[Nakai Town, Kanagawa Prefecture] Renovation of Vacant Houses and Used Properties | Costs, Subsidies, and Case Studies

Kakeru Koumuten Co., Ltd. – Your Trusted Roofing Experts

At Kakeru Koumuten Co., Ltd., we specialize in roofing, rain gutters, and exterior painting services. Our team is dedicated to providing high-quality workmanship and exceptional customer service.

Our Services

• Roof Overlay (Cover Method)
• Rain Gutter Installation and Repair
• Exterior Painting

We understand the importance of a durable and aesthetically pleasing roof. That’s why we use the best materials and techniques to ensure your home is protected and looks great.

Contact Us

If you have any questions or would like to request a quote, please don’t hesitate to reach out. You can contact us at 0123-456-789.

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For those considering renovation of used properties and vacant houses in Nakai Town

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 available.

For such concerns, Kakeru Koumuten Co., Ltd., which has numerous achievements in Nakai Town, 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 Nakai Town

Nakai Town is a peaceful town blessed with the natural beauty of hills and rural landscapes. Surrounded by Hadano, Hiratsuka, and Odawara, it is a tranquil and livable area close to the Den-en-toshi Line and the Hadano Nakai IC on the Tomei Expressway.

The old wooden houses and settlements scattered across the hills are at a stage where they need to address seismic and thermal insulation issues, making them attractive as options for relocation and dual residences. This is why the choice of “buying a used detached house and renovating (reforming) it to suit one’s lifestyle” is expanding in Nakai Town.

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 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 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 difficult to live in 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 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 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 plan, 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 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 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 check which parts are deteriorating and to what extent beforehand. Because the property has been occupied by someone else, internal damage is often not apparent without investigation. Make sure to understand any hidden deterioration through a current condition survey before starting the 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 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 the earthquake resistance and insulation.

Point 4 Check Subsidy Programs and Renovation Tax Deductions

To reduce construction costs, 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 mortgage, 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 crucial 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 significantly depending on the extent of damage and the scope of work. First, please familiarize yourself with 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 Equipment

4. Equipment and Infrastructure

5. Waterproofing and Seismic 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 depending on area and method. Please confirm the exact costs through a free on-site survey and estimate.

For more details, please check our construction menu and price list!

05[Latest 2026] Subsidies and Grants Available in Nakai Town

*The following information is as of September 7, 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 applicant and application methods vary by system.

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 combined subsidies.

Nakai Town Programs

06Customer Feedback

Exterior Renovation Case Studies Around Nakai Town

07How to Choose a Renovation Contractor for Used Properties and Vacant Houses in Nakai Town

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

1. Rich experience in renovation work

Many remodeling 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 the project after hiring them, 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; evaluate them alongside construction results, estimates, and warranty details for a comprehensive judgment.

2. Confirm the presence of warranties and after-sales maintenance

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 after-sales services separate from warranties, 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, making annual inspections possible.
Click here for more details about Kakeru Koumuten’s warranties and after-sales maintenance

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

When requesting remodeling, be sure to obtain estimates from multiple contractors. Even for the same construction content, warranties, after-sales services, and prices can vary significantly. Having multiple estimates makes it easier to negotiate prices.

When comparing estimates, look at not just the costs but also the “items in the estimate,” “check the undercoat materials, sealing materials, and auxiliary paint,” and “confirm the process” in detail. Lowering the rank of auxiliary components or skipping steps can reduce costs, so it’s important not to judge solely based on price.
Click here to see detailed points for comparing estimates

4. Confirm whether the contractor performs the remodeling 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 perform 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 a quicker response in case of any troubles.

5. Do they support color simulations and perspective drawings?

Choosing colors and envisioning the appearance after construction can be challenging for both exterior and interior projects. With simulations, you can reduce the risk of mistakes like “it turned out differently than I imagined.” Since it is difficult to redo once 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 Nakai Town

One reason is that “Kakeru Koumuten also serves Nakai Town,” 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 organized warehouses and material storage to provide remodeling work at low cost with high quality. We have five bases in Kanagawa and Tokyo, including Aoba-ku, Yokohama, and Machida City, Tokyo.

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 waste materials such as paint, wood, and metal are generated. Our company properly separates waste materials and recycles those that can be reused, striving to reduce environmental impact and 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 range of catalogs. You can also confirm heat insulation properties using a heat insulation paint testing machine and color simulation. 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 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 the estimate to project completion, ensuring smooth communication without changes in sales or construction management. We carry out construction with our own craftsmen, from temporary scaffolding setup to exterior wall painting and roof renovations. We are confident in our plans and costs, so we welcome competitive estimates.

3. Various Permits and Skilled Workers

We have obtained construction industry licenses and permits for industrial waste collection and transportation. 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 painting and joint sealing work come with a warranty. Aftercare is available every year, and we send out notification DM each year. If you are concerned 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. Even if you cannot access the roof at high places, we can respond with 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 only.

6. Human Resource Development

We create various models for skill enhancement and conduct practical training. Since exterior renovations vary in construction methods and materials based on 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 is dedicated to helping you choose colors and designs for your important building renovation, both for the 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 schemes. 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. Based on your preferred style, such as modern, we will propose recommended simulations. We create realistic perspectives from actual floor plans.

8. Solar Panel and Storage Battery Installation Work Also Available!

More customers are introducing solar power systems, which have generous subsidies, in conjunction with renovations of used properties. Kakeru Koumuten Co., Ltd. also handles solar power installation work and will propose 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 Nakai Town | Frequently Asked Questions

We will answer the most frequently asked questions from those considering renovations of used properties and vacant houses in Nakai Town.

View Kakeru Koumuten’s construction examples
View construction menu and price list

10Features of Nakai Town

Nakai Town is a peaceful and livable area blessed with the nature of satoyama, featuring hills and rural landscapes. Surrounded by Hadano, Hiratsuka, and Odawara, it is a tranquil town close to the Hadano Nakai IC on the Tomei Expressway.

As older wooden houses and villages in the hills reach a generational transition, the demand for used homes combined with renovations, including relocation and utilization of vacant houses, is increasing. Kakeru Koumuten, headquartered in Aoba-ku, Yokohama, offers a wide range of exterior and interior renovations throughout Kanagawa Prefecture. We are capable of in-house construction, focusing on exterior work such as roofs and walls.

Areas Available for Renovation

Kakeru Koumuten accepts requests throughout Kanagawa and Tokyo Prefectures.

Consultations via LINE are also very welcome◎

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