craftsmen perform everything from temporary scaffolding setup to exterior wall painting and roof renovations. For interior renovations, we respond with a system tailored to the specific work involved. We are confident in our plans and costs, so we welcome competitive estimates.
3. Various Permits and Skilled Workers
We have obtained permits for the construction industry and for the collection and transportation of industrial waste. We also have nationally certified sheet metal workers and painting specialists on staff, ensuring confidence in our construction techniques. We are capable of handling large-scale painting projects for factories and apartment complexes as well.
4. Warranty and Aftercare
Exterior painting and joint sealing work come with a warranty. Aftercare is available every year, and we send out notification DM annually. If you are concerned about the warranty, please click on the image above to check.
5. Flexible and Prompt Response
We are equipped to handle various exterior troubles and situations. Even if you cannot access the roof at high places, we can respond using a drone. For leak investigations, we also use a thermal imaging camera. We respond according to our customers’ wishes and also accept emergency measures for sudden leaks from the exterior walls only.
6. Human Resource Development
To improve skills, we create various models and conduct practical training. Since exterior renovations differ in construction methods and materials based on existing materials and shapes, we regularly conduct skill enhancement training to ensure that each staff member can respond to various sites.
Click here for company information
7. Flexible Simulations for Both Exterior and Interior!
Kakeru Koumuten Co., Ltd. is dedicated to helping you choose colors and designs for your important building renovations, both exterior and interior, to ensure your satisfaction.
7-1. Exterior Renovation Simulation
We can provide color simulations for exterior wall painting, as well as simulations for metal siding and roof overlays. We can create simulations from actual photos of your building and suggest several color patterns based on our recommendations. We also accommodate “test painting” and “arranging paint boards” to confirm the actual color tones.
7-2. Interior Renovation Simulation
We also support simulations and perspective drawings for interior renovations. Based on your preferred style, such as modern, we will propose recommended simulations. We create realistic perspectives from actual floor plans.
8. We also handle solar panel and storage battery installation work!
More customers are introducing solar equipment, which has generous subsidies, in line with renovations of used properties. Kakeru Koumuten Co., Ltd. also handles solar equipment installation and will propose solar panels tailored to the shape of your roof. We can also accept requests for estimates and power generation simulations only.
09Renovation of Used Properties and Vacant Houses in Toshima Ward | Frequently Asked Questions
We will answer the most frequently asked questions from those considering renovations of used properties and vacant houses in Toshima Ward.
Is it better to renovate after buying a used property or consult before purchasing?
If possible, please consult us before making a purchase decision. Used properties often have deterioration that is not visible, and it is not uncommon to encounter cases where “unexpected construction costs arose” after purchase. By having Kakeru Koumuten Co., Ltd. check the condition of the property you are considering in advance and provide an estimate of necessary renovations, you can establish a feasible financial plan.
For a used detached house in Toshima Ward, what renovations should be prioritized first?
It depends on the condition of the building, but we prioritize areas that, if neglected, could lead to further damage, such as leaks, termites, and structural or seismic issues. After that, we decide the order of renovations for exteriors such as roofs and walls, water areas (kitchen, bathroom, toilet), and insulation based on your budget and impact on daily life. For used detached houses in areas with dense wooden structures, we recommend checking the deterioration of the roof and exterior walls and determining priorities based on the overall inspection results of the building.
Toshima Ward has many densely built wooden areas; what should be noted about used detached houses?
In areas with dense wooden houses, it is important to check for earthquake resistance and fire resistance. The subsidy for earthquake retrofitting of wooden houses in Toshima-ku covers 2/3 of eligible expenses, with a maximum limit of 1,000,000 yen. If the work is done by a contractor within Toshima-ku, there is an additional 1/6 and a maximum of 500,000 yen. If there are individuals requiring assistance during disasters residing in the house, the total maximum may reach 2,500,000 yen. Support for non-combustible special zones is limited to specific areas and buildings, so please consult with the ward before signing any contracts. Our company’s work does not qualify for the additional subsidy for contractors within the ward.
How much does a full renovation (full remodel) cost?
The cost of a full renovation for a detached house varies significantly depending on the scope and grade. If focusing on partial renovations, it typically starts from around 8,000,000 yen, while large-scale renovations that include interior and exterior work, plumbing, insulation, and earthquake resistance may exceed 15,000,000 to 30,000,000 yen. Depending on the building’s size and condition, costs may fall below or exceed this range. We will first conduct an on-site inspection to assess the condition and propose a prioritized plan that fits your budget.
Do I need to apply for subsidies myself? Is the process difficult?
