[KAT0] Renovation of Vacant Houses and Used Properties in Katsushika-ku, Tokyo | Costs, Subsidies, and Case Studies
For those considering renovation of used properties and vacant houses in Katsushika Ward
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.
Kakeru Koumuten Co., Ltd., which serves the Katsushika Ward area, will clearly explain the points to consider when planning a renovation for such concerns.
Let’s compare estimates from multiple companies
01Reasons for the Increase in Renovations of Used Properties and Vacant Houses in Katsushika Ward
Katsushika Ward in Tokyo is known for areas such as Shibamata, Kameari, and Kanamachi, featuring residential areas with rivers and water facilities, as well as wooden detached houses and apartment buildings.
For older homes, it may be necessary to review earthquake resistance, flood prevention measures, and insulation. Therefore, purchasing a used detached house or apartment and renovating it according to the building’s condition and lifestyle is an option.
Shibamata and Kameari: Downtown Residential Areas
There are wooden detached houses and apartment buildings, providing options to renovate and continue living in accordance with the building’s condition.
Flood Awareness in the Eastern Lowlands
In areas close to rivers, it is important to check hazard maps and consider the layout of facilities and flood prevention measures.
Dense Wooden Structures and Non-Combustible Special Zones
There are areas with dense wooden structures, making it important to review earthquake resistance and fire prevention. There are also areas like Nishi-Shinkoiwa 5-chome where grants for non-combustible measures are generous.
Be Aware of the “Boundary” of New Earthquake Resistance Standards
The earthquake resistance of used houses varies significantly depending on the construction period. It is important to determine whether the property was built before the standard revisions in 1981 and 2000.
In this article, we summarize the reasons, points of caution, cost averages, the latest subsidies for 2026, and tips for choosing contractors from the perspective of Kakeru Koumuten, which serves the Aoto-ku, Katsushika area, to help those considering renovating used properties and vacant houses “avoid mistakes.”
Compare Estimates with Consistent Conditions
When renovating, it is important to compare estimates from multiple companies. Make sure to align the scope of work, materials used, processes, and warranty conditions, and check not only the prices but also the clarity of the proposals and explanations. Kakeru Koumuten is also available for consultations regarding renovations of vacant houses and used properties in Katsushika.
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 a growing interest in living in renovated or refurbished used houses. Here, we explain the typical reasons for renovating vacant houses and used properties.
Reason 1 To Live Comfortably as Your Own Home
A typical reason for purchasing and renovating a used property is “to live comfortably.” Older homes often have issues with the roof, exterior walls, and plumbing, making them difficult to live in as they are. By renovating and updating the facilities and interiors, you can create a comfortable living environment. Furthermore, depending on the condition of the building and the scope of work, it is possible to finish a home that suits your family’s lifestyle while keeping costs lower than new construction.
Reason 2 To Increase Asset Value for Sale
There are cases where a used property is purchased and renovated for the purpose of resale. The condition of deterioration and the age of the facilities can affect the evaluation of used houses, but by renovating to improve both appearance and performance, there is a possibility of enhancing the property’s value.
Reason 3 To Utilize as an Investment or Business
For investment or business purposes, renovations may be carried out according to the condition of the building and the expected tenants. Renovations for rental housing or share houses can lead to differentiation from other properties, but profitability varies based on location, acquisition costs, construction costs, rent, and vacancy rates. Depending on the use and conditions, there may also be subsidies or tax incentives available, so it is advisable to consider this alongside your business plan.
03Points to Note 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 your renovation with peace of mind. For second-hand properties, since there were 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 your home, and the surrounding environment, and who also provides aftercare following the construction.
Point 2 Always Check the Deterioration of the Building
For second-hand properties and vacant houses, it is crucial to check which parts have deteriorated and to what extent in advance. Since there have been other occupants, the internal damage is often not apparent without investigation. Conduct a current condition survey before starting work to understand any hidden deterioration.
