Renovation of Vacant Houses and Used Properties in Samukawa Town, Koza District, Kanagawa Prefecture | Costs, Subsidies, and Case Studies

For those considering renovations of used properties and vacant houses in Samukawa

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 Samukawa Town, will clearly explain the key points for a successful renovation.

Always obtain estimates from at least 3 companies!

01Reasons for the Increase in Renovations of Used Properties and Vacant Houses in Samukawa Town

Samukawa Town is known for its blessings from the Sagami River and the famous power spot, Samukawa Shrine, making it a flat and livable town. It is well-connected by the JR Sagami Line and is close to Chigasaki and Ebina, where industry, agriculture, and residential areas coexist in harmony.

Residential areas developed during the Showa era are now entering a generational transition period, with many homes reaching 40 to 50 years old. This is why the option of “buying a used house and renovating (or remodeling) it to suit one’s lifestyle” is expanding in Samukawa 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 in renovated or refurbished 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 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 a new build.

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 in their current state, but renovations can enhance both appearance and performance, thereby increasing the property’s value.

Reason 3 To Utilize as an 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 or 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 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 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 Deterioration of the Building

For used properties and vacant houses, it is crucial to confirm which parts are deteriorating and to what extent beforehand. Since previous occupants lived there, internal damage is often not apparent without investigation. Make sure to understand any hidden deterioration through a current condition survey before starting construction.

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 construction and be sure to check 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 construction, and barrier-free renovations. 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 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 vary significantly depending on the extent of damage and the scope of work. First, please understand the approximate costs by area as a guideline for your financial planning (the table below provides general estimates for typical detached houses. 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 & 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 Samukawa 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 method may vary depending on the 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 related to insulation, windows, and water heaters may be eligible for these subsidies.

Samukawa Town Program

06Customer Voices

Roof Renovation Case Studies in Samukawa Town

07How to Choose a Remodeling Contractor for Used Properties and Vacant Houses in Samukawa Town

There are many remodeling companies that serve Samukawa Town, and it can be confusing to decide which one to choose. When requesting a remodel, be sure to check the following 5 points.

1. Experience in remodeling work

Many remodeling contractors publish their construction achievements on their websites. If a contractor provides detailed explanations of the process with photos, it makes it easier to visualize the outcome after the request, giving you peace of mind. If you have concerns, choose a contractor with ample 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 the posts. In particular, Google reviews are useful, but do not make your decision based solely on reviews; consider construction achievements, estimates, and warranty details for a comprehensive assessment.

2. Check for warranties and aftercare services

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 aftercare services in addition to warranties, so be sure to check for those as well.

Kakeru Koumuten Co., Ltd. provides warranties for exterior remodeling 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 a renovation, 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, 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” should be carefully compared. Lowering the rank of additional components or skipping processes can reduce costs, so it is important not to judge solely based 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 optimal 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 becomes 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 visualizing the image after construction can be challenging for both exterior and interior work. With simulations, you 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 accommodate flexible simulations.

08Reasons why Kakeru Koumuten is chosen for renovations of used houses in Samukawa Town

One reason is that “Kakeru Koumuten also serves Samukawa Town,” but
“our unique approach to renovations of 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 Co., Ltd. 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 necessary for exterior renovations using our own scaffolding materials and in-house scaffolding team. This leads to cost reductions in scaffolding work since we do not outsource. We have 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 lower prices, and since we always have stock available, we can respond quickly in emergencies. We also have various tools to handle different types of construction, including compressors and washing machines.

In-House Waste Separation

In exterior remodeling, various waste materials such as paint, wood, and metal are generated. Our company is committed to properly sorting waste materials and recycling what is possible, thereby reducing environmental impact and disposal costs.

Exterior Remodeling 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 paint can also be conducted. 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 strive to manage costs and quality. Since one representative handles everything from estimation to completion, there is no change in personnel for sales and construction management, allowing for smooth communication. We handle everything from temporary scaffolding installation to exterior wall painting and roof remodeling, focusing on in-house construction. We are confident in our plans and costs, so we welcome competitive estimates.

3. Acquisition of Various Permits and Skilled Workers on Staff

We have obtained licenses for construction work and 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 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 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 based on existing materials and shapes, we regularly implement skill enhancement training to ensure each staff member can respond to 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 achieve satisfaction with the renovation of their important buildings, assisting with color selection and design for both exterior and interior projects.

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 schemes that we recommend. We also accommodate “test painting” and “sample board arrangements” to confirm the actual color tones.

7-2. Interior Renovation Simulation

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

8. Solar Panel and Storage Battery Installation Work Available!

More customers are introducing solar power systems, which have substantial subsidies, in conjunction with renovations of used properties. Kakeru Koumuten Co., Ltd. also handles solar power 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 Samukawa Town | Frequently Asked Questions

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

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

10Features of Samukawa Town

Samukawa Town is known for the blessings of the Sagami River and the famous power spot, Samukawa Shrine. It is a flat and livable town. The JR Sagami Line runs through it, and it is close to Chigasaki and Ebina, making it a town where industry, agriculture, and residential areas coexist in balance.

With the post-war single-family housing area entering a generational transition, the choice of living on through used homes and renovations has taken root. Kakeru Koumuten is headquartered in Aoba-ku, Yokohama, and offers a wide range of exterior and interior renovations throughout Kanagawa Prefecture. We primarily handle exterior work such as roofs and walls with in-house construction.

Areas Available for Renovation

Kakeru Koumuten accepts requests throughout Kanagawa and Tokyo Prefectures.

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