The applicant varies depending on the program. For example, the national “Mirai Eco Housing 2026 Project” requires registered contractors (construction companies) to apply. For earthquake retrofitting or housing modifications under long-term care insurance in your city or ward, the application is generally made by the individual, but we will guide you through the necessary documents and process. We will organize and inform you about “which programs are available,” so please feel free to consult with us first.
What risks are there if I leave a vacant house unattended?
Risks include the progression of leaks and termite damage, depreciation of asset value due to deterioration of exterior walls and roofs, and neglect of garden trees and equipment. Additionally, if you receive a recommendation from the municipality as a “poorly managed vacant house” or “designated vacant house,” there is a possibility that the special property tax exemption for residential land will be revoked. Early inspections and necessary repairs based on your plans to live in, rent, sell, or utilize the property can ultimately help reduce costs.
I am concerned about earthquake resistance. How can I assess the earthquake resistance of a used detached house?
The construction date is a significant indicator. Check if it was built after June 1981 (new earthquake resistance standards), and further if it was built after June 2000 (strengthening of joint and foundation regulations). For wooden houses built before this, we recommend an earthquake assessment. Your city or ward also offers subsidies for earthquake retrofitting of wooden houses, which can significantly reduce costs if eligible (for details, see the subsidy section above). Kakeru Koumuten Co., Ltd. can assist you from assessment to renovation.
Will I need temporary housing during construction? How long will it take?
This depends on the scope of the work. Exterior renovations and partial interior work can often be done while you remain in your home, but for large-scale full renovations that include plumbing, we may recommend temporary housing. The estimated duration is about 2 to 4 weeks for exterior work and approximately 1 to 3 months or more for full renovations. We will provide you with a schedule in advance and propose a plan that minimizes the impact on your daily life.
Is Toshima-ku within your service area? Will there be travel costs?
Yes, Toshima-ku is within the service area of Kakeru Koumuten Co., Ltd. We have five bases, including our headquarters, material storage, and Machida store, located in Aoba-ku, Yokohama, Asahi-ku, and Machida City in Tokyo, allowing us to serve a wide area in Kanagawa and Tokyo. Estimates are free in Toshima-ku. Please feel free to consult with us first.
Leave your renovations in Toshima-ku to Kakeru Koumuten!
“I want a renovation that lasts a long time with just one project,” “I want to keep costs as low as possible,” “I want to improve insulation because the indoors are hot”—we will propose solutions tailored to your specific requests, the condition of your building, and your budget. Based on our on-site survey, we will clearly explain the necessity and priorities.
We are confident in our costs, quality, and organization, so we welcome competitive estimates. Our estimates are completely free.
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If you find our company to be inferior to others, you are free to decline.
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10Features of Toshima-ku
Toshima-ku, Tokyo, is a town centered around Ikebukuro, with residential areas spreading in Sugamo, Zoshigaya, and Nagasaki. Within the ward, there are regions densely populated with wooden houses, and some areas are designated as fireproof special zones.
For older wooden houses, it is important to check seismic, fire prevention, and insulation performance. Kakeru Koumuten is headquartered in Aoba-ku, Yokohama, and provides exterior and interior renovations across a wide area in Kanagawa and Tokyo. We handle exterior work such as roofs and walls with our own staff, while interior renovations are managed according to the specifics of the project.
Areas Available for Renovation
Kakeru Koumuten accepts requests across a wide area in Kanagawa and Tokyo. Please note that the availability may vary depending on the location of the building and the nature of the work, so please contact us for details.
Areas Served in Toshima-ku, Tokyo (Main Areas)
Ikebukuro / Ikebukuro Honcho / Kanamecho / Kamikebukuro / Kita-Otsuka / Komagome / Sugamo / Senkawa / Zoshigaya / Takada / Takamatsu / Chihaya / Nagasaki / Nishi-Ikebukuro / Nishi-Sugamo / Higashi-Ikebukuro / Minami-Ikebukuro / Minami-Otsuka / Minami-Nagasaki / Mejiro and other wide areas within Toshima-ku
・Exterior Renovation in Toshima-ku
・Exterior Wall Painting in Toshima-ku
・Waterproofing Work in Toshima-ku
・Skylight Repair and Replacement in Toshima-ku
・Exterior Wall Overlay (Cover Method) in Toshima-ku
・Large-Scale Repairs in Toshima-ku
・Leak Repair in Toshima-ku
・Exterior Wall Cleaning in Toshima-ku
・Solar Panel Installation in Toshima-ku
・Check out Kakeru Koumuten’s Renovation Case Studies!
・Kakeru Koumuten Co., Ltd. Construction Menu and Price List
・Reasons to Choose Kakeru Koumuten!
・Kakeru Koumuten’s Warranty and Aftercare Services
・Company Overview of Kakeru Koumuten Co., Ltd.
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