Point 3 Review Earthquake Resistance and Insulation Performance
Particularly important in the renovation of second-hand 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. Furthermore, 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 work and be sure to check the earthquake resistance and insulation.
Point 4 Check Subsidy Programs and Renovation Tax Reductions
To keep construction costs down, it is important to check for subsidies and renovation tax reductions. Subsidies are provided by the national and local governments, supporting part of the costs for earthquake retrofitting, energy-saving construction, and barrier-free renovations. Tax reductions include “housing loan tax reductions” when using a housing loan, and there are systems where part of the costs can be deducted for certain works even with personal funds. These can sometimes be used in combination, so it is key to check in advance and use them strategically for a successful renovation (for the latest information, see this subsidy section).
04 Cost Estimates for Renovating Vacant Houses and Second-Hand Properties
The renovation costs for second-hand properties and vacant houses vary significantly depending on the extent of damage and the scope of work. First, please understand the approximate costs 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 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 and Painting | Approximately 200,000 to 800,000 yen |
| Roof Replacement / Roof Overlay (Cover Method) | Approximately 700,000 to 2,500,000 yen |
| Exterior Wall Painting | Approximately 600,000 to 1,500,000 yen |
| Exterior Wall Replacement / Overlay (Cover Method) | Approximately 1,500,000 to 3,000,000 yen |
2. Interior (Interior Finishing)
| Construction Content | Estimated Cost |
|---|---|
| Floor Replacement (Approximately 6 tatami mats, flooring, etc.) | Approximately 100,000 to 300,000 yen |
| Wallpaper Replacement (Approximately 6 tatami mats) | Approximately 50,000 to 150,000 yen |
| Ceiling Repair and Painting (Approximately 6 tatami mats) | Approximately 30,000 to 100,000 yen |
| Renovation from Japanese-style Room to Western-style Room (1 room) | Approximately 200,000 to 600,000 yen |
3. Water-related Equipment
| Construction Content | Estimated Cost |
|---|---|
| Kitchen Replacement | Approximately 450,000 to 1,500,000 yen |
| Bathroom Renovation (Unit Bath) | Approximately 600,000 to 1,500,000 yen |
| Toilet Replacement | Approximately 120,000 to 500,000 yen |
| Vanity Replacement | Approximately 80,000 to 300,000 yen |
4. Equipment and Infrastructure
| Construction Content | Estimated Cost |
|---|---|
| Water Heater Replacement | Approximately 100,000 to 500,000 yen |
| Pipe Replacement (Aging Water Pipes, etc. – Partial Work) | Approximately 100,000 to 500,000 yen |
| Electrical Wiring Work (Partial Work) | Approximately 100,000 to 500,000 yen |
| Insulation Renovation (Replacing Multiple Windows, Installing Inner Windows, etc.) | Approximately 200,000 to 1,000,000 yen |
5. Waterproofing and 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 only. Costs may vary depending on the presence of scaffolding, the condition, grade, and area of the building. Waterproofing of rooftops and updates to plumbing and wiring for the entire house may exceed the above estimates depending on the area and method. Please confirm the exact costs through a free on-site survey and estimate.
For more details, please see our construction menu and price list!
05[Latest 2026] Subsidies and Grants Available in Katsushika Ward
One way to renovate used properties and vacant houses cost-effectively is by utilizing the subsidy and grant system. As of 2026, we have summarized the main systems that residents of Katsushika Ward may be able to use.
*The following information is as of September 1, 2026. The content, duration, and budget of the systems change annually, and some may end once the budget limit is reached. Please check the official pages and contact points for the latest information before applying. The application methods, applicants, and timing for contracts and construction 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.
This program is a successor to the “Child-Rearing Green Housing Support Project.” As a general rule, it requires renovation work that includes insulation improvements for openings (windows) and structural components, targeting eco-friendly housing equipment, child-rearing compatible renovations, disaster prevention enhancements, and barrier-free renovations.
