[Tokyo, Nerima Ward] Renovation of Vacant Houses and Used Properties | Cost Estimates, Subsidies, and Construction Achievements

For those considering renovation of used properties and vacant houses in Nerima-ku

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 in Nerima-ku, 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 Nerima-ku

Nerima-ku, Tokyo, is located in the northwest part of the 23 wards and is a comfortable town with many single-family residential areas and greenery/agricultural land. Large-scale housing complexes like Hikarigaoka and relatively new residential areas are popular among families.

Single-family homes and complexes developed during the Showa era are now entering a period of generational change, reaching 40 to 50 years old. This is why the option of “buying a used single-family home or complex and renovating (reforming) it to suit our lifestyle” is expanding in Nerima-ku.

02Reasons for Renovating Vacant Houses and Used Properties

In recent years, the housing market in Japan 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 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 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 as they are, but renovations can enhance their appearance and performance, increasing their value as properties.

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 lower than new constructions, and depending on the use and conditions, there may be cases where subsidies or tax incentives apply, 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 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 perform the work thoroughly according to your wishes, the structure of your home, 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 confirm which parts are deteriorated and to what extent beforehand. Since the property has been occupied by someone else, internal damage is often not apparent without investigation. Be sure to understand any hidden deterioration through a current condition survey before starting work.

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 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, 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 deductions on certain construction costs even with personal funds. These can sometimes be used in combination, so it is crucial 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 based on the degree of damage and the scope of work. First, please understand the approximate cost estimates 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 single 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 & 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.

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

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

* The following information is as of August 28, 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 each office for the latest information before applying. Kakeru Koumuten can assist with confirming the systems and providing necessary documents, but the applicant and application method may vary depending on the 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.

Tokyo Metropolitan Program

Nerima Ward Programs

06Customer Voices

Exterior Renovation Case Studies in Nerima-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 many may be unsure which one to choose. When requesting renovations, let’s check the following 5 points.

1. Rich 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 abundant 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 posts. In particular, Google reviews are useful, but don’t make your decision based solely on reviews; consider the work results, estimates, and warranty details for a comprehensive assessment.

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

When choosing 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 generally ranges from 1 to 10 years (emergency repairs and partial repairs are often not covered). Some contractors also offer after-sales services separately, 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 renovations, be sure to obtain estimates from multiple contractors. Even for the same work, warranties, after-sales services, and prices can vary significantly. Having multiple estimates makes price negotiations easier.

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

4. Confirm whether the company 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 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 self-construction, it is easier to coordinate with the site, allowing for quick responses in the event of any trouble.

5. Do they support 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 such as “it looks different from what I imagined.” Since it is difficult to redo once construction is completed, it is advisable to choose a company that can provide flexible simulations.

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

One reason is that “Kakeru Koumuten also serves Nerima-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

Kakeru Koumuten Co., Ltd. has established warehouses and material storage areas to provide high-quality renovations at low costs. We have five bases within Yokohama City for material storage and showrooms.

In-House Scaffolding Materials

For exterior renovations, temporary scaffolding is essential, and we can construct it using our own scaffolding materials and in-house scaffolding team. By not outsourcing, this leads to cost cuts on 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 also have various tools ready for different types of work, 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 together, we separate and recycle waste materials, significantly cutting waste 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 thermal insulation properties using a thermal insulation paint testing machine and color simulation. The showroom is a 3-minute walk from Eda Station in Aoba-ku, Yokohama. It is also accessible from within Tokyo.

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 keep costs down while providing high-quality renovations. Since a single representative handles everything from the estimate to project completion, there is no change in the person responsible for sales and construction management, allowing for smooth communication. All work, from temporary scaffolding installation to exterior wall painting and roof renovations, is carried out by our own craftsmen. 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 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 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. If you cannot access the roof at high places, we can respond using 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 from the exterior walls 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 conduct regular skill 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 propose 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 substantial subsidies in line with 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.

09Renovation of Used Properties and Vacant Houses in Nerima-ku | Frequently Asked Questions

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

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

10Features of Nerima-ku

Nerima-ku, Tokyo is located in the northwest part of the 23 wards, and it is a livable town with many single-family homes, greenery, and farmland. Large-scale housing complexes like Hikarigaoka and relatively new residential areas are also spread out, making it popular among families.

Single-family homes and complexes developed during the Showa era are now reaching a generational transition, and the choice of continuing to live in them through renovation and resale is becoming established. Kakeru Koumuten has its headquarters in Aoba-ku, Yokohama, and we widely accept exterior and interior renovations throughout Kanagawa and Tokyo Prefectures. We can perform all work in-house, including exterior wall overlay methods.

Areas We Serve for Renovations

Kakeru Koumuten accepts requests throughout Kanagawa and Tokyo Prefectures.

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