[Kakeru Koumuten Co., Ltd.] Renovation of Vacant Houses and Used Properties in Kunitachi City, Tokyo | Costs, Subsidies, and Case Studies

For those considering renovations of used properties and vacant houses in Kunitachi 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 serves the area of Kunitachi City, will clearly explain the key points for a successful renovation.

Always obtain at least 3 estimates!

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

Kunitachi City, Tokyo, is known as a cultural and educational city housing Hitotsubashi University, with well-planned residential areas centered around the cherry blossom and ginkgo-lined university avenue. The city has a high awareness of its landscape, maintaining an elegant streetscape.

Houses built during the Showa era are now at a turning point for generational change, requiring reassessment of seismic and insulation standards. This is why the option of “buying a quality used house and renovating it to fit one’s lifestyle” is expanding in Kunitachi City.

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 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 the roof, exterior walls, and plumbing, making them difficult to live in as they are. By renovating and updating the facilities and interior, you can create a comfortable living environment. Additionally, by changing the layout and refreshing the interior, you can finish 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 as they are, but renovations can improve 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 constructions, and depending on the use and conditions, there may also be subsidies and tax incentives, leading to an increase in those utilizing vacant houses for business.

03Points to Note When Renovating Vacant Houses and Used Properties

Point 1 Choose a Reliable Construction Company

First and foremost, it is essential to select a contractor you can trust to handle your renovation with peace of mind. For 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 carry out the work thoroughly in accordance with 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 confirm which parts are deteriorated and to what extent beforehand. 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 work.

Point 3 Review Earthquake Resistance and Insulation Performance

Particularly important in the renovation of used and vacant houses is the review of earthquake resistance and insulation. The earthquake resistance standards were significantly revised in 1981, and houses built before that may not meet current standards. Additionally, in 2000, regulations regarding joints and foundations were strengthened, making older buildings more likely to lack earthquake resistance. Check the condition of the building before starting work and be sure to check 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 renovations, and barrier-free modifications. Tax reductions include the “housing loan tax reduction” when using a housing loan, as well as systems that allow for deductions on part of the costs 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 market rates by area to serve as a guideline for your financial planning (the table below provides general estimates for single-family homes. The interior is based on a room of about 6 tatami mats, and the exterior is based on the indicated scope of work. Actual estimates will be provided after a site survey).

1. Roof and Exterior Walls

2. Interior (Interior Finishing)

3. Water-related Facilities

4. Equipment & Infrastructure

5. Waterproofing & 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.

Please check the construction menu and price list for more details!

05[Latest 2026] Subsidies and Grants Available in Kunitachi City

* 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 for the latest information with our company or each contact point before applying. Kakeru Koumuten can assist with confirming the systems and necessary documents, but the applicant and application method 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 for insulation, windows, and water heaters may be eligible for these subsidies.

Tokyo Metropolitan Program

Kunitachi City Programs

06Customer Voices

Exterior Renovation Case Studies in Kunitachi City

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

There are many renovation companies that serve Kunitachi City, and many may be unsure which one to choose. When requesting renovations, let’s check the following five points.

1. Have extensive experience in renovation work

Many renovation contractors publish their work achievements on their websites. If a contractor provides detailed explanations of the process with photos, it makes it easier to visualize the project after hiring, providing peace of mind. If you have concerns, choose a contractor with extensive experience.

Google and review sites can be helpful references. It is important to check the content of low ratings, the company’s responses, and the timing of the posts. In particular, Google reviews are useful, but do not make your decision based solely on reviews; consider the construction track record, estimates, and warranty details for a comprehensive judgment.

2. Confirm the presence of 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, but typically ranges from 1 to 10 years (emergency repairs and partial repairs are often not covered). Some contractors also offer aftercare services, so be sure to check for those as well.

Kakeru Koumuten Co., Ltd. provides warranties for exterior renovations and sealing work. We also conduct aftercare services and send out annual notification DM, allowing for annual inspections.
Click here for more details on Kakeru Koumuten’s warranties and aftercare services

3. Obtain estimates from multiple contractors (at least 3 companies)

When requesting renovations, be sure to obtain estimates from multiple contractors. Even for the same construction work, warranties, aftercare services, and costs can vary significantly. Having multiple estimates makes price negotiations easier.

When comparing estimates, it is important to look at not just the costs but also the “items in the estimate,” “check the undercoat materials, sealing materials, and paint for ancillary parts,” and “confirm the process.” Lowering the rank of ancillary parts or skipping steps can reduce costs, so it is crucial to not judge solely based on price.
See detailed points for comparing estimates

4. Confirm whether the company performs renovations in-house

Kakeru Koumuten Co., Ltd. conducts detailed hearings and surveys on the existing “condition,” “location,” “materials,” “desired durability,” and “design” to propose the optimal plan. While there is no inherent problem with the system where partner companies carry out the construction, it is essential to confirm whether the contracted company understands the construction details and clearly defines the responsibilities for quality control and guarantees. If the construction is done in-house, it becomes easier to coordinate with the site, allowing for quick responses in case of any troubles.