Subsidy upper limit guidelines: For houses built before 1991, up to 1 million yen per unit (50,000 yen depending on the construction details); 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 are accepted starting June 30, 2026. Reservations must be made by November 16 at the latest, and subsidy applications must be submitted by December 31 at the latest (early termination if budget limits are reached). Applications must be made through registered contractors.
This program targets insulation renovations for windows, including the installation of interior windows, replacement of exterior windows, and glass replacement. The subsidy amount is significant and effective for addressing cold, heat, and condensation issues. It can easily enhance the insulation performance of existing homes.
The subsidy amount varies based on the window construction method, performance, size, and the type of house. 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 subsidy applications must be submitted by December 31 at the latest (early termination if budget limits are reached). Applications must be made through registered contractors.
This program targets the replacement of water heaters with high-efficiency models such as eco-cute, hybrid water heaters, and EneFarm. It is a suitable program for existing properties planning to replace their water heaters.
Subsidy amount guidelines: 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 are accepted starting March 31, 2026 (early termination if budget limits are reached).
Tokyo Metropolitan Program
This program targets 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 significant subsidies that can greatly 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 the eligible expenses with a cap of 1 million yen, and high thermal insulation bathtubs are 95,000 yen per unit. Pre-registration starts on May 29, 2026, and application for grants is 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.
A system that provides points for replacing with energy-efficient air conditioners, refrigerators, water heaters, and LED lighting. It pairs well with equipment updates when moving into used properties.
Estimated points: Air conditioners 9,000 to 23,000 yen, refrigerators 14,000 to 26,000 yen, water heaters (eco-cute, etc.) 12,000 points, LEDs 4,000 yen, etc. Replacements are valid until March 31, 2027. Individuals residing in Tokyo are eligible. For more details, visit the official page.
Broad support for the introduction of solar power generation, storage batteries, high thermal insulation windows, insulation materials, eco-cute, etc., into existing homes. This is aimed at those considering used properties with energy-saving equipment.
Storage batteries are subsidized at 100,000 yen per kWh, with a maximum of 1.2 million yen per unit. Solar power, insulation, and high-efficiency water heating are also subsidized by type of work (unit prices need to be confirmed). All are applicable to existing homes. Applications for the 2026 fiscal year are also being accepted. For more details, visit the official page.
Katsushika Ward Programs
This is the main program for Katsushika Ward, which has a downtown and wooden density area. Dispatch of earthquake diagnosis specialists is also available, making it effective for earthquake resistance in conjunction with the purchase of used wooden houses.
Seismic reinforcement design and seismic retrofitting for old seismic standards (construction started before May 31, 1981) 2/3, upper limit of 2.2 million yen; additional for disabled persons, 10/10, upper limit of 2.812 million yen. Upper limit for rebuilding is 2.2 million yen, and for demolition 4/5, upper limit of 1.8 million yen. There are separate subsidies for non-combustible special zones and non-combustible concentration promotion areas. The application deadline for approval in fiscal year 2028 is December 11, 2028. For details, please visit the official page of Katsushika Ward.
This is a unique system of the ward that can be used for insulation renovations, solar power, storage batteries, high insulation houses, etc.
Insulation renovations (walls, roofs, ceilings, floors, windows) are eligible for 1/4 of the eligible expenses, with an upper limit of 200,000 yen; storage batteries are 1/4, upper limit of 200,000 yen; solar power is 60,000 yen/kW, upper limit of 300,000 yen; EneFarm is 50,000 yen; high reflectivity coating is 50,000 yen for roofs or walls, and 100,000 yen for both. The application period is from April 1, 2028, to March 31, 2029, but many of the eligible facilities require prior consultation at least four weeks before construction. For details, please visit the official page of Katsushika Ward.
We support renovations of housing equipment for the elderly (separate from long-term care insurance) and the removal of dangerous block walls.
The housing equipment renovation subsidy has a limit of 379,000 yen for bathtub replacement, 156,000 yen for sinks and washbasins, and there are requirements based on age, physical condition, and income. Long-term care insurance housing renovations provide 70-90% of the cost up to a limit of 200,000 yen, and prior application is required before construction. The removal of dangerous block walls is up to 400,000 yen, and the deadline for prior consultation for fiscal year 2026 is December 11. For more information, please check housing renovations under long-term care insurance and subsidies for block wall removal and related construction.
