[Reform of Vacant Houses and Used Properties in Kiyokawa Village, Kanagawa Prefecture]｜Costs, Subsidies, and Case Studies

For those considering renovation of used properties and vacant houses in Kiyokawa Village

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 Kiyokawa Village, 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 Kiyokawa Village

Kiyokawa Village is the only “village” in Kanagawa Prefecture, surrounded by the natural beauty of the Tanzawa Mountains, including Lake Miyagase and Miyagase Dam. Despite its proximity to the city center, it is blessed with rich greenery and clear streams, making it an attractive place for relocation and permanent residence.

Many old wooden houses in the mountains and villas/houses in Miyagase are at a stage where they require seismic, insulation, and moisture control improvements. This is why the option of “buying an old detached house or traditional house and renovating (renovating) it to suit one’s lifestyle” is expanding in Kiyokawa Village.

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. 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 the roof, exterior walls, and plumbing, making them difficult to live in as they are. By renovating and upgrading the facilities and interior, you can create a comfortable living environment. Additionally, by changing the layout and refreshing the interior, you can finish your home to suit 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 tend to be valued low in their current state, but renovations can improve their appearance and performance, thereby increasing their value as properties.

Reason 3 To Utilize as Investment or Business

For purchases made for investment or business purposes, renovations are essential. By transforming them into stylish rentals or share houses, you can differentiate them 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 purpose and conditions, they may also qualify for subsidies or tax incentives, leading to an increase in those 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 that 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 carry out the work thoroughly according to your wishes, the structure of the house, and the surrounding environment, and that also provides aftercare following the construction.

Point 2 Always Check the Condition of the Building’s Deterioration

For used properties and vacant houses, it is crucial to check which parts have deteriorated and to what extent beforehand. Since previous occupants have lived there, internal damage is often not apparent without investigation. Conduct a current condition survey before starting construction 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 construction 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, and part of the costs for earthquake retrofitting, energy-saving construction, and barrier-free renovations are supported. Tax deductions include the “housing loan tax deduction” when using a housing loan, and there are systems that allow for deductions on certain costs even with personal funds. These can sometimes be used in combination, so it’s essential to check in advance and plan to utilize them strategically for a successful renovation (for the latest information, see this subsidy section).

04Cost Estimates for Renovating Vacant Houses and Used Properties

The cost of renovating used properties and vacant houses varies 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-related 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 the 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 Kiyokawa Village

* The following information is as of September 7, 2026. The content, duration, and budget of programs change annually, and many will end once the budget limit is reached. Please check with our company or each office for the latest information before applying. Kakeru Koumuten can assist with confirming programs and necessary documents, but the application process and requirements may differ depending on the program.

National Program: Housing Energy Saving 2026 Campaign

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

Kiyokawa Village Program

06Customer Voices

Exterior Renovation Case Studies Near Kiyokawa Village

07How to Choose a Renovation Contractor for Used Properties and Vacant Houses in Kiyokawa Village

There are many renovation companies that serve Kiyokawa Village, 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 showcase 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’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. In particular, Google reviews are useful, but don’t make your decision based solely on reviews; consider the project achievements, estimates, and warranty details for a comprehensive assessment.

2. Check for Warranties and After-Sales Maintenance

When selecting a contractor, be sure to check for warranties. Repairs may be free within the warranty period. 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 services, so be sure to check that as well.

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

3. Obtain Estimates from Multiple Contractors (at least 3 companies)

When requesting a renovation, be sure to obtain estimates from multiple contractors. Even for the same work, warranties, after-sales service, and prices can vary significantly. Having multiple estimates makes it easier to negotiate prices.

When comparing estimates, it is important to look closely at not just the costs, but also the “items in the estimate,” “check the undercoat materials, sealing materials, and paint for auxiliary parts,” and “confirm the process.” Lowering the rank of auxiliary parts or skipping processes can reduce costs, so it is essential to not make judgments based solely on price.
Learn more about the 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,” and 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 contracting company understands the work details and has clear responsibilities for quality control and warranties. If the work is done in-house, it is easier to coordinate with the site, allowing for quick responses in case of any issues.

