[Tachikawa City, Tokyo] Renovation of Vacant Houses and Used Properties | Costs, Subsidies, and Case Studies
For those considering renovations of used properties and vacant houses in Tachikawa City
I bought a used property, but I’m unsure if the renovation estimate provided 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 Tachikawa City, 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 Tachikawa City
Tachikawa City, Tokyo, is a central city in the Tama region, characterized by the redevelopment around Tachikawa Station and the expansion of single-family homes and housing complexes. It is popular for its abundant greenery, including the Showa Kinen Park, and its excellent commercial and transportation convenience.
Single-family homes and housing complexes developed during the Showa era are now entering a period of generational change, reaching 40 to 50 years old. This is why the option of “buying used single-family homes or housing units and renovating (renovating) them to suit one’s lifestyle” is expanding in Tachikawa City.
Convenience of Tachikawa, the Heart of Tama
Redevelopment around the station has enhanced commercial and transportation facilities. It is an area with high demand for used properties plus renovation due to its livable residential neighborhoods.
Updating of Showa-era Single-family Homes and Housing Complexes
Early single-family homes and housing complexes are now 40 to 50 years old. There is a growing need to update plumbing, insulation, and water-related facilities.
Generous City Subsidies for Earthquake Resistance
The seismic retrofitting in Tachikawa City is generous, covering 1/2 of the costs up to 1,000,000 yen, supporting the seismic reinforcement of older wooden houses.
Be Aware of the “Boundary” of New Seismic Standards
The seismic performance of used houses varies significantly depending on the construction period. It is crucial to determine whether the house was built before the revisions of the standards in 1981 and 2000.
This article summarizes the reasons, points to consider, cost estimates, the latest subsidies as of 2026, and how to choose a contractor from the perspective of Kakeru Koumuten, which also serves Tachikawa City, for those considering renovating used properties or vacant houses without “failure.”
The Most Important Thing is “Comparative Estimates”
To avoid failures in renovations, the most crucial step is comparative estimates. First, obtain estimates from at least three companies that operate in Tachikawa City. 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 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 in Your Own Home
The most common reason for purchasing and renovating a used property is “to live comfortably.” Older houses often have issues with the roof, exterior walls, and plumbing, making them less livable as they are. By renovating and updating the facilities and interiors, you can create a comfortable living environment. Additionally, by changing the layout and refreshing the interior, you can achieve a home that suits your family’s lifestyle while keeping 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 houses are often valued low in their current state, but renovations can enhance their appearance and performance, increasing their value as properties.
Reason 3 To Utilize as an Investment or Business
When purchasing for investment or business purposes, renovations are essential. By transforming a property into a highly designed rental or share house, you can differentiate it from other properties, and depending on the location and planning, you may also expect improved profitability. Initial costs can be lower than new construction, and depending on the use and conditions, there may 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 Construction Company
First and foremost, it is essential to select a contractor you can trust to handle your renovation with peace of mind. 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 properly 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 Condition 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 lived in by someone else, 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 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. 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 earthquake resistance and insulation performance.
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, supporting part of the costs for earthquake retrofitting, energy-saving construction, and barrier-free renovations. Tax deductions include the “housing loan tax deduction” 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 essential to check in advance and plan to utilize them strategically for 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 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 stated scope of work. Actual estimates will be provided after a site survey).
1. Roof and Exterior Walls
| Construction Content | Estimated Cost |
|---|---|
| Roof Repair & Painting | Approx. 200,000 – 800,000 yen |
| Roof Replacement & Overlay Method | Approx. 700,000 – 2,500,000 yen |
| Exterior Wall Painting | Approx. 600,000 – 1,500,000 yen |
| Exterior Wall Replacement & Overlay Method | Approx. 1,500,000 – 3,000,000 yen |
2. Interior (Interior Finishing)
| Construction Content | Estimated Cost |
|---|---|
| Floor Replacement (Approx. 6 tatami mats, flooring, etc.) | Approx. 100,000 – 300,000 yen |
| Wallpaper Replacement (Approx. 6 tatami mats) | Approx. 50,000 – 150,000 yen |
| Ceiling Repair & Painting (Approx. 6 tatami mats) | Approx. 30,000 – 100,000 yen |
| Renovation from Japanese-style Room to Western-style Room (1 room) | Approx. 200,000 – 600,000 yen |
3. Water-related Equipment
| Construction Content | Estimated Cost |
|---|---|
| Kitchen Replacement | Approx. 450,000 – 1,500,000 yen |
| Bathroom Renovation (Unit Bath) | Approx. 600,000 – 1,500,000 yen |
| Toilet Replacement | Approx. 120,000 – 500,000 yen |
| Vanity Replacement | Approx. 80,000 – 300,000 yen |
4. Equipment & Infrastructure
| Construction Content | Estimated Cost |
|---|---|
| Water Heater Replacement | Approx. 100,000 – 500,000 yen |
| Pipe Replacement (Aging Water Pipes, etc., Partial Work) | Approx. 100,000 – 500,000 yen |
| Electrical Wiring Work (Partial Work) | Approx. 100,000 – 500,000 yen |
| Insulation Renovation (Replacing Multiple Windows, Installing Inner Windows, etc.) | Approx. 200,000 – 1,000,000 yen |
5. Waterproofing & Seismic 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 Improvement (for 1 car, including concrete work, 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 roofs 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 Tachikawa City