5. Do they support color simulations and perspective drawings?

Choosing colors and envisioning the look after construction can be challenging for both exterior and interior projects. With simulations, you can reduce the risk of mistakes like “it looks different from what I imagined.” Since it is difficult to redo once the construction is completed, it is recommended to choose a company that can provide flexible simulations.

08Reasons why Kakeru Koumuten is chosen for remodeling used houses in Kunitachi City

One reason is that “Kakeru Koumuten also serves Kunitachi City,” but
“our unique approach to remodeling 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 remodeling

Kakeru Koumuten has established warehouses and material storage areas to provide high-quality remodeling at low costs. We have five bases centered around Aoba-ku, Yokohama for material storage and showrooms.

In-house ownership of scaffolding materials

For exterior renovations, we can construct temporary scaffolding 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 detached houses.

Materials stored in our large in-house warehouse

We store roofing materials and paints. By placing large orders at once, we can procure materials at lower prices, 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 types of waste such as paint, wood, and metal are generated. While many contractors dispose of them all together, we separate and recycle waste materials, significantly cutting down on waste disposal costs.

Showroom dedicated to exterior renovations

In our showroom, you can not only have meetings but also check the actual paint colors and a wide variety of catalogs. You can also confirm the heat insulation properties using a heat insulation paint testing machine and color simulations. The showroom is a 3-minute walk from Eda Station in Aoba-ku, Yokohama. It is also accessible from within Tokyo.

2. Complete In-House Construction

A major strength of Kakeru Koumuten is our complete in-house construction. By maintaining a consistent system from inquiry to project completion, we can keep costs down while providing high-quality renovations. One single representative handles everything from the estimate to project completion, ensuring smooth communication without changes in sales or construction management. All work, from temporary scaffolding installation to exterior wall painting and roof renovations, is carried out by our own skilled craftsmen. 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 and painting specialists on staff, ensuring confidence in our construction techniques. We are capable of handling large-scale painting projects for factories and apartment complexes as well.

4. Warranty and Aftercare Maintenance

Exterior painting and joint sealing work come with a warranty. Aftercare is available annually, and we send out notification DM each year. If you are concerned about the warranty, please click on the image above for confirmation.

5. Flexible and Prompt Response

We are equipped to handle various exterior troubles and situations. If you cannot access the roof at high places, we can respond using a drone. We also use a thermal imaging camera for leak investigations. We respond according to our customers’ wishes and also accept emergency measures for sudden leaks from the exterior walls only.

6. Human Resource Development

We create various models for skill improvement and conduct practical training. Since exterior renovations vary in construction methods and materials based on existing materials and shapes, we regularly implement technical improvement education so that each staff member can respond to various sites.
Click here for company information

7. Flexible Simulations for Both Exterior and Interior!

Kakeru Koumuten is dedicated to helping you choose colors and designs for your important building renovations, both exterior and interior, to ensure your satisfaction.

7-1. Exterior Renovation Simulation

We can create 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 combinations. We also accommodate “test painting” and “arranging paint boards” to confirm the actual color tones.

7-2. Interior Renovation Simulation

We also support simulations and perspective drawings for interior renovations. We propose recommended simulations based on your preferred image, such as a modern style. Realistic perspectives will be created from actual floor plans.

8. Solar Panel and Storage Battery Installation Work Available!

More customers are introducing solar equipment with abundant subsidies for renovations of used properties. Kakeru Koumuten Co., Ltd. also handles solar equipment installation work and proposes 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 Kunitachi City | Frequently Asked Questions

We answer the most frequently asked questions from those considering renovations of used properties and vacant houses in Kunitachi City.

View Kakeru Koumuten’s construction examples
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10Features of Kunitachi City

Kunitachi City in Tokyo is known as an educational city that hosts Hitotsubashi University, with well-planned residential areas centered around the cherry blossom and ginkgo tree-lined University Avenue. There is a high awareness of landscape, and the elegant streetscape is maintained.

Houses developed during the Showa era are now entering a generational transition, and the choice to continue living in quality used homes with renovations is becoming established. Kakeru Koumuten is headquartered in Aoba-ku, Yokohama, and we undertake exterior and interior renovations across a wide range of areas in Kanagawa Prefecture and Tokyo. We can perform all construction in-house, including wall covering methods.

Areas Available for Renovation

Kakeru Koumuten accepts requests across a wide range of areas in Kanagawa Prefecture and Tokyo.

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