[Hachioji 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 Hachioji City

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 Hachioji City, will clearly explain the key points for a successful renovation.

Be sure to obtain estimates from at least 3 companies!

01Reasons for the Increase in Renovations of Used Properties and Vacant Houses in Hachioji City

Hachioji City in Tokyo is a core city in the Tama region, with a wide area that includes urban areas, hilly suburban residential areas, and mountain villages. It features both residential areas like Hachioji New Town and Mejirodai, as well as a university town with many educational institutions.

Residential areas developed during the Showa period are now around 40 to 50 years old, marking a time when the circulation of used properties and measures for vacant houses are progressing. This is why the option of “buying a used detached house and renovating (renovation) it to fit one’s lifestyle” is expanding in Hachioji City.

02Reasons for Renovating Vacant Houses and Used Properties

In recent years, the Japanese housing market has expanded options not only for new builds but also for renovating used properties. There is a growing interest in living by purchasing and renovating used houses. Here, we explain the typical reasons for renovating vacant houses and used properties.

Reason 1 To Live Comfortably as Your Own Home

The most common reason for purchasing and renovating a used property is “to live comfortably.” Older houses often have issues with roofs, exterior walls, and plumbing, making them difficult to live in as they are. By renovating and upgrading 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

There is an increasing number of people purchasing and renovating used properties with the intention of selling them. Used houses tend to be valued low in their current state, but renovations can enhance their appearance and performance, thereby increasing their value as properties.

Reason 3 To Utilize as Investment or Business

When purchasing for investment or business purposes, renovations are essential. By transforming into stylish rentals or share houses, you can differentiate from other properties, and depending on the location and planning, you can also expect improved profitability. Initial costs can be lower than new construction, and depending on the use and conditions, there may be subsidies or tax incentives available, 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 that can perform the work thoroughly according to your wishes, the structure of your home, and the surrounding environment, and that 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 confirm 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. Additionally, in 2000, regulations regarding joints and foundations were strengthened, making older buildings more likely to lack earthquake resistance. Check the condition of the building before starting 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 a portion of 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 that allow for a portion of costs to be deducted even with personal funds for certain works. 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 can 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 typical single-family homes. The interior is based on a single room of about 6 tatami mats, and the exterior is based on the indicated scope of work. Actual estimates will be provided after a site survey).

1. Roof and Exterior Walls

2. Interior (Interior Finishing)

3. Water Facilities

4. Equipment and Infrastructure

5. Waterproofing and Earthquake Resistance

6. Exterior Works

*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 Hachioji City

*The following information is current as of September 3, 2026. The content, duration, and budget of the systems change annually, and many will end once the budget limit is reached. Please check for the latest information with our company or the respective offices before applying. Kakeru Koumuten can assist with confirming the systems and providing necessary documents, but the application methods and applicants may vary by system.

National Program: Housing Energy Saving 2026 Campaign

The government is implementing multiple subsidy projects targeting energy-saving renovations under the “Housing Energy Saving 2026 Campaign.” Construction for insulation, windows, and water heaters may be eligible for these subsidies when used in combination.

Tokyo Metropolitan Program

Hachioji City Programs

06Customer Voices

Exterior Renovation Case Studies in Hachioji City

07How to Choose a Renovation Contractor for Used Properties and Vacant Houses in Hachioji City

There are many renovation companies that serve Hachioji City, and it can be confusing to decide which one to choose. When requesting renovations, be sure to check the following 5 points.

1. Experience in renovation work

Many renovation contractors publish their construction results on their websites. If a contractor provides detailed explanations of the process with photos, it makes it easier to visualize what to expect after the request, giving you peace of mind. If you’re feeling uncertain, choose a contractor with ample experience.

Google and review sites can also be helpful. It’s important to check the content of low ratings, the company’s responses, and the timing of the posts. Google reviews are particularly useful, but don’t make your decision based solely on reviews; consider construction results, estimates, and warranty details for a comprehensive assessment.