One way to renovate used properties and vacant houses cost-effectively is to utilize subsidy and grant systems. As of 2026, we have summarized the main systems that residents of Tachikawa City may be able to use.
*The following information is as of September 2, 2026. The content, duration, and budget of the systems change annually, and many will end once the budget limit is reached. Please check with our company or the respective offices for the latest information before applying. Kakeru Koumuten can assist with confirming the systems and necessary documents, but the applicant and application methods vary by system.
National Program: Housing Energy Saving 2026 Campaign
The government is implementing several 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.” Renovations must meet specific requirements for each category, including mandatory work that involves insulation renovations of the structure (floor, walls, ceiling). Eco-friendly housing equipment, child-rearing compatible renovations, disaster prevention improvements, and barrier-free renovations may also be eligible.
Subsidy upper limit guidelines: For buildings constructed before 1991, up to 1 million yen per unit (50,000 yen depending on the construction details); for buildings constructed between 1992 and 2016, up to 800,000 yen per unit (400,000 yen for the same). Eligible construction must start 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 if the budget limit is reached). Applications must be submitted by registered contractors. For more details, visit the official page.
Renovations targeting window insulation, 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 depending on the window construction method, performance, size, and type of housing. 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 if the budget limit is reached). Applications must be submitted by registered contractors.
This program targets the replacement of high-efficiency water heaters such as EcoCute, hybrid water heaters, and EneFarm. It is well-suited for older properties planning to replace their water heaters.
Estimated subsidy amounts: 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 after November 28, 2025, and applications will be accepted starting March 31, 2026 (early termination if the budget limit is reached).
Tokyo Metropolitan Program
High thermal insulation windows (installation of inner windows, replacement of outer windows, glass replacement), high thermal insulation doors, insulation materials, and high thermal insulation bathtubs are eligible. This is a program with a significant subsidy amount 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 subsidized at 1/3 of 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 homes in Tokyo are eligible. The program is managed by Cool Net Tokyo. For more details, visit the official page.
This program offers 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: 9,000 to 23,000 yen for air conditioners, 14,000 to 26,000 yen for refrigerators, 12,000 points for water heaters (such as eco-cute), and 4,000 yen for LEDs, etc. Replacements are valid until March 31, 2027. Individuals with an address in Tokyo are eligible. For more details, visit the official page.
This program supports the installation of storage batteries in homes in Tokyo. It is suitable for those considering self-consumption and preparation for power outages in combination with solar power generation.
The subsidy amount and cap are calculated based on the capacity of the storage battery, equipment costs, and whether solar power generation equipment is present. Please check the application period, eligible equipment, and combined conditions in advance. For more details, visit the official page.
Tachikawa City Programs
Support for earthquake resistance in Tachikawa City, the central city of Tama. Simple earthquake diagnosis is free and is effective for earthquake resistance when purchasing used wooden detached houses.
The simple diagnosis is free, seismic diagnosis is 1/2 with a maximum of 100,000 yen, reinforcement design is 1/2 with a maximum of 100,000 yen, renovation work is 1/2 with a maximum of 1,000,000 yen, rebuilding is 1,000,000 yen, and removal is 500,000 yen. The target is wooden buildings constructed before May 31, 1981. Applications are being accepted for the 8th year of Reiwa (completion notification is due by February 26, 2029). For more details, please visit the official page of Tachikawa City.
This is a unique municipal system that can be used for insulation renovations of windows, doors, exterior walls, ceilings, and floors.
1/2 of the eligible construction cost, up to 50,000 yen. Note: Orders must be placed with local contractors, so our company (Aoba-ku, Yokohama) is generally not eligible. There is a possibility of early termination due to limited budget remaining. Insulation for windows can also utilize the national “Housing Energy Saving 2026” and Tokyo Metropolitan systems. For more details, please visit the official page of Tachikawa City.
Support is provided for housing renovations for the elderly (in conjunction with long-term care insurance) and the removal of dangerous block walls.
Elderly independence support: preventive benefits 200,000 yen, bathtub replacement 379,000 yen, sink/washbasin 156,000 yen, toilet modernization 106,000 yen. The removal of block walls, etc., is 6,500 yen per meter or the actual cost, whichever is lower, with a maximum of 300,000 yen; new construction has a maximum of 180,000 yen. Application before contract is required. The long-term care insurance housing renovation is also 200,000 yen.
* The insulation renovation subsidy from Tachikawa City is conditioned on construction by local contractors, so our company is generally not eligible. We can propose combinations of seismic (renovation up to 1,000,000 yen), elderly renovations, block wall removals, and the national “Housing Energy Saving 2026” and Tokyo Metropolitan systems that can be used by contractors outside the district. There are no municipal subsidies for solar power and storage batteries for residential use; the Tokyo Metropolitan system is the main focus.
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 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 efficiency, barrier-free access, 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 Efficiency Subsidy: You may be able to combine the above “Tokyo’s System” (energy-saving renovation promotion project for existing homes, Tokyo Zero Emission Points, etc.) with the national “Housing Energy Efficiency 2026 Campaign.” If you are considering construction for windows, insulation, or high-efficiency equipment, please consult us before starting work.
While subsidies and tax reductions can sometimes be combined, there are restrictions on duplication for the same construction. Kakeru Koumuten will organize and propose which systems can be used for your construction after conducting a site survey.
06Customer Voices
Exterior Renovation Case Studies in Tachikawa City

