[Chuo-ku, Tokyo] Vacant House and Used Detached House Renovation | Costs, Subsidies, and Case Studies
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For those considering renovations of used properties and vacant houses in Chuo-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 such concerns, Kakeru Koumuten Co., Ltd., which has numerous achievements in Chuo-ku, will clearly explain the key points for a successful renovation.
Obtain estimates from at least 3 companies!
01Reasons for the Increase in Renovations of Used Properties and Vacant Houses in Chuo-ku
Chuo-ku, Tokyo, is the heart of Tokyo, home to Ginza, Nihonbashi, and Tsukishima. While high-rise condominiums dominate the skyline, Tsukishima and Tsukuda still retain alleys, row houses, and wooden homes, creating a blend of old and new.
In wooden and row houses in areas like Tsukishima, there are buildings that have aged and require reassessment of seismic and insulation standards. In Chuo-ku, there is also the option to “buy a used apartment or house and renovate (renovate) it to fit urban living.”
Coexistence of High-Rise Condos and Tsukishima’s Alleys
Redeveloped high-rise condominiums coexist with the alleys and row houses of Tsukishima and Tsukuda. This area has a high demand for the renovation of used condominiums and houses.
Seismic Reinforcement of Wooden and Row Houses
In wooden houses remaining in Tsukishima and Tsukuda, confirming seismic resistance is crucial. Chuo-ku offers subsidies for seismic reinforcement work for buildings that meet certain conditions.
Urban Needs for Insulation and Energy Efficiency
Insulating windows and heat-reflecting roofs can lead to improvements in indoor environments. Depending on the construction details and application conditions, it may be possible to utilize energy-saving subsidies in Chuo-ku, Tokyo.
Demand for Apartment Renovations
For used apartments, renovations that combine water-related work, insulation, and layout changes are also options.
This article summarizes the reasons, points to consider, cost estimates, the latest subsidies for 2026, and how to choose contractors from the perspective of Kakeru Koumuten, aimed at helping those considering renovations of used properties and vacant houses in Chuo-ku 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 Chuo-ku. Our company, Kakeru Koumuten Co., Ltd., also receives numerous inquiries 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 utilizing renovated used properties. Interest in purchasing used homes for renovation and revitalization is also increasing. 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 may have issues with the roof, exterior walls, or water-related facilities, making them uncomfortable to live in as they are. By renovating and upgrading the facilities and interiors, you can create a comfortable living environment. Depending on the property price and scope of work, you can aim for a home that fits 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 both appearance and performance, thereby increasing the property’s value.
Reason 3 To Utilize as an Investment or Business
For purchases made for investment or business purposes, renovations are essential. By transforming properties into stylish rentals or share houses, you can differentiate them from other properties, and depending on the location and planning, you may also expect improved profitability. Initial costs can be lower than new constructions, and depending on the use and conditions, there may also be opportunities for subsidies and tax incentives, leading to an increase in people utilizing vacant houses for business.
03Points to Consider When Renovating Vacant Houses and Used Properties
Point 1 Choose a Reliable Contractor
First and foremost, it is essential to select a contractor you can trust to handle your renovation with peace of mind. For used 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 perform 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 in advance. Since the property has been lived in by someone else, internal damage is often not apparent without investigation. Be sure to understand any hidden deterioration through a current condition survey before starting construction.
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 homes built before that may not meet current standards. Additionally, in 2000, regulations for 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 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, barrier-free renovations, and more. Tax reductions include the “housing loan tax reduction” 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 checking in advance and planning to utilize them strategically is key to a successful renovation (for the latest information, see this subsidy section).
04 Cost Estimates for Renovating Vacant Houses and Used Properties
The renovation costs for used properties and vacant houses vary greatly 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 typical 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 & Painting | Approximately 200,000 to 800,000 yen |
| Roof Replacement & Overlay Method | Approximately 700,000 to 2,500,000 yen |
| Exterior Wall Painting | Approximately 600,000 to 1,500,000 yen |
| Exterior Wall Replacement & Overlay 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 & 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 Facilities
| 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 & 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 & 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 Maintenance (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 of 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.