* The subsidies in Katsushika Ward do not uniformly subsidize all renovations. The target construction and application conditions are specified for each system, including seismic, energy-saving, elderly housing renovations, and dangerous block walls. Insulation renovations include windows, but please check the national and Tokyo metropolitan systems for high-efficiency water heaters. There are separate subsidies in non-combustible special zones and non-combustible concentration promotion areas (Nishi-Shinkoiwa 5-chome), so please confirm with the ward office before contracting or starting construction.
View information on 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 applied based on the year-end balance.
- Renovation Promotion Tax System (Investment-type Tax Reduction): For construction related to earthquake 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 Property Tax: There is a system that reduces property tax for a certain period for earthquake-resistant renovations, energy-saving renovations, and barrier-free renovations.
- Tokyo’s Insulation and Energy Conservation Subsidy: The above “Tokyo’s System” (energy-saving renovation promotion project for existing homes, Tokyo Zero Emission Points, etc.) can sometimes be combined with the national “Housing Energy Conservation 2026 Campaign.” If you are considering window, insulation, or high-efficiency equipment construction, please consult us before starting work.
Subsidies and tax reductions can sometimes be combined, but there are restrictions on duplication for the same construction. Kakeru Koumuten will organize and propose “which system can be used for your construction” after conducting a 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)!
Roof Overlay Construction Case in Katsushika Ward
| Construction Location | Katsushika Ward, Tokyo |
|---|---|
| Construction Details | Temporary scaffolding installation / Roof overlay construction |
| Existing Roofing Material | Colonial NEO |
| New Materials Used | Asahi Fiberglass Ridgeway (Harvard Slate) |
| Price Range | 700,000 – 800,000 yen |
| Completion Month | September 2022 |
Our Proposal
The existing roofing material was Colonial NEO, which is not suitable for maintenance through painting. We proposed the roof overlay (cover method) that does not require the removal of the existing roof, using a waterproof sheet and new roofing material, with Ridgeway lightweight asphalt shingles as the finishing material. If the underlying structure is significantly damaged, the overlay method may not be applicable, so we will determine the appropriate method after an on-site inspection.
07How to Choose a Renovation Contractor for Used Properties and Vacant Houses in Katsushika Ward
There are many renovation companies that serve Katsushika Ward, and it can be confusing to decide which one to choose. When requesting renovations, be sure to check the following five points.
- Experience in renovation work
- Check for warranties and aftercare services
- Obtain estimates from multiple contractors
- Confirm whether they perform renovations in-house
- Check if they offer color simulations and perspective drawings
1. Experience in renovation work
Many renovation contractors publish their work achievements on their websites. If a contractor provides detailed explanations of the process with photos, it can help you visualize the outcome after the request, giving you peace of mind. If you are uncertain, choose a contractor with ample 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 a decision based solely on reviews; consider the work achievements, estimates, and warranty details comprehensively.
2. Check for warranties and aftercare services
When choosing a contractor, be sure to check for the presence or absence of a warranty. If repairs are needed within the warranty period, they may be done for free. The duration varies depending on the contractor and the paint used, but it typically ranges from 1 to 10 years (emergency repairs and partial repairs are often not covered by the warranty). Some contractors also offer after-sales service in addition to the warranty, so be sure to check that as well.
Kakeru Koumuten Co., Ltd. provides warranties for eligible exterior renovations and sealing work. The coverage, duration, and after-maintenance details vary by project, so please check the warranty conditions before signing the contract.
For more details on Kakeru Koumuten’s warranty and after-maintenance, click here
3. Obtain estimates from multiple contractors
When requesting renovations, be sure to obtain estimates from multiple contractors. Even for the same work, warranties, after-sales services, and prices can vary significantly. Having multiple estimates makes price negotiations easier.