| Construction Location | Tachikawa City, Tokyo |
|---|---|
| Construction Content | Roof Cover Work |
| Existing Roofing Material | Slate |
| New Materials Used | D’s Roofing / Eco Gran |
| Price Range | 500,000 yen – 600,000 yen |
| Completion Month | December 2021 |
Our Proposal
We proposed the roof overlay (cover method) that installs new roofing materials over the existing slate without removal. For the new roofing materials, we have chosen the lightweight and natural stone grain finished Deez Roofing / Eco Granie. After confirming the condition of the existing roof, we select a construction method that minimizes the removal area and waste materials.
07How to Choose a Remodeling Contractor for Used Properties and Vacant Houses in Tachikawa City
There are many remodeling companies that serve Tachikawa City, and many people may be unsure of which one to choose. When requesting a remodel, be sure to check the following five points.
- Experience in remodeling work
- Check for warranties and aftercare services
- Obtain estimates from multiple contractors (at least three)
- Confirm whether they perform remodeling in-house
- Check if they offer color simulations and perspective drawings
1. Experience in Remodeling Work

Many remodeling contractors publish their construction achievements on their websites. If a contractor provides detailed explanations of the process with photos, it can help you visualize the outcome after your 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 the construction achievements, estimates, and warranty details for a comprehensive judgment.
2. Check for Warranties and Aftercare Services