For more details, please check the construction menu and price list!
05[Latest 2026] Subsidies and Grants Available in Chuo 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 Chuo Ward may be able to use.
*The following information is as of August 31, 2026. The details, 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 providing necessary documents, but the applicants and application methods may vary depending on the 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 related to insulation, windows, and water heaters may be eligible for these subsidies.
This program succeeds the “Child-Rearing Green Housing Support Project.” It is necessary to perform at least one of the specified “required construction” in rooms with openings exposed to the outside air, and eco-friendly housing equipment, child-rearing compatible renovations, disaster prevention improvements, and barrier-free renovations may also be eligible depending on conditions.
Subsidy upper limit guidelines: For houses built before 1991, up to 1,000,000 yen per unit (50,000 yen depending on construction content); for houses built from 1992 to 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. The subsidy amount is substantial and effective for countering cold, heat, and condensation. 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 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 EcoCute, hybrid water heaters, and EneFarm. It is a suitable program for older properties planning to replace their water heaters.
Subsidy amount guidelines: EcoCute 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 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 a substantial subsidy amount that can significantly enhance the insulation performance of existing homes.
High insulation windows and doors have a maximum subsidy of 2 million yen per unit based on performance and size (for security windows, the maximum is 3 million yen per unit), insulation materials are 1/3 of eligible expenses with a cap of 1 million yen, and high 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.
This system provides discounts on the purchase price when replacing energy-efficient air conditioners, refrigerators, water heaters, LED lighting, etc., at registered retailers.
Estimated discounts: Air conditioners 9,000 to 23,000 yen, refrigerators 14,000 to 26,000 yen, water heaters (eco-cute, etc.) 12,000 points, LED 4,000 yen, etc. Replacements are valid until March 31, 2027. Individuals with a residence in Tokyo are eligible. For more details, visit the official page.
This program broadly supports the introduction of solar power generation, storage batteries, high insulation windows, insulation materials, eco-cute, etc., into existing homes. It is aimed at those considering used homes 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, high-efficiency water heating, etc., are also subsidized by type of work (unit prices need to be confirmed). All programs are for existing homes. Applications for the 2026 fiscal year are also being accepted. For more details, visit the official page.
Chuo Ward Programs
For eligible wooden houses, subsidies may be available for earthquake diagnosis, reinforcement planning, and earthquake reinforcement work.
Seismic diagnosis and reinforcement plans are fully funded (no limit), while reinforcement work is covered at 1/2 with a cap of 3.3 million yen (households with individuals aged 65 or older or holders of a disability certificate are fully funded with a cap of 3.3 million yen). This applies to old seismic wooden structures that commenced construction before May 31, 1981, as well as new seismic standard wooden buildings that started construction between June 1, 1981, and May 31, 2000. An application and approval decision are required before contracting, and if you wish to start work within the fiscal year 2028, it is recommended to consult by October 2028. For more details, visit the official page of Chuo City.
This is a unique program by the ward that can be used for solar power, storage batteries, EneFarm, heat-insulating paint, etc. Additional subsidies are provided for participation in the “Chuo Eco Act.”
Solar power 100,000 yen/kW, cap of 350,000 yen (150,000 yen/kW and 420,000 yen when participating), storage battery 10,000 yen/kWh, cap of 100,000 yen, EneFarm 20%, cap of 250,000 yen, heat-insulating paint cap of 100,000 yen. Applications should be made about two weeks before starting construction from April 1, 2028, until the budget is exhausted. ※ High-insulation windows, insulation materials, and high-efficiency water heaters are not eligible for this subsidy, so those will utilize the Tokyo Metropolitan Energy-Saving Renovation Promotion Project. For more details, visit the official page of Chuo City.
This includes housing equipment improvement grants for those aged 65 and older, as well as home modifications under long-term care insurance for those certified as requiring nursing care or support. Eligibility requirements and the possibility of combining with other programs need to be confirmed in advance.