When comparing estimates, it is important to look at not just the cost but also the “items in the estimate,” “check the primer, sealing materials, and additional paint,” and “confirm the process” in detail. Lowering the rank of additional parts or skipping steps can reduce costs, so it is essential to not judge solely by price.
For detailed points on comparing estimates, click here
4. Confirm whether they perform renovations in-house
Kakeru Koumuten Co., Ltd. conducts thorough hearings and investigations regarding the existing “condition,” “location,” “base materials,” “desired durability,” and “design,” and proposes the most suitable plan. While there is nothing inherently wrong with a system where partner companies perform the work, it is important to confirm whether the contracting company understands the work details and clearly defines the responsibilities for quality control and warranty. If they perform the work in-house, it is easier to coordinate with the site and respond quickly in case of any issues.
5. Check if they offer color simulations and perspective drawings
Both exterior and interior projects can often lead to concerns about the final image and color choices after construction. With simulations, you can reduce the risk of disappointment from “it looks different than I imagined.” Since it is difficult to redo once the work is done, it is recommended to choose a company that can provide flexible simulations.
08Reasons why Kakeru Koumuten is chosen for remodeling used houses in Katsushika-ku
One reason is that “Kakeru Koumuten also serves Katsushika-ku,” but
we have unique initiatives in “vacant house and used property remodeling” that cannot be imitated by other companies,
which have received high praise from many customers.
For remodeling in Katsushika-ku, we clearly present “cost,” “quality,” and “plans.” Please compare with estimates from other companies.
In remodeling, it is important to obtain multiple estimates and compare the scope of work, materials used, and warranty conditions.
1. Equipment specialized for in-house remodeling
Kakeru Koumuten has established warehouses and material storage areas to provide remodeling work at appropriate prices and quality. In addition to our headquarters and showroom in Aoba-ku, Yokohama, we have three material storage locations in Aoba-ku and Asahi-ku.
In-house scaffolding materials
We can construct the temporary scaffolding required for exterior remodeling using our own scaffolding materials and in-house scaffolding team. By not outsourcing, this leads to cost reductions in scaffolding work. We own scaffolding materials for approximately 50 houses.
Storage of materials in our large in-house warehouse
We store roofing materials and paints, arranging supplies according to the construction details and timing. By utilizing our own warehouse, we have established a system that facilitates the supply of materials to the site and smooth initial responses in emergencies. We are also equipped with various tools that can handle different types of construction, such as compressors and cleaning machines.
In-house waste separation
In exterior renovations, various types of waste such as paint, wood, and metal are generated. Our company is committed to separating waste and recycling what is possible, striving for proper disposal and cost reduction.
Exterior renovation dedicated showroom
In the showroom, you can not only have meetings but also check the actual paint colors and a wide range of catalogs. Color simulations and heat insulation tests using heat-resistant paint testing machines are also available. The showroom is a 3-minute walk from Eda Station in Aoba-ku, Yokohama, and is accessible from Tokyo as well.
2. In-house construction system focused on exterior work
Kakeru Koumuten Co., Ltd. has established its own construction system focused on exterior work such as temporary scaffolding, exterior wall painting, and roof renovations. From the estimate to the completion of the work, a dedicated representative will be your point of contact, ensuring coordination with the site and quality control. For interior and equipment work, we collaborate with specialized partner companies depending on the nature of the project. You can confirm the scope of work and construction system at the time of the estimate.
3. Acquisition of 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.
4. Warranty and Aftercare Maintenance
We provide warranties for eligible exterior wall painting and joint sealing work. The warranty period, coverage, and inspection conditions vary depending on the nature of the work. If you have concerns about the warranty, please click on the image above for more information.
5. Flexible and Prompt Response
We are equipped to respond to various exterior troubles and situations. Even if you cannot access the roof at high places, we can use a drone to assist. For leak investigations, we also utilize a thermal imaging camera. We respond according to our customers’ wishes and also accept emergency repairs for sudden leaks from exterior walls.
