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

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

I bought a used property, but I’m unsure if the renovation estimate provided 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 close to Hodogaya-ku, 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 Hodogaya-ku

Hodogaya-ku, Yokohama, has a rich history as a post town on the Tokaido, featuring a residential area characterized by the flatlands of Hoshikawa and Tennocho, as well as the hilly terrain of Gontazaka and Sakai-ki. It is also a key transportation hub with routes like the Hodogaya Bypass.

The old wooden houses spread across the valleys and hills are now at a generational transition point where seismic and insulation reviews are necessary. This is why the option of “buying a used detached house and renovating it to fit one’s lifestyle” is gaining popularity in Hodogaya-ku.

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 a growing interest in living by purchasing and renovating 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 less livable as they are. By renovating and upgrading the facilities and interiors, you can create a comfortable living environment. Additionally, by changing the layout and refreshing the interiors, 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 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 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 use and conditions, they may qualify for subsidies or tax incentives, leading to an increase in those 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 you can trust to handle your 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 Condition 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 occupied 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 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 work 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, 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 mortgage, and there are systems that allow for deductions on certain costs even with personal funds. These can sometimes be used together, 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 cost of renovating used properties and vacant houses varies significantly depending on the extent 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 typical 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 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 the rooftop 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 Hodogaya 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 for the latest information with our company or the respective offices 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 several subsidy programs targeting energy-saving renovations under the “Housing Energy Saving 2026 Campaign.” Insulation, windows, and water heater construction may be eligible for these combined subsidies.

Yokohama City Program

06Customer Voices

Exterior Renovation Case Studies in Hodogaya-ku

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. Rich experience in renovation work

Many renovation 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 project after hiring and provides peace of mind. If you have concerns, choose a contractor with ample 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 posts. In particular, Google reviews can be informative, but do not make your decision based solely on reviews; evaluate them comprehensively along with construction achievements, 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 separately, 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 three)

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

When comparing estimates, it is important to look 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” in detail. Lowering the rank of ancillary parts or skipping processes can reduce costs, so it is crucial to not judge solely based on price.
Click here for detailed points on comparing estimates

4. Confirm whether the company conducts renovations in-house

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

5. Do they offer 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 construction is completed, it is recommended to choose a company that can accommodate flexible simulations.

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

One reason is that “Kakeru Koumuten is also close to Hodogaya-ku,” but
we have initiatives in “renovating vacant and used properties that cannot be replicated by other companies”
which have received high praise from many customers.

1. Facilities Specialized in In-House Renovations

At Kakeru Koumuten Co., Ltd., we have organized warehouses and material storage to provide high-quality renovations at low cost. We have five bases located in Kanagawa and Tokyo, including Aoba-ku, Yokohama, and Machida City, Tokyo.

In-House Scaffolding Materials

We can construct temporary scaffolding, which is essential for exterior renovations, using our own scaffolding materials and in-house scaffolding team. By not outsourcing, this leads to cost savings on scaffolding work. We own scaffolding materials for approximately 50 detached houses.

Storage of Materials in Our Large 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.

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. 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 delivering high-quality renovations. A single representative handles everything from the estimate to project completion, ensuring smooth communication without changes in personnel for sales and 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 permits for the construction industry and for the collection and transportation of industrial waste. 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

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. If you cannot access the roof at height, we can respond with 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 only.

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 regularly conduct technical improvement training so that each staff member can respond to 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 suggest several patterns with our recommended color schemes. 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. Solar Panel and Battery Installation Work Available!

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 Hodogaya Ward｜Frequently Asked Questions

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

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

10Features of Hodogaya-ku

Hodogaya-ku in Yokohama has a history of flourishing as a post town on the Tokaido, featuring flatlands in Hoshikawa and Tennocho, as well as residential areas rich in valleys and slopes like Gontazaka and Sakai. It is also a transportation hub with routes like the Hodogaya Bypass.

As old wooden houses spread across valleys and slopes reach a generational transition, the choice of living on through used homes plus renovations has taken root. Kakeru Koumuten is headquartered in Aoba-ku, Yokohama, and serves Hodogaya-ku from our 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.

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