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

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

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 Manazuru 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 Manazuru Town

Manazuru Town is a port town known for its fishing and Hon Komatsuzaki, protruding into Sagami Bay. It is nationally famous for its town planning regulations based on the “Standard of Beauty,” preserving a beautiful living landscape surrounded by hills and the sea.

Old wooden houses in the sloped areas of the peninsula and around the port are at a stage where they require upgrades for seismic resistance, insulation, and protection against salt damage, making them attractive for relocation and dual residence. This is why the option of “buying a used detached house and renovating (or renovating) it to suit your lifestyle” is expanding in Manazuru Town.

02Reasons for Renovating Vacant Houses and Used Properties

In recent years, the Japanese housing market has expanded options not only for new builds 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 your home to suit 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 as they are, but renovations can enhance their appearance and performance, 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 for new builds, and depending on the use and conditions, they may also qualify for 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 choose 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 Deterioration of the Building

For used properties and vacant houses, it is crucial to confirm which parts have deteriorated 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, and part of the costs for earthquake retrofitting, energy-saving construction, and barrier-free renovations may be 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 is 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 renovation costs for used properties and vacant houses vary significantly based on the extent of damage and the scope of work. First, please understand the approximate market prices 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 Equipment

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 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 the construction menu and price list!

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

* The following information is as of September 8, 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 applicants and application methods differ 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 for insulation, windows, and water heaters may be eligible for these combined subsidies.

Manazuru Town Program

06Customer Voices

Exterior Renovation Case Studies Around Manazuru Town

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

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

1. They have extensive experience in renovation 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, providing peace of mind. If you have concerns, choose a contractor with extensive 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 a decision based solely on reviews; consider the construction achievements, 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 the presence 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 1 to 10 years is typical (emergency repairs and partial repairs are often not covered). Some contractors also offer after-sales services separate from 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, allowing for annual inspections.
Click here for more details on Kakeru Koumuten’s warranty and after-sales maintenance

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

When requesting remodeling, 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 only 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 parts or skipping processes can reduce costs, so it is 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 investigations regarding the existing “condition,” “location,” “materials,” “desired durability,” and “design,” and proposes 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 a swift 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 the construction is done, it is recommended to choose a company that can provide flexible simulations.

08Reasons why Kakeru Koumuten is chosen for remodeling used houses in Manazuru Town

One reason is that “Kakeru Koumuten also serves Manazuru Town,”
but there are also “initiatives in remodeling vacant and used properties that cannot be imitated by other companies,”
which have received high praise from many customers.

1. Equipment specialized for in-house remodeling

Kakeru Koumuten has organized warehouses and material storage areas to provide high-quality remodeling work at low cost. We have five bases located in Kanagawa Prefecture 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 cuts on 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 strives to reduce environmental impact and disposal costs by properly separating waste and recycling materials that can be repurposed.

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 resistance using a heat-resistant 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 aim to provide high-quality renovations at a lower cost. Since one representative handles everything from the estimate to project completion, communication is smooth without changes in sales or construction management. Our skilled craftsmen carry out the installation of temporary scaffolding, 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, ensuring confidence in our construction techniques. We are capable of handling large-scale painting projects for factories and apartment complexes.

4. Warranty and Aftercare Maintenance

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 have concerns about the warranty, please click on the image above to check.

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 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

We create various models for skill enhancement and conduct practical training. Since exterior renovations differ in construction methods and materials based on existing materials and shapes, we conduct regular technical 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 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 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 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 system installations and will propose solar panels that fit 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 Manazuru Town | Frequently Asked Questions

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

View Kakeru Koumuten’s project examples
View our service menu and price list

10Features of Manazuru Town

Manazuru Town is a port town known for its fishing and Hon Komatsu stone, located on the Manazuru Peninsula that juts out into Sagami Bay. It is nationally famous for its urban development ordinance called “Beauty Standards,” which protects the beautiful living scenery surrounded by hills and the sea.

As the old wooden houses around the slopes of the peninsula and the port reach a generational transition, there is a growing demand for earthquake resistance, insulation, and salt damage countermeasures through used properties and renovations. Kakeru Koumuten, headquartered in Aoba-ku, Yokohama, broadly accepts exterior and interior renovations throughout Kanagawa Prefecture. We are capable of in-house construction primarily focused on exterior work such as roofs and walls.

Areas Available for Renovation

Kakeru Koumuten accepts requests throughout Kanagawa and Tokyo Prefectures.

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