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

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

I bought a used property, but I’m unsure 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 also serves Zushi City, 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 Zushi City

Zushi City is a compact town blessed with sea and greenery, located at the base of the Miura Peninsula, featuring Zushi Beach and Hiroyama. It is a residential area with enduring popularity due to its calm living environment and good access to the city center.

In older wooden houses built on hilly slopes or along the coast, considerations for earthquake resistance, insulation, salt damage, and humidity are necessary depending on the age and location of the building. Therefore, when purchasing a used detached house in Zushi City, checking the condition of the building and considering renovations (rehabilitation) tailored to your lifestyle is also an option.

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 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, through changes in 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

There are cases where used properties are purchased and renovated for the purpose of resale. Depending on the condition of the building and demand, appropriate renovations can enhance its appearance and performance, leading to an increase in property valuation.

Reason 3 To Utilize as an Investment or Business

Another method is to purchase used properties for investment or business purposes and renovate them. By transforming them into stylish rentals or share houses, you can differentiate them from other properties, and depending on the location and business plan, there is potential for improved profitability. Depending on the use and conditions, there may also be subsidies or tax incentives available.

03Points to Note 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 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 check which parts have deteriorated and to what extent in advance. Since there have been other occupants, the internal damage is often not apparent without investigation. Conduct a current condition survey before starting work to understand any hidden deterioration.

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 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, 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, please refer to this subsidy section).

04 Cost Estimates for Renovating Vacant Houses and Used Properties

The renovation costs for used properties and vacant houses vary greatly depending on the extent of damage and the scope of work. First, please understand 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 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 Zushi City

*The following information is as of September 3, 2026. The details, duration, and budget of the systems change annually, and many will end once the budget limit is reached. Please check the official pages or contact points for the latest information before applying. Kakeru Koumuten can assist with confirming the systems and necessary documents, but the applicant 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 when used in combination.

Zushi City Program

06Customer Voices

Examples of Roof Overlay Construction in Zushi City

07How to Choose a Remodeling Contractor for Used Properties and Vacant Houses in Zushi City

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

1. They have extensive experience in remodeling work

Many remodeling contractors publish their project achievements on their websites. If a contractor provides detailed explanations of the process with photos, it can help you visualize the outcome after the request, giving you peace of mind. If you’re 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; consider project achievements, estimates, and warranty details for a comprehensive judgment.

2. Confirm the presence of warranties and aftercare services

When choosing a contractor, be sure to check for warranties. Repairs may be free within the warranty period. The duration varies by contractor and paint used, but typically ranges from 1 to 10 years (emergency repairs or partial repairs are often not covered). Some contractors also offer aftercare services, so be sure to check that as well.

Kakeru Koumuten Co., Ltd. provides warranties tailored to the scope of work and materials used. We also conduct aftercare services and send out annual DM notifications for consultations on inspections. The warranty period and coverage vary by project, so please confirm during the estimate.
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 construction work, warranties, after-sales service, 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 auxiliary paint,” and “confirmation of the process” should be carefully compared. Lowering the rank of auxiliary parts or skipping processes can reduce costs, so it is important to not judge solely based on price.
Learn more about points to compare estimates

4. Confirm whether the company performs renovations in-house

At Kakeru Koumuten Co., Ltd., we conduct detailed hearings and surveys 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 construction, it is important to confirm whether the contracted company understands the construction details and has clear responsibilities for quality control and warranties. If the construction is done in-house, it is easier to coordinate with the site, making it quicker to respond in case of any issues.

5. Check if they offer color simulations and perspective drawings

Whether for exterior or interior, deciding on the image and colors after construction can be challenging. With simulations, the risk of “it turned out differently than expected” can be reduced. Since it is difficult to redo once the construction is done, it is recommended to choose a company that can accommodate flexible simulations.

08Reasons why Kakeru Koumuten is chosen for renovations of used houses in Zushi City

One reason is that “Kakeru Koumuten also serves Zushi City,” but
there are “initiatives in the renovation of vacant houses and used properties that cannot be imitated by other companies,”
which have received high praise from many customers.

1. Equipment Specialized for In-House Renovations

Kakeru Koumuten Co., Ltd. has established warehouses and material storage areas to provide high-quality renovations at low costs. We have 5 bases located within Kanagawa Prefecture 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. By not outsourcing, we can achieve cost reductions on scaffolding work. We own scaffolding materials for approximately 50 detached houses.

Storage of Materials 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 we always have stock available, allowing us to 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. While many contractors dispose of them all together, our company significantly cuts waste disposal costs by sorting and recycling waste materials.

Exterior Renovation Dedicated Showroom

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 color simulation and heat-resistant paint testing equipment. The showroom is a 3-minute walk from Eda Station in Aoba-ku, Yokohama.

2. Complete In-house Construction

A major strength of Kakeru Koumuten is our complete in-house construction. By maintaining a consistent system from inquiry to project completion, we can provide high-quality renovations at reduced costs. A single representative handles everything from the estimate to the completion of the work, ensuring smooth communication without changes in sales or construction management. All work, from temporary scaffolding setup to exterior wall painting and roof renovations, is carried out by our own skilled craftsmen. We are confident in our plans and costs, so we welcome competitive estimates.

3. Various Permits Obtained & Skilled Workers on Staff

We have obtained licenses for the construction industry and for the collection and transportation of industrial waste. 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

For exterior wall painting and joint sealing work, we offer warranties tailored to the specifics of the project and the materials used. We send out annual notification DM and are available for aftercare consultations. Warranty periods and coverage vary by project, so please click the image above for details.

5. Flexible and Prompt Response

We are equipped to handle various exterior troubles and situations. Even if you cannot access the roof at height, we can respond using a drone. For leak investigations, we also use a thermal imaging camera. We respond according to our customers’ wishes and we also accept emergency measures for sudden leaks from exterior walls.

6. Human Resource Development

To enhance skills, we create various models and conduct practical training. Since exterior renovations differ in construction methods and materials based on existing materials and shapes, we conduct regular skill enhancement training to ensure each staff member can adapt 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 choose colors and designs for both exterior and interior renovations, ensuring satisfaction with their important buildings.

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 patterns with our recommended color schemes. We also accommodate “test painting” and “sample board arrangements” to confirm the actual color tones.

7-2. Interior Renovation Simulation

We also provide simulations and perspective drawings for interior renovations. Based on your preferred style, such as modern, we can suggest recommended simulations. We create realistic perspectives from actual floor plans.

8. Solar Panel and Battery Installation Work Available!

There are ways to introduce solar equipment in conjunction with renovations of used properties. Kakeru Koumuten Co., Ltd. also handles solar equipment installation and can 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 Zushi City | Frequently Asked Questions

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

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

10Features of Zushi City

Zushi City is a compact town blessed with sea and greenery, located at the base of the Miura Peninsula, featuring Zushi Beach and Hiroyama. It is a popular residential area due to its calm living environment and good access to the city center.

In hilly areas and along the coast with old wooden houses, renovations that consider seismic resistance, insulation, salt damage, and humidity are important. Kakeru Koumuten is headquartered in Aoba-ku, Yokohama, and we undertake exterior and interior renovations primarily in Kanagawa and Tokyo. We handle exterior renovations such as roofs and walls with in-house construction.

Areas We Can Serve for Renovations

Kakeru Koumuten accepts requests primarily in Kanagawa and Tokyo. The availability of services may vary depending on the region and type of work, so please contact us for more details.

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