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 generally ranges from 1 to 10 years (emergency repairs and partial repairs are often not covered). Some contractors also offer aftercare services separate from 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 to ensure annual inspections are possible.
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’s important to look at not just the costs, but also the “items in the estimate,” “check the undercoating materials, sealing materials, and paint for accessories,” and “confirm the process” in detail. Lowering the rank of accessories or skipping steps can reduce costs, so it’s essential to not judge solely based on price.
Learn more about points to compare estimates
4. Confirm whether the company performs renovations in-house

At Kakeru Koumuten, we conduct detailed hearings and investigations regarding the existing “condition,” “location,” “base materials,” “desired durability,” and “design” to propose the optimal plan. While there is nothing inherently wrong with a system where partner companies perform the work, it’s important to check whether the contracting company understands the work details and has clear responsibility for quality control and warranties. If the work is done in-house, it’s easier to coordinate with the site, making it quicker to respond in case of any issues.
5. Check if they offer color simulations and perspective drawings

Choosing colors and visualizing the image 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’s difficult to redo once the work is done, it’s advisable to choose a company that can provide flexible simulations.
08Reasons why Kakeru Koumuten is chosen for renovations of used houses in Tachikawa City
One reason is that Kakeru Koumuten Co., Ltd. serves Tachikawa City,
and our unique approach to “vacant house and used property renovations” that cannot be imitated by other companies
has received high praise from many customers.
We have absolute confidence in “cost,” “quality,” and “plans” for renovations in Tachikawa City. Please compare our estimates with those of other companies.
The most important aspect of renovations is multiple estimates. Be sure to request estimates from at least 3 companies that serve Tachikawa City!
1. Equipment Specialized for In-House Renovations
At Kakeru Koumuten, we have organized warehouses and material storage to provide high-quality renovations at low cost. We have 5 bases in Kanagawa and Tokyo, including Aoba-ku, Yokohama and Machida City, Tokyo.
In-House Scaffolding Materials


We can construct the temporary scaffolding required for exterior renovations 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. By placing large orders at once, we can procure materials at lower costs, and since we always have stock available, we can respond quickly in emergencies. We also have a variety of tools ready for different types of construction, including 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 properly separating waste and recycling materials that can be repurposed, thereby reducing environmental impact and disposal costs.
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-reflective paints 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 construction system for exterior work

Kakeru Koumuten Co., Ltd.’s strength lies in its in-house construction system focused on exterior work such as roofs and walls. We manage everything consistently from inquiries to project completion, with a single representative handling everything from estimates to the completion of the work. We can easily coordinate between temporary scaffolding, exterior wall painting, and roof renovations, and we will establish a system tailored to the project scope even if it includes interior and equipment work. 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
Exterior wall painting and joint sealing work come with a warranty. Aftercare is available annually, and we send out notification DM every year. If you have concerns about the warranty, please click the image above to check.
5. Flexible and Prompt Response

We are equipped to handle various exterior troubles and situations. If you cannot access the roof at height, we can respond using a drone. We also use a thermal imaging camera for leak investigations. We respond according to our customers’ wishes and can also handle emergency repairs for sudden leaks.
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 regularly implement technical improvement education 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, both exterior and interior, to ensure their 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 propose several patterns with our recommended color schemes. We also accommodate “sample painting” and “arranging paint boards” to confirm the actual colors.
7-2. Interior Renovation Simulation

We also support simulations and perspective drawings for interior renovations. Based on your preferred style, such as modern, we propose recommended simulations. We create realistic perspectives based on actual floor plans.
8. We also handle solar panel and storage battery installation!