2. Check for warranties and aftercare services

When choosing a contractor, be sure to check for the presence of a warranty. If repairs are needed within the warranty period, they may be done for free. The duration varies by contractor and paint type, but typically ranges from 1 to 10 years (emergency repairs and partial repairs are often not covered). Some contractors also offer after-sales service in addition to the warranty, so be sure to check that as well.

Kakeru Koumuten Co., Ltd. provides a warranty for exterior renovations and sealing work. We also conduct after-sales maintenance and send out annual notification DM to ensure annual inspections are possible.
Click here for more details on Kakeru Koumuten’s warranty and after-sales 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 scope of work, warranties, after-sales services, and prices can vary significantly. Having multiple estimates makes it easier to negotiate prices.

When comparing estimates, it is important to look at not only the costs but also the “items in the estimate,” “confirmation of undercoating materials, sealing materials, and additional paint,” and “confirmation of the process.” Lowering the rank of additional components or skipping processes can reduce costs, so it is crucial to not judge solely based on price.
Click here to see detailed points for comparing estimates

4. Confirm whether the company performs renovations in-house

At Kakeru Koumuten Co., Ltd., we conduct detailed hearings and investigations regarding the existing “condition,” “location,” “base materials,” “desired durability,” and “design” to propose 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 contracted company understands the scope of work and clearly defines responsibility for quality control and warranty. If the work is done in-house, it is easier to coordinate with the site, allowing for quicker responses in case of any issues.

5. Check if they offer color simulations and perspective drawings

Choosing colors and images for both exterior and interior work can be challenging after construction. With simulations, you can reduce the risk of mistakes like “it looks different than I imagined.” Since it’s 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 Renovations of Used Houses in Hachioji

One reason is that “Kakeru Koumuten also serves Hachioji,” but
“Our unique approach to renovating vacant houses and used properties that cannot be imitated by other companies”
has received high praise from many customers.

1. Equipment Specialized for In-House Renovations

Kakeru Koumuten has organized warehouses and material storage to provide high-quality renovations at low cost. We have five 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, we can achieve cost reductions on scaffolding work. We own scaffolding materials for approximately 50 houses.

Storage of Materials in Our Large Warehouse

We store roofing materials and paints. By placing large orders at once, we can procure materials at a lower cost, and since we always have stock available, we can respond quickly in emergencies. We also have various tools ready for different types of construction, including compressors and cleaning machines.

In-house waste separation

In exterior renovations, various waste materials such as paints, wood, and metals are generated. Our company properly separates and recycles waste materials, also working to reduce 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-insulating paints can also be conducted. The showroom is a 3-minute walk from Eda Station in Aoba-ku, Yokohama, and is accessible from within Tokyo.

2. In-house construction system for exterior work

A major strength of Kakeru Koumuten Co., Ltd. is its in-house construction system for exterior work. By managing everything from inquiries to project completion consistently, we maintain quality while keeping costs down. Since one representative handles everything from estimates to project completion, communication is smooth. We carry out temporary scaffolding, exterior wall painting, and roof renovations primarily with our own skilled workers, while we organize an appropriate system for interior and equipment work based on the content. 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, 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 each 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 with 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 only.

6. Human Resource Development

We create various models to enhance 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 committed 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 color patterns based on our recommendations. 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 from actual floor plans.

8. We also handle solar panel and battery installation work!

As part of renovations for used properties, more customers are introducing solar power systems, which have substantial subsidies available. Kakeru Koumuten Co., Ltd. also handles solar power system installations and proposes solar panels tailored to the shape of your roof. We can also accept requests for estimates and power generation simulations only.

空き家を放置すると、劣化や損傷が進行しやすく、最終的には大規模な修理が必要になることがあります。また、周囲の環境にも悪影響を及ぼし、治安の悪化や資産価値の低下を招く可能性があります。定期的な点検やメンテナンスを行うことで、これらのリスクを軽減することができます。