5. Check if they offer color simulations and perspective drawings

Whether for exterior or interior, deciding on the image and colors after construction can be challenging. 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 renovations of used houses in Kiyokawa Village

One reason is that “Kakeru Koumuten also serves Kiyokawa Village,” but
there are “initiatives in the renovation of vacant houses and used properties that cannot be imitated by other companies,”
which have received high praise from many customers.

1. Equipment Specialized for In-House Renovations

At Kakeru Koumuten Co., Ltd., we have organized warehouses and material storage areas to provide high-quality renovations at low costs. We have five bases located 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 In-House Warehouse

We store roofing materials and paints. By ordering in bulk, 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 available to handle different types of construction, including compressors and cleaning machines.

In-House Waste Separation

In exterior renovations, various waste materials such as paint, wood, and metal are generated. Our company strives to reduce environmental impact and disposal costs by properly sorting waste materials and recycling those that can be reused.

Showroom Dedicated to Exterior Renovations

In the showroom, you can not only have meetings but also check the actual paint colors and a wide range of catalogs. You can also confirm heat insulation properties using color simulation and heat-resistant paint testing equipment. The showroom is a 3-minute walk from Eda Station in Aoba-ku, Yokohama.

2. In-house Construction Focused on Exterior Work

A major strength of Kakeru Koumuten is our in-house construction focused on exterior work. By maintaining a consistent system from inquiry to project completion, we can provide high-quality renovations at reduced costs. Since one representative handles everything from the estimate to project completion, communication is smooth without changes in sales or construction management. We carry out work from temporary scaffolding setup to exterior wall painting and roof renovations primarily with our own craftsmen. We are confident in our plans and costs, so we welcome competitive estimates.

3. Obtaining Various Permits and Skilled Workers on Staff

We have obtained licenses 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 can handle 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 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 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.

6. Human Resource Development

To enhance skills, we create various models and conduct practical training. Since exterior renovations vary in construction methods and materials depending on the existing materials and shapes, we conduct regular skill enhancement training to ensure each staff member can handle various sites.
Click here for company information

7. Flexible Simulations for Both Exterior and Interior!

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

7-1. Exterior Renovation Simulation

We offer color simulations for exterior wall painting, as well as simulations for metal siding and roof overlays. We can create simulations based on actual photos of your building and propose several color patterns using our recommended color schemes. We also accommodate requests for “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. Solar Panel and Storage Battery Installation Work Available!

More customers are introducing solar equipment, which has generous subsidies, in conjunction with renovations of used properties. Kakeru Koumuten also handles solar equipment installation and can propose solar panels tailored to the shape of your roof. We can also accommodate requests for estimates and power generation simulations only.

09Renovation of Used Properties and Vacant Houses in Kiyokawa Village | Frequently Asked Questions

We answer frequently asked questions from those considering renovations of used properties and vacant houses in Kiyokawa Village.

See Kakeru Koumuten’s case studies
See our service menu and price list

10Features of Kiyokawa Village

Kiyokawa Village is the only “village” in Kanagawa Prefecture, surrounded by the natural beauty of the Tanzawa Mountains, including Lake Miyagase and Miyagase Dam. Despite its proximity to the city center, it is blessed with rich greenery and clear streams, making it an attractive place for relocation and settlement.

Old wooden houses and traditional farmhouses in the mountainous area are reaching a generational transition, leading to a growing demand for seismic and insulation upgrades for used homes, as well as renovations and restoration of traditional farmhouses. Kakeru Koumuten Co., Ltd. is headquartered in Aoba-ku, Yokohama, and offers a wide range of exterior and interior renovations throughout Kanagawa Prefecture. We can perform in-house construction primarily focused on exterior work such as roofs and walls.

Areas where we can provide renovation services

Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa and Tokyo Prefectures.

Consultations via LINE are also very welcome◎

We are also updating our Instagram regularly◎ Please follow us!