6. Human Resource Development
We create various models to enhance our skills and conduct practical training. Since the construction methods and materials used for exterior renovations differ based on the existing materials and shapes, we conduct regular technical 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 renovations!
Kakeru Koumuten Co., Ltd. is dedicated to helping our customers choose colors and designs for their important building renovations, ensuring their satisfaction with both exterior and interior work.
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 propose several color patterns based on our recommendations. We also accommodate requests for “test painting” and “sample board arrangements” to confirm 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 designs, we can suggest recommended simulations. We create realistic perspectives based on actual floor plans.
8. We also handle solar panel and storage battery installation!
As more customers are introducing solar equipment with substantial subsidies for renovations of used properties, Kakeru Koumuten Co., Ltd. also handles solar equipment installation, proposing 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 Katsushika Ward | Frequently Asked Questions
We answer the most frequently asked questions from those considering renovations of used properties and vacant houses in Katsushika Ward.
Is it better to renovate after buying a used property or to consult before purchasing?
If possible, please consult with us before making a purchase decision. Used properties often have deterioration that is not visible at first glance, and it is not uncommon to encounter cases where “unexpected construction costs arose” after the purchase. By having Kakeru Koumuten check the condition of the property you are considering and provide an estimate for necessary renovations in advance, you can create a feasible financial plan.
What renovations should be prioritized for a used house in Katsushika-ku?
It depends on the condition of the building, but we prioritize areas that, if left unattended, could lead to further damage, such as leaks, termites, structural issues, and seismic resistance. After that, we determine the order of renovations for the roof and exterior walls, water areas (kitchen, bathroom, toilet), and insulation according to your budget and its impact on your daily life. Rather than deciding the priority solely based on the age of the building, let’s plan based on the inspection results of the entire property, including the exterior.
Katsushika-ku has many wooden houses in the downtown area. What should I be careful about when buying a used house?
In Katsushika-ku, it is important to consider seismic resistance, fire prevention, and flood control based on the location of the property. In areas where wooden houses are concentrated, we also check the road width and the delivery of scaffolding and materials. The seismic retrofitting promotion project in Katsushika-ku covers 2/3 of the costs for reinforcement design and seismic renovation for eligible wooden houses, with a maximum limit of 2.2 million yen. There are separate systems for non-combustible special zones, and it is necessary to confirm the combined conditions for insulation renovations under the various systems of the ward, national government, and Tokyo Metropolitan Government.
How much does a full renovation (full remodel) cost?
The cost of a full renovation for a detached house varies significantly depending on the total floor area, condition of deterioration, and the grade of equipment. Even for interior and exterior updates that do not significantly change the layout, a rough estimate starts at around 8 million yen, while large-scale renovations that review insulation, seismic resistance, plumbing, and layout can exceed 15 million to 30 million yen. First, we will check the condition through a site survey and propose a plan with prioritized items according to your budget.
Do I need to apply for subsidies myself? Is the process difficult?
The applicant varies depending on the system. For example, the national “Mirai Eco Housing 2026 Project” is a system where registered contractors (construction companies) apply. For seismic renovations or home modifications under nursing 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 systems can be used,” so please feel free to consult with us first.
What risks are there if I leave a vacant house unattended?
Leaving a vacant house can lead to the progression of leaks and termite damage, a decrease in asset value due to deterioration of the exterior walls and roof, 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 tax exemption for residential land will be revoked. Conducting an inspection early and carrying out necessary renovations according to your plans to live in, rent, sell, or utilize the property will ultimately help reduce costs.
I am concerned about seismic resistance. How can I assess the seismic resistance of a used house?
The construction period is a significant guideline. Let’s check if it was built after June 1981 (new earthquake resistance standards) and further after June 2000 (strengthening of joint and foundation regulations). For wooden houses built before these dates, we recommend an earthquake resistance diagnosis. Your local city may also offer subsidies for seismic retrofitting of wooden houses, which can significantly reduce costs if you qualify (for details, see the above subsidy section). Kakeru Koumuten Co., Ltd. will assist you from diagnosis to renovation.
