[Yokosuka City] Vacant House and Used Property Renovation | Costs, Subsidies, and Case Studies

For those considering renovations of used properties and vacant houses in Yokosuka 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.

For such concerns, Kakeru Koumuten Co., Ltd., which has numerous achievements in Yokosuka City, will clearly explain the key points for a successful renovation.

Get at least 3 estimates!

01Reasons for the Increase in Renovations of Used Properties and Vacant Houses in Yokosuka City

Yokosuka City is a major city in Kanagawa Prefecture, located in the center of the Miura Peninsula, known as a military port and tourist destination. The city features a varied terrain, from coastal urban areas to residential areas spreading across valleys.

Old wooden houses built on hillside slopes and in valleys are at a stage where they require improvements for seismic resistance, insulation, salt damage, and moisture control. This is why the option of “buying a used house and renovating it to suit your lifestyle” is expanding in Yokosuka 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 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 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 tend to be evaluated at a low asset value as they are, but renovations can improve their appearance and performance, thereby increasing the property’s value.

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 kept lower than new constructions, and depending on the use and conditions, they may also qualify for subsidies or tax incentives, leading to an increase in those utilizing vacant houses for business.

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. 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 your home, and the surrounding environment, and also provides aftercare following the construction.

Point 2 Always Check the Condition of the Building

For used properties and vacant houses, it is crucial to check which parts are deteriorating 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 understand 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 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. Check the condition of the building before starting work and be sure to check 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 renovations, and barrier-free modifications. Tax deductions include “housing loan tax deductions” when using a mortgage, and there are systems that allow for partial deductions for certain works even with personal funds. These can sometimes be combined, so it is essential to check in advance and use them strategically as a key to 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 greatly depending on the degree 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 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 Facilities

4. Equipment & Infrastructure

5. Waterproofing & Earthquake Resistance

6. Exterior Work

*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 the 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 Yokosuka 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 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 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 related to insulation, windows, and water heaters may be eligible for these subsidies.

Yokosuka City Program

06Customer Voices

Exterior Renovation Case Studies in Yokosuka City

07How to Choose a Renovation Contractor for Used Properties and Vacant Houses in Yokosuka City

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

1. Extensive Experience in Renovation Work

Many remodeling contractors publish their construction results 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 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 don’t make your decision based solely on reviews; consider the construction results, estimates, and warranty details for a comprehensive assessment.

2. Confirm the presence of warranties and after-sales maintenance

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 after-sales services separate from warranties, so be sure to check that as well.

Kakeru Koumuten Co., Ltd. provides warranties 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 warranties and after-sales maintenance

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, after-sales services, and costs can vary significantly. Having multiple estimates also makes price negotiations easier.

When comparing estimates, look at not just the costs, but also compare the “items in the estimate,” “undercoat materials, sealing materials, and paint for auxiliary parts,” and “confirmation of the process” in detail. Lowering the rank of auxiliary parts or skipping steps can reduce costs, so it is 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 optimal plan. While there is no inherent issue with the system of subcontractors performing the work, it is essential to confirm whether the contracted company understands the scope of work 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 swift responses in the event of any troubles.

5. Do you support color simulations and perspective drawings?

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 can be difficult to redo once the work is done, it is advisable to choose a company that can provide flexible simulations.

08Reasons why Kakeru Koumuten is chosen for remodeling used houses in Yokosuka City

One reason is that “Kakeru Koumuten also serves Yokosuka 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 established warehouses and material storage areas to provide remodeling work at low cost and high quality. We have five bases for material storage and showrooms located within Yokohama City.

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 sufficient 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 purchase 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 types of waste such as paint, wood, and metal are generated. While many contractors dispose of them all together, we separate and recycle waste, significantly cutting down on waste disposal costs.

Showroom dedicated to exterior renovations

In the 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 a heat-resistant paint testing machine and color simulation. 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 Co., Ltd. is our complete in-house construction. 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. All work, from temporary scaffolding installation 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 and Skilled Workers

We have obtained permits for the construction industry and for the collection and transportation of industrial waste. We also have nationally certified sheet metal and painting technicians 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 painting and joint sealing work come with a warranty. Aftercare is available annually, and we send out notification DM every year. If you are concerned 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 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 from the exterior walls only.

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 regularly conduct technical improvement 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 provide 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 suggest several patterns with our recommended color combinations. 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. We also handle solar panel and storage battery installation work!

More customers are introducing solar equipment with generous 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 Yokosuka City | Frequently Asked Questions

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

View Kakeru Koumuten’s construction examples
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10Features of Yokosuka City

Yokosuka City is located in the center of the Miura Peninsula and is known as a military port city and a tourist destination, making it one of the prominent cities in the prefecture. The city features a varied topography, from the coastal urban area to residential areas spreading into valleys.

As old wooden houses on hillside slopes and in valleys reach a generational transition, there is an increasing demand for earthquake resistance, insulation, and salt damage countermeasures for used homes and renovations. Kakeru Koumuten, headquartered in Aoba-ku, Yokohama, widely accepts exterior and interior renovations, including in-house construction for roof overlay methods.

Areas Available for Renovation

Kakeru Koumuten accepts requests primarily in Kanagawa Prefecture and Tokyo.

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