More customers are introducing solar equipment, which has abundant subsidies, in conjunction with renovations of used properties. Kakeru Koumuten Co., Ltd. also handles solar equipment installation and proposes solar panels tailored to the shape of your roof. We can also accept requests for estimates and the creation of power generation simulations only.
09Renovation of Used Properties and Vacant Houses in Tachikawa City | Frequently Asked Questions
We answer the most frequently asked questions from those considering renovations of used properties and vacant houses in Tachikawa City.
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 a used house in Tachikawa City?
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 based on your budget and impact on your daily life. In the Tachikawa area, particularly around Tachikawa Station, it is common for the roof and exterior walls to reach the end of their lifespan first, so we recommend starting with a comprehensive inspection of the entire building, including the exterior.
I bought a used wooden house in Tachikawa City. Are there any subsidies available?
Tachikawa City offers generous support for seismic renovations of wooden houses (1/2, up to 1 million yen, with free simple diagnosis) and can be utilized even by contractors outside the city. There are also subsidies for elderly support housing renovations (e.g., 379,000 yen for bathtubs) and for the removal of block walls (up to 300,000 yen). *Please note that the city’s insulation renovation cost subsidy (1/2, up to 50,000 yen) is only available for work done by contractors within the city, so our company is generally not eligible. Insulation and windows are covered by the national “Housing Energy Efficiency 2026” program and the Tokyo Metropolitan Government’s system, and we will propose the best combination for you.
How much does a full renovation (full renovation) cost?
The cost of a full renovation for a house varies significantly depending on the scope and grade. If focusing on partial renovations, it typically starts from around 5 million yen, while large-scale renovations that include interior and exterior work, water areas, insulation, and seismic upgrades can exceed 10 million to 20 million yen. We will first assess the condition through an on-site inspection 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 seismic renovations and housing modifications under nursing 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 programs are available,” 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 progressing leaks and termite damage, decreased property 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 property tax exemption for residential land may be revoked. Conducting an inspection early and performing 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 resistance of a used house?
The construction period is a significant indicator. 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 detached houses built before this, we recommend a seismic diagnosis. Your municipality may also have subsidies for seismic retrofitting 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, 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 Tachikawa City within your service area? Will there be any travel costs?
Yes, Tachikawa City is within the service area of Kakeru Koumuten Co., Ltd. We have five bases in Kanagawa and Tokyo, including Aoba-ku, Yokohama, and Machida City, Tokyo. Estimates are completely free, and we do not engage in aggressive sales tactics. Please feel free to consult with us first.
Leave your renovations in Tachikawa City to Kakeru Koumuten Co., Ltd.!
“I want my renovation to last a long time with just one go,” “I want to keep costs down as much as possible,” “I want to improve insulation because my home is hot”—we will propose the best solutions to your specific requests. We do not suggest unnecessary work that prioritizes profit.
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 outright.
View Kakeru Koumuten’s construction examples
View construction menu and price list
10Features of Tachikawa City
Tachikawa City in Tokyo is a central city in the Tama region, characterized by redevelopment around Tachikawa Station and the spread of detached housing and housing complexes. With abundant greenery such as Showa Kinen Park, it is popular for its commercial and transportation convenience.
Detached houses and housing complexes developed during the Showa era are now reaching a generational transition, and the choice of buying used homes plus renovations is becoming established. Kakeru Koumuten Co., Ltd. has five bases in Kanagawa and Tokyo, offering a wide range of exterior and interior renovations. Exterior work such as roofing and wall construction is handled with a self-construction system.
Areas where renovations can be accommodated
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa and Tokyo.
Areas Served in Tachikawa City, Tokyo (Main Areas)
Akebono-cho / Izumi-cho / Ichiban-cho / Kashiwa-cho / Kamisuna-cho / Saiwai-cho / Sakae-cho / Shibazaki-cho / Sunakawa-cho / Takamatsu-cho / Nishisuna-cho / Hagoromo-cho / Fujimi-cho / Midori-cho / Wakaba-cho and other areas throughout Tachikawa City
・Check out Kakeru Koumuten’s renovation case studies here!
・Kakeru Koumuten Co., Ltd. Construction Menu and Price List
・Reasons why Kakeru Koumuten is chosen!
・About Kakeru Koumuten’s Warranty and Aftercare
・Company Overview of Kakeru Koumuten Co., Ltd.
・Staff Blog and Announcements of Kakeru Koumuten Co., Ltd.
・Roof Repair and Construction Achievements in Tachikawa City
・Exterior Renovation Achievements in Tachikawa City
・Exterior Wall Painting in Tachikawa City
・Leak Repair in Tachikawa City
・Solar Panel Installation Work in Tachikawa City
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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!