Barrier-free conversion 200,000 yen, bathtub replacement 379,000 yen, sink and washbasin replacement 156,000 yen, toilet conversion to Western style 106,000 yen, stair lift (straight 876,000 yen, curved 1,854,000 yen). The out-of-pocket expense is 10-30% of the costs. Consultation with a care manager is necessary before starting construction.
※ There are no general renovation subsidies in Chuo City. For window insulation, insulation materials, and high-efficiency water heaters, utilize the national “Housing Energy Saving 2026” and the Tokyo Metropolitan Energy-Saving Renovation Promotion Project (high-insulation windows cap of 2 million yen). Generous subsidies of up to 3.3 million yen are available for seismic reinforcement of wooden structures and row houses in the city center.
See also about renovation tax reductions and other systems
- Housing Loan Tax Reduction: If you utilize a housing loan for renovations that meet certain requirements, income tax deductions will be applied based on the year-end balance.
- Renovation Promotion Tax System (Investment-type Tax Reduction): For construction projects such as 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 construction for windows, insulation, or high-efficiency equipment, please consult us before starting the work.
Subsidies and tax reductions can sometimes be combined, but there are restrictions on duplication for the same construction work. Kakeru Koumuten will organize and propose “which systems 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)!
Kakeru Koumuten’s Roof Renovation Case Studies
| Construction Details | Roof Overlay Construction (Cover Method) |
|---|---|
| Existing Roofing Material | Colonial NEO |
| New Roofing Material | Ai-Gi Industry “Super Galtect” |
| Price Range | 1,200,000 to 1,300,000 yen (including tax) |
Our Proposal
We carried out a roof overlay construction using metal roofing material “Super Galtect” without removing the existing Colonial NEO. This construction method minimizes the area to be removed compared to a complete roof replacement, allowing us to utilize the existing roof.
07How to Choose a Renovation Contractor for Used Properties and Vacant Houses in Chuo Ward
There are many renovation companies that serve Chuo 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 after-sales maintenance
- Obtain estimates from multiple contractors (at least 3 companies)
- Confirm whether the company performs exterior work in-house
- Check if they offer color simulations and perspective drawings
1. Experience in Renovation Work
Many renovation contractors publish their project 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 have concerns, 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. Google reviews are particularly useful, but do not make your decision based solely on reviews; consider project achievements, estimates, and warranty details for a comprehensive assessment.
2. Check for Warranties and After-Sales Maintenance
When choosing 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 or partial repairs are often not covered). Some contractors also offer after-sales services in addition to warranties, so be sure to check that as well.
Kakeru Koumuten Co., Ltd. provides a warranty for all exterior renovations and sealing work. We also conduct aftercare maintenance and send out annual notification DM, allowing for annual inspections.
Click here for more details on Kakeru Koumuten’s warranty and aftercare maintenance
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, it is important to look at not only the costs but also the “items in the estimate,” “check the undercoating materials, sealing materials, and auxiliary paint,” and “confirm the process” in detail. Lowering the rank of auxiliary parts or skipping steps can reduce costs, so it is essential 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, we conduct detailed hearings and investigations regarding the existing “condition,” “location,” “base materials,” “desired durability,” and “design,” and propose suitable plans. 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 quality control and warranty responsibilities. If the work is done in-house, it is easier to coordinate with the site, making it quicker to respond in case of any troubles.
5. Check if they offer color simulations and perspective drawings
Both exterior and interior renovations can lead to concerns about the post-construction image and color choices. Having simulations 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 renovation of used houses in Chuo-ku
One reason is that Kakeru Koumuten Co., Ltd. serves Chuo-ku, but
our unique approach to “renovating vacant homes and used properties”
has received high praise from many customers.
We are confident in our “cost,” “quality,” and “plans” for renovations in Chuo-ku. Please compare our estimates with those of other companies.
The most important aspect of renovations is getting multiple estimates. Be sure to request estimates from at least 3 companies that operate in Chuo-ku!