Will I need temporary housing during construction? How long will it take?
It depends on the scope of the work. For exterior renovations or partial interior work, it is often possible to carry out the work while staying in your home. However, for large-scale full renovations, we may recommend temporary housing. The estimated duration is about 2 to 4 weeks for exterior work and about 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 Katsushika Ward within your service area? Will there be a travel fee?
Yes, Katsushika Ward is within the service area of Kakeru Koumuten Co., Ltd. Based on our headquarters and showroom in Aoba-ku, Yokohama, as well as our Machida branch and material storage in Aoba-ku and Asahi-ku, we serve various regions in Kanagawa Prefecture and Tokyo. Please confirm the costs for on-site surveys and estimates, as well as the service area when you inquire.
Leave your renovations in Katsushika Ward to Kakeru Koumuten Co., Ltd.!
“I want my renovation to last long with just one time,” “I want to keep costs down as much as possible,” “I want to improve insulation because my home is hot”—we will listen to your specific requests and propose necessary work based on the condition of the building and your budget.
We welcome comparative estimates. Please compare the scope of work, materials, and warranty conditions.
Get a free estimate or consultation here
If our company is inferior to others, you are free to decline.
View Kakeru Koumuten’s construction examples
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10Features of Katsushika Ward
Katsushika Ward in Tokyo is known for areas like Shibamata, Kameari, and Kanamachi, featuring rivers such as the Arakawa and Edogawa alongside residential areas. It is important to check the condition of the building along with the terrain, flood risk, and road conditions, which vary by location.
For older homes, we consider earthquake resistance, insulation, and leak prevention measures tailored to the condition of the building. Kakeru Koumuten Co., Ltd. is headquartered in Aoba-ku, Yokohama, and offers renovations primarily focused on exterior work such as roofs and walls in various regions of Kanagawa Prefecture and Tokyo, including Katsushika Ward.
Areas Available for Renovation
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
Areas Served in Katsushika-ku, Tokyo (Main Regions)
Aoto / Okudo / Ohanajaya / Kanamachi / Kanamachi Water Purification Plant / Kamakura / Kameari / Kosuge / Shibamata / Shiratori / Shin-Koiwa / Takasago / Takaracho / Tateishi / Shinjuku / Nishi-Kameari / Nishi-Shin-Koiwa / Nishi-Mizumoto / Higashi-Kanamachi / Higashi-Shin-Koiwa / Higashi-Tateishi / Higashi-Horikiri / Higashi-Mizumoto / Higashi-Yotsugi / Hosoda / Horikiri / Mizumoto / Mizumoto Park / Minami-Mizumoto / Yotsugi and other areas throughout Katsushika-ku
・Roof Repair and Renovation in Katsushika
・Exterior Renovation in Katsushika
・Exterior Wall Painting in Katsushika
・Exterior Wall Overlay Method in Katsushika
・Leak Repair in Katsushika
・Waterproofing Work in Katsushika
・Skylight Repair and Replacement in Katsushika
・Rain Gutter Repair and Cleaning in Katsushika
・Solar Panel Installation in Katsushika
・Exterior Wall Cleaning in Katsushika
・Large-Scale Repair Work in Katsushika
・Kakeru Koumuten’s Work Achievements
・Kakeru Koumuten’s Service Menu and Price List
・Reasons to Choose Kakeru Koumuten
・Kakeru Koumuten’s Warranty and Aftercare
・Kakeru Koumuten Company Overview
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株式会社翔工務店へ
株式会社翔工務店は平均年齢２０代後半の若い会社ですが、技術はどこにも負けていません。
いちばんの強みは、足場工事、屋根工事、塗装工事とすべて自社で行えること。一般には分業されるこの業界にあって、一式で頼めるので管理に手間がかからず、コストも抑えることが出来ます。何より、トラブルがあればすぐにかけつけます！
自信をもって、宣言できます。私たちは、神奈川で一番若くて親切なリフォーム屋です！
