[Musashimurayama City, Tokyo] Renovation of Vacant Houses and Used Properties | Costs, Subsidies, and Case Studies

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

Musashimurayama City in Tokyo is a town in northern Tama where housing complexes and single-family homes spread at the foot of the Sayama Hills. It is characterized by a rich green environment and a calm living atmosphere, with no train stations and plans for the extension of the Tama City Monorail.

Housing complexes and single-family homes developed during the Showa era, such as Murayama Housing Complex, 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 complex units and renovating (renovating) them to fit one’s lifestyle” is expanding in Musashimurayama City.

02Reasons for Renovating Vacant Houses and Used Properties

In recent years, the Japanese housing market has expanded options for utilizing not only new constructions but also renovated used properties. There is a growing interest in living in renovated or refurbished used homes. 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 homes often have issues with the roof, exterior walls, and water facilities, 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 at a lower cost 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 valued low as they are, but renovations can enhance their appearance and performance, increasing their value as properties.

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 others, 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 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. 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 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 Condition of the Building

For used properties and vacant houses, it is crucial to check which parts are deteriorating 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 identify 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 houses built before that may not meet current standards. Furthermore, in 2000, regulations regarding joints and foundations were strengthened, making older buildings more likely to lack earthquake resistance. Check the condition of the building before starting work and be sure to check the earthquake resistance and insulation.

Point 4 Check Subsidy Programs and Renovation Tax 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 renovations, and barrier-free modifications. Tax deductions include the “housing loan tax deduction” when using a housing loan, and there are systems that allow for deductions on certain works even with personal funds. These can sometimes be combined, so it is essential to check in advance and use them strategically as a key to successful renovation (for the latest information, see this subsidy section).

04Cost Estimates for Renovating Vacant Houses and Used Properties

The renovation costs for used properties and vacant houses vary significantly depending on the extent of damage and the scope of work. First, please understand the approximate costs by area to use 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 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 for rooftops and updates to plumbing and wiring for the entire house may exceed the above estimates based on area and method. Please confirm the exact costs through a free on-site survey and estimate.

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

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

* The following information is as of September 3, 2026. The contents, 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 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.

Tokyo Metropolitan Program

Musashimurayama City Programs

06Customer Voices

Exterior Renovation Case Studies in Musashimurayama City

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

There are many renovation companies that serve Musashimurayama City, and many people may be unsure of which one to choose. When requesting renovations, let’s check the following 5 points.

1. Rich 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 envision the project after hiring, which is reassuring. If you have concerns, choose a contractor with rich 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 posts. In particular, Google reviews are useful, but do not decide solely based on reviews; make a comprehensive judgment along with work achievements, estimates, and warranty details.

2. Check for warranties and aftercare services

When choosing a contractor, be sure to check for the presence or absence of a warranty. If repairs are needed within the warranty period, they may be done for free. The duration varies 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, making annual inspections possible.
For more details on Kakeru Koumuten’s warranty and after-sales maintenance, click here

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, 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,” “check the undercoat materials, sealing materials, and paint for auxiliary parts,” and “confirm the process” in detail. Lowering the rank of auxiliary parts or skipping processes can reduce costs, so it is essential to not make judgments based solely on price.
For more details on points to compare estimates

4. Confirm whether the company performs renovations in-house

At Kakeru Koumuten Co., Ltd., we carefully listen to and investigate the existing “condition,” “location,” “base materials,” “desired durability,” and “design” to propose the best plan. While there is nothing inherently wrong with a system where partner companies perform the work, it is important to check whether the contracted company understands the work content and clearly defines the responsibilities for quality control and warranty. If the work is done in-house, it is easier to coordinate with the site and respond quickly in case of any issues.

5. Check if they offer color simulations and perspective drawings

Choosing colors and visualizing the finished look can be challenging for both exterior and interior projects. With simulations, you can reduce the risk of mistakes like “it looks different than I imagined.” Since it is difficult to redo once the work is done, it is recommended to select a company that can provide flexible simulations.

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

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

1. Equipment specialized for in-house remodeling

At Kakeru Koumuten, we have organized warehouses and material storage to provide high-quality remodeling at low costs. We have five bases in Kanagawa and Tokyo, including Aoba-ku, Yokohama and Machida City, Tokyo.

In-house scaffolding materials

We can construct the necessary temporary scaffolding for exterior remodeling using our own scaffolding materials and in-house scaffolding team. By not outsourcing, we can cut costs on 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 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 types of waste such as paint, wood, and metal are generated. Our company is committed to separating and recycling waste materials to reduce waste 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 focused on exterior work

A major strength of Kakeru Koumuten Co., Ltd. is our in-house construction focused on exterior work. By maintaining a consistent system from inquiry to project completion, we can keep costs down while delivering high-quality renovations. A single representative handles everything from estimates to project completion, ensuring smooth communication without changes in sales or project management. From the installation of temporary scaffolding to exterior wall painting and roof renovations, we primarily employ 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 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 each year. If you have concerns about the warranty, please click on the image above for more information.

5. Flexible and Prompt Response

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

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 vary depending on the existing materials and shapes, we conduct regular technical training to ensure that each staff member can respond to various sites.
Click here for company information

7. Flexible simulations for both exterior and interior renovations!

Kakeru Koumuten Co., Ltd. is dedicated to helping our customers choose colors and designs for their important building renovations, ensuring their satisfaction with both exterior and interior work.

7-1. Exterior Renovation Simulation

We can create color simulations for exterior wall painting, as well as simulations for metal siding and roof overlays. We can generate 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 provide 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 battery installation work!

As part of renovations for used properties, more customers are introducing solar power systems, which have generous 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、特に雨漏りやシロアリ被害のリスクが高まります。また、周辺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ことがあります。早めにリフォームを行うことで、これらのリスクを軽減し、資産を守ることができます。