1. Equipment Specialized for Exterior Renovations
At Kakeru Koumuten, we have established warehouses and material storage areas to provide exterior renovations. We have 5 bases located in Kanagawa Prefecture and Tokyo, including Aoba-ku, Yokohama and Machida City, Tokyo.
In-House Scaffolding Materials
We can construct the necessary temporary scaffolding for exterior renovations using our own scaffolding materials and in-house scaffolding team. By not outsourcing, we can achieve cost reductions on scaffolding work. We own scaffolding materials for approximately 50 detached houses.
Storage of Materials in Our Large In-House Warehouse
We store roofing materials and paints. By ordering and storing materials in bulk, we reduce procurement costs and improve the efficiency of construction preparation. We also have various tools to accommodate different exterior construction tasks, such as compressors and cleaning machines.
In-house waste separation
In exterior renovations, various waste materials such as paint, wood, and metal are generated. Our company separates waste by type and recycles as much as possible.
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 tests for heat-insulating paint can also be conducted. The showroom is a 3-minute walk from Eda Station in Aoba-ku, Yokohama, and is accessible from Tokyo as well.
2. In-house exterior construction
Kakeru Koumuten Co., Ltd. handles exterior construction from temporary scaffolding setup to exterior wall painting and roof renovations in-house. Since a dedicated representative manages the process from estimation to project completion, it facilitates easy information sharing with the site. For interior construction, we respond according to the specifics of the project. 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.
4. Warranty and Aftercare Maintenance
Exterior wall painting and joint sealing work come with a warranty. Aftercare maintenance is available annually, and we send out notification DM each year. If you have concerns about the warranty, please click the image above for more information.
5. Flexible and Prompt Response
We are equipped to handle various exterior troubles and situations. If we cannot access the roof at height, 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 exterior walls only.
6. Human Resource Development
We create various models for skill enhancement and conduct practical training. Since the construction methods and materials used for exterior renovations differ based on the existing materials and shapes, we regularly implement 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 assisting customers in selecting 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 patterns with our recommended color schemes. We also accommodate “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, 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 in conjunction with 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 Chuo Ward | Frequently Asked Questions
We answer the most frequently asked questions from those considering renovations of used properties and vacant houses in Chuo 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 in advance and providing an estimate for necessary renovations, you can create a feasible financial plan.
What renovations should be prioritized for an old house in Chuo-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 safety. After that, we will determine the priority for exterior elements such as the roof and walls, water areas (kitchen, bathroom, toilet), and insulation according to your budget and impact on your daily life. Since the deterioration situation cannot be judged solely by the age of the building, we recommend starting with a comprehensive inspection of the entire building, including the roof, walls, foundation, underfloor, and water areas.
I bought an old wooden house in Tsukishima, Chuo-ku. What should I do first?
For an old wooden house, the first step is to check the seismic resistance and insulation. The seismic assistance in Chuo-ku includes not only old wooden structures but also those built under the new seismic standards between June 1, 1981, and May 31, 2000. Seismic reinforcement work is subsidized at 1/2, with a maximum of 3.3 million yen, and households with elderly members can receive full funding up to 3.3 million yen. Windows, insulation materials, solar power, and heat-resistant coatings may also qualify for subsidies from Tokyo or Chuo-ku, depending on the conditions. For buildings facing alleys, it is also important to confirm the method for scaffolding and material delivery in advance.
How much does a full renovation (full remodel) cost?
The cost of a full renovation for a detached house varies greatly depending on the size of the building, the condition of deterioration, the scope of work, and the grade of equipment. Even for partial renovations, costs typically start at around 8 million yen, while large-scale renovations that include interior and exterior work, water areas, insulation, and seismic upgrades can exceed 15 million to 30 million yen. This is a general guideline, so we will first conduct an on-site survey 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 system. For example, the national “Mirai Eco Housing 2026 Project” requires registered contractors (construction companies) to apply. For seismic renovations and home modifications under long-term care insurance in your municipality, the application is generally made by the individual, but we will guide you through the necessary documents and process. We will also organize and inform you about “which systems can be utilized,” 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 issues such as 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 facilities. 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 residential land tax exemption will be revoked. Conducting an inspection early and carrying out necessary work according to your plans to live in, rent, sell, or utilize the property can ultimately help reduce costs.
