[Nishi-ku, Yokohama] Renovation of Vacant Houses and Used Properties | Costs, Subsidies, and Case Studies

1 Our Services

At Kakeru Koumuten Co., Ltd., we specialize in roofing, rain gutters, and exterior painting. Our experienced team is dedicated to providing high-quality services tailored to your needs.

Roofing Services

We offer a variety of roofing solutions, including roof overlay (cover method) to enhance the durability and aesthetics of your home.

Rain Gutter Installation

Proper rain gutter installation is crucial for protecting your property from water damage. Our team ensures that your rain gutters are installed correctly and efficiently.

Exterior Painting

Transform the look of your home with our professional exterior painting services. We use high-quality paints that withstand the elements and enhance your home’s curb appeal.

2 Why Choose Us?

With years of experience in the industry, Kakeru Koumuten Co., Ltd. is committed to delivering exceptional craftsmanship and customer service. We prioritize your satisfaction and work closely with you throughout the project.

Quality Materials

We use only the best materials to ensure the longevity and durability of our work. Your home deserves nothing less.

Skilled Professionals

Our team consists of skilled professionals who are experts in their respective fields. You can trust us to handle your project with care and precision.

Customer Satisfaction

Your satisfaction is our top priority. We strive to exceed your expectations and deliver results that you will love.

3 Contact Us

If you have any questions or would like to request a quote, please don’t hesitate to contact us. We look forward to working with you!

Phone: 012-345-6789

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For those considering renovations of used properties and vacant houses in Nishi Ward

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 close to Nishi Ward, 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 Nishi Ward

Nishi Ward in Yokohama is the central area of Yokohama, home to Minato Mirai and Yokohama Station, where urban functions are concentrated, while also featuring old residential areas on hills such as Tobe, Asama-cho, and Miyagaya. It is a town where the convenience of the city center coexists with quiet residential areas.

The old wooden houses in the residential areas on the hills are at a point where they need to be reviewed for earthquake resistance and insulation. This is why the option of “buying a used detached house or condominium and renovating (renovating) it to fit one’s lifestyle” is expanding in Nishi Ward.

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 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 as Your Own Home

The most common reason for purchasing and renovating a used property is “to live comfortably.” Older homes often have issues with roofs, exterior walls, and plumbing, 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 interiors, you can achieve a home that suits your family’s lifestyle while keeping costs lower than new construction.

Reason 2 To Increase Asset Value for Resale

There is an increasing number of people purchasing and renovating used properties for resale purposes. Used homes are often valued low in their current state, but renovations can enhance their appearance and performance, increasing their value as properties.

Reason 3 To Utilize as Investment or Business

For purchases intended for investment or business, 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 subsidies or tax incentives available, 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 that 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 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 check which parts have deteriorated and to what extent beforehand. Since there were previous residents, the internal damage is often not apparent without investigation. Be sure to understand any hidden deterioration through a current condition survey before starting construction.

Point 3 Review Earthquake Resistance and Insulation Performance

In the renovation of used and vacant houses, it is particularly important to review 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 construction and be sure to check the earthquake resistance and insulation performance.

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 housing loan, 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 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 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 of 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.

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

05[Latest 2026] Subsidies and Grants Available in Nishi Ward

* The following information is as of September 3, 2026. The content, 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 providing necessary documents, but the applicants and application methods 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.

Yokohama City Program

06Customer Voices

Exterior Renovation Case Studies in Nishi Ward

07How to Choose a Renovation Contractor for Used Properties and Vacant Houses in Aoba-ku

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

1. Experience in Renovation Work

Many renovation contractors publish their work results on their websites. If a contractor provides detailed explanations of the process with photos, it makes it easier to visualize the outcome after hiring them, which brings 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; assess the overall situation by considering work results, estimates, and warranty details.

2. Confirm the presence of warranties and aftercare services

When selecting 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 typically ranges from 1 to 10 years (emergency repairs and partial repairs are often not covered). Some contractors also offer aftercare services, so be sure to check for those as well.

Kakeru Koumuten Co., Ltd. provides warranties for exterior renovations and sealing work. We also conduct aftercare services and send out annual reminder DM, making annual inspections possible.
Click here for more details on Kakeru Koumuten’s warranties and aftercare services

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

When requesting renovations, be sure to obtain estimates from multiple contractors. Even for the same work, warranties, aftercare services, and costs can vary significantly. Having multiple estimates makes price negotiations easier.

When comparing estimates, consider not only the cost but also the “items in the estimate,” “verification of undercoating materials, sealing materials, and auxiliary paint,” and “confirmation of the process.” Lowering the rank of auxiliary parts or skipping steps can reduce costs, so it’s important to not judge solely based on price.
Click here to see detailed points for comparing estimates

4. Confirm whether the contractor performs renovations in-house

At Kakeru Koumuten Co., Ltd., we conduct detailed hearings and investigations regarding the existing “condition,” “location,” “materials,” “desired durability,” and “design” to propose the optimal plan. While there is nothing inherently wrong with a system where partner companies perform the construction, it is important to confirm whether the contracting company understands the construction details and clearly defines the responsibilities for quality control and guarantees. With self-construction, it is easier to coordinate with the site, allowing for a quicker response in case of any troubles.

5. Do they support color simulations and perspective creation?

Choosing colors and envisioning the post-construction appearance 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 advisable to choose a company that can accommodate flexible simulations.

08Reasons Why Kakeru Koumuten is Chosen for Renovations of Used Houses in Nishi-ku

One reason is that “Kakeru Koumuten is also close to Nishi-ku,” but
our unique approach to “renovating 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

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 Prefecture and Tokyo, including Aoba-ku, Yokohama, and Machida City, Tokyo.

In-House 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 savings on scaffolding work. We own enough scaffolding materials for approximately 50 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 is committed to separating and recycling waste materials, working towards reducing waste and minimizing 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 variety of catalogs. You can also confirm heat resistance using color simulation and heat-resistant paint testing equipment. The showroom is a 3-minute walk from Eda Station in Aoba-ku, Yokohama. It has good access from within Yokohama city.

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 providing 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 the work primarily 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 as well as 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 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 using a drone. For leak investigations, we also use a thermal imaging camera. 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 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 committed 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 combinations. 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. Based on your preferred image, such as a modern style, 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 equipment with substantial subsidies for renovations of used properties. Kakeru Koumuten Co., Ltd. also handles solar equipment installation and proposes solar panels tailored to the shape of your roof. We can also accept requests for estimates and power generation simulations only.

09 Renovation of Used Properties and Vacant Houses in Nishi Ward | Frequently Asked Questions

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

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

10Features of Nishi-ku

Nishi-ku, Yokohama, is the central district of Yokohama, home to Minato Mirai and Yokohama Station, where urban functions are concentrated, while also featuring traditional residential areas such as Tobe, Asama-cho, and Miyagaya on the hills. It is a town where the convenience of the city center coexists with quiet residential areas.

The old wooden houses in the hilly residential areas are reaching a generational transition, and the choice of continuing to live in them through renovation and resale has taken root. Kakeru Koumuten is headquartered in Aoba-ku, Yokohama, and serves Nishi-ku from its five bases in Kanagawa and Tokyo. We can handle exterior work such as roofs and walls with in-house construction.

Areas Available for Renovation

Kakeru Koumuten accepts requests throughout Kanagawa and Tokyo.

We welcome inquiries via LINE as well!

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