Renovation of Vacant Houses and Used Properties in [Yamato City] | Costs, Subsidies, and Case Studies

For those considering renovations of used properties and vacant houses in Yamato City

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.

Kakeru Koumuten Co., Ltd., with numerous achievements in Yamato City, 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 Yamato City

Yamato City is a highly accessible central city where three train lines intersect: Sotetsu, Odakyu, and Tokyu Den-en-toshi Line. The city features flat and livable urban areas centered around stations like Chuo-Rinkan, Yamato, and Minami-Rinkan.

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

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 a 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 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 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 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 are often valued low in their current state, but renovations can enhance their appearance and performance, thereby increasing their value as properties.

Reason 3 To Utilize as an 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 and tax incentives, leading to an increase in the number of people utilizing vacant houses for business.

03Points to Consider When Renovating Vacant or Used Properties

Point 1 Choose a Reliable Construction Company

First and foremost, it is essential to select a contractor you can trust to handle the renovation. Since used properties have had previous occupants, the internal structure and condition are often not clear until you actually see them. Choose a contractor who can carry out the work thoroughly according to your wishes, the structure of the house, and the surrounding environment, and who 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 the property has been lived in by someone else, many internal damages may not be apparent without investigation. Conduct a current condition survey before starting work to identify 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 homes built before that may not meet current standards. Additionally, in 2000, regulations regarding joints and foundations were strengthened, making older buildings more likely to lack earthquake resistance. Before starting work, check the condition of the building 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 housing loan, and there are systems that allow for partial deductions of costs for certain works even with personal funds. These can sometimes be used in combination, so it is essential to check in advance and plan strategically to utilize them effectively for a successful renovation (for the latest information, see this subsidy section).

04Cost Estimates for Renovating Vacant or Used Properties

The renovation costs for used properties and vacant houses vary significantly based on the degree of damage and the scope of work. First, please familiarize yourself with the approximate costs 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 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 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.

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

05[Latest 2026] Subsidies and Grants Available in Yamato City

*The following information is as of September 4, 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 necessary documents, but the application methods and applicants may 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.

Yamato City Program

06Customer Feedback

Roof Renovation Case Studies in Yamato City

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

There are many remodeling companies that serve Aoba-ku, Yokohama, and it can be confusing to decide which one to choose. When requesting a remodel, be sure to check the following five 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’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 achievements, estimates, and warranty details for a comprehensive judgment.

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, sending out annual notification DM to ensure annual inspections are 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 remodeling, be sure to obtain estimates from multiple contractors. Even for the same construction content, warranties, aftercare services, and prices can vary significantly. Having multiple estimates makes it easier to negotiate prices.

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

4. Confirm whether the contractor performs the remodeling in-house

At Kakeru Koumuten Co., Ltd., we conduct detailed hearings and surveys regarding the existing “condition,” “location,” “materials,” “desired durability,” and “design” to propose the most suitable plan. While there is nothing inherently wrong with the system where partner companies carry out the construction, it is important to confirm whether the contracted company understands the construction details and clearly defines the responsibilities for quality control and guarantees. If we handle the construction ourselves, it becomes easier to coordinate with the site, allowing for a quick response in case of any troubles.

5. Do you support color simulations and perspective drawings?

Choosing colors and envisioning the look after construction can be challenging for both exterior and interior projects. With simulations, you can reduce the risk of mistakes such as “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 Yamato City

One reason is that “Kakeru Koumuten also serves Yamato City,” but
“our unique approach to remodeling vacant and used properties that cannot be imitated by other companies”
has received high praise from many customers.

1. Equipment specialized for in-house remodeling

At Kakeru Koumuten, we have organized warehouses and material storage to provide remodeling work at low cost and 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 are also equipped with various tools that can handle different types of construction, such as 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 properly separate waste and recycle what is possible, thereby reducing 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 variety 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 Co., Ltd. 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 effectively. Since one representative handles everything from the estimate to project completion, there is no change in personnel for sales and construction management, allowing for smooth communication. We handle everything from temporary scaffolding setup to exterior wall painting and roof renovations primarily through in-house construction. 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 as well.

4. Warranty and Aftercare Maintenance

Exterior painting and joint sealing work come with a warranty. Aftercare maintenance is available every year, and we send out notification DM annually. If you have concerns about the warranty, please click on the image above for confirmation.

5. Flexible and Prompt Response

We are equipped to handle various exterior troubles and situations. Even if you cannot access the roof at high altitudes, 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 repairs for sudden leaks only.

6. Human Resource Development

We create various models to improve skills and conduct practical training. Since the construction methods and materials used for exterior renovations differ based on existing materials and shapes, we regularly conduct technical improvement training to ensure that 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 generate simulations from actual photos of your building and suggest several color patterns based on our recommendations. We also accommodate “test painting” and “arranging paint boards” to confirm 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. We also handle solar panel and storage battery installation work!

More customers are introducing solar equipment with substantial subsidies in line with renovations of used properties. Kakeru Koumuten Co., Ltd. also handles solar equipment installation 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 Yamato City | Frequently Asked Questions

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

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

10Features of Yamato City

Yamato City is a centrally located town with high transportation convenience, where three lines intersect: Sotetsu, Odakyu, and Tokyu Den-en-toshi Line. A flat and livable urban area spreads around stations such as Chuo-Rinkan, Yamato, and Minami-Rinkan.

As single-family residential areas from the Showa era reach a generational transition, the choice of buying used homes and renovating them has taken root. Kakeru Koumuten, headquartered in Aoba-ku, Yokohama, 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.

Renovation Service Areas

Kakeru Koumuten accepts requests throughout Kanagawa and Tokyo Prefectures.

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