I am concerned about seismic resistance. How can I assess the seismic safety of a used house?
The construction period is a significant guideline. Let’s check if it was built after June 1981 (new seismic standards) and further after June 2000 (strengthening of joint and foundation regulations). For wooden houses built before that, we recommend a seismic diagnosis. Your city may also have subsidies for seismic renovations of wooden houses, which can significantly reduce costs if you qualify (for details, see the above subsidy section). From diagnosis to renovation, Kakeru Koumuten Co., Ltd. is here to assist you.
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 that include water areas, 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 Chuo-ku within your service area? Will there be travel costs?
Yes, Chuo-ku is within the service area of Kakeru Koumuten Co., Ltd. We have five bases in Kanagawa Prefecture and Tokyo, including Aoba-ku, Yokohama and Machida City, Tokyo, allowing us to cover a wide range of both prefectures. The availability of our services may vary depending on the region and the nature of the work, so please contact us for more details. Estimates are free.
Leave your renovations in Chuo-ku to Kakeru Koumuten Co., Ltd.!
“I want my renovation to last a long time with just one project,” “I want to keep costs down as much as possible,” “I want to improve insulation because my home is hot”—we will propose suitable solutions for your specific requests. We will check the current state of your property and will not recommend unnecessary work, helping you prioritize your needs.
We are confident in our costs, quality, and planning, so we welcome competitive estimates. Our estimates are completely free.
Get your free estimate and consultation here
If you find our company inferior to others, feel free to decline.
See Kakeru Koumuten’s project examples
See our service menu and price list
10Features of Chuo-ku
Chuo-ku, Tokyo, is the heart of Tokyo, home to Ginza, Nihonbashi, Tsukiji, and Tsukishima. It is a town where new and old coexist, with redeveloped tower apartments alongside the alleys, row houses, and wooden homes that remain in Tsukishima and Tsukuda.
There are wooden houses in areas like Tsukishima that require checks for seismic and insulation standards, and renovations of used condominiums and single-family homes are also options. Kakeru Koumuten Co., Ltd. has bases in Aoba-ku, Yokohama, and Machida City, Tokyo, and provides renovations across a wide area in Kanagawa and Tokyo. We can handle exterior work such as roof construction, exterior wall painting, and roof overlay (cover method) with in-house construction.
Areas Available for Renovation
Kakeru Koumuten Co., Ltd. accepts requests in a wide range of areas in Kanagawa Prefecture and Tokyo. Please contact us in advance as there may be cases where we cannot accommodate depending on the region and the type of work.
Areas Covered in Chuo-ku, Tokyo (Main Areas)
Ginza / Nihonbashi / Nihonbashi Muromachi / Nihonbashi Ningyocho / Nihonbashi Kakigaracho / Nihonbashi Hakozakicho / Yaesu / Kyobashi / Shinkawa / Shintomi / Irifune / Minato / Akashicho / Tsukiji / Higashi Nihonbashi / Nihonbashi Bakurocho / Nihonbashi Yokoyamacho / Hatchobori / Tsukishima / Tsukuda / Kachidoki / Toyomaicho / Harumi and other areas throughout Chuo-ku
・Exterior Renovation in Chuo-ku
・Exterior Wall Painting in Chuo-ku
・Wall Overlay Method in Chuo-ku
・Waterproofing Work in Chuo-ku
・Skylight Repair and Replacement in Chuo-ku
・Rain Gutter Repair and Cleaning in Chuo-ku
・Solar Panel Installation in Chuo-ku
・Renovation Case Studies by Kakeru Koumuten
・Kakeru Koumuten’s Construction Menu and Price List
・Reasons to Choose Kakeru Koumuten
・Guarantee and Aftercare
・Company Overview of Kakeru Koumuten
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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！
