[Ayase City] Renovation of Vacant Houses and Used Properties | Costs, Subsidies, and Case Studies
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Amount: ¥100,000
Available until March 2024
More Details
Additional information about the subsidy program.
Frequently Asked Questions
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For those considering renovations of used properties and vacant houses in Ayase 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.
For these concerns, Kakeru Koumuten Co., Ltd., which has numerous achievements in Ayase 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 Ayase City
Ayase City is a compact town where farmland, industrial areas, and residential areas coexist, spread across the Sagaminodai Plateau. Although there are no train stations within the city, the opening of the Ayase Smart IC on the Tomei Expressway has improved accessibility.
Residential areas developed during the Showa period are now entering a generational transition period, with many homes being around 40 to 50 years old. This is why the option of “buying a used house and renovating (or renovating) it to fit one’s lifestyle” is expanding in Ayase City.
Flat Residential Areas of the Sagaminodai Plateau
A calm town with little elevation change, where farmland and residences coexist. While scaffolding and construction are easier, updates to the exterior and water facilities are necessary due to the age of the buildings.
Improved Accessibility with Ayase Smart IC
An area gaining attention with the opening of the Ayase Smart IC on the Tomei Expressway. The trend of buying used properties and renovating them is on the rise.
Updating Showa Era Detached Houses
Houses developed during the Showa period are now around 40 to 50 years old. There is a strong demand to reassess insulation and seismic resistance to meet current standards in this area.
Be Aware of the “Boundary” of New Seismic Standards
The seismic resistance of used houses varies significantly depending on the construction period. It is crucial to determine whether the house was built before the standard revisions in 1981 and 2000.
This article summarizes the reasons, points to consider, cost estimates, the latest subsidies as of 2026, and how to choose contractors from the perspective of Kakeru Koumuten, aimed at helping those considering renovating used properties and vacant houses in Ayase City to avoid “failures.”
The Most Important Thing is “Comparative Estimates”
To avoid failures in renovations, the most crucial step is comparative estimates. Start by obtaining estimates from at least three companies that operate in Ayase City. Our company, Kakeru Koumuten Co., Ltd., also receives numerous consultations and requests for renovations of vacant houses and used properties.
02Reasons for Renovating Vacant Houses and Used Properties
In recent years, the Japanese housing market has expanded options not only for new builds but also for utilizing renovated 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 roofs, 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 tend to be valued low as they are, but renovations can enhance their appearance and performance, thereby increasing their value as properties.
Reason 3 To Utilize as Investment or Business
For purchases aimed at 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 construction, and depending on the purpose and conditions, they may even qualify for subsidies or tax incentives, leading to an increase in the number of people 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 who can perform the work thoroughly according to your wishes, the structure of your home, 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 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 construction.
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 construction and be sure to check earthquake resistance and insulation.
Point 4 Check Subsidy Programs and Renovation Tax Reductions
To keep construction costs down, it is important to check for subsidies and renovation tax reductions. 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 reductions include the “housing loan tax reduction” 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 conjunction, 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).
04 Cost Estimates for Renovating Vacant Houses and Used Properties
The renovation costs for used properties and vacant houses vary significantly depending on the degree of deterioration 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
| Construction Content | Estimated Cost |
|---|---|
| Roof Repair and Painting | Approximately 200,000 to 800,000 yen |
| Roof Replacement / Roof Overlay (Cover Method) | Approximately 700,000 to 2,500,000 yen |
| Exterior Wall Painting | Approximately 600,000 to 1,500,000 yen |
| Exterior Wall Replacement / Wall Overlay (Cover Method) | Approximately 1,500,000 to 3,000,000 yen |
2. Interior (Interior Finishing)
| Construction Content | Estimated Cost |
|---|---|
| Floor Replacement (Approx. 6 tatami mats, flooring, etc.) | Approximately 100,000 to 300,000 yen |
| Wallpaper Replacement (Approx. 6 tatami mats) | Approximately 50,000 to 150,000 yen |
| Ceiling Repair and Painting (Approx. 6 tatami mats) | Approximately 30,000 to 100,000 yen |
| Renovation from Japanese-style Room to Western-style Room (1 room) | Approximately 200,000 to 600,000 yen |
3. Water-related Equipment
| Construction Content | Estimated Cost |
|---|---|
| Kitchen Replacement | Approximately 450,000 to 1,500,000 yen |
| Bathroom Renovation (Unit Bath) | Approximately 600,000 to 1,500,000 yen |
| Toilet Replacement | Approximately 120,000 to 500,000 yen |
| Vanity Replacement | Approximately 80,000 to 300,000 yen |
4. Equipment and Infrastructure
| Construction Content | Estimated Cost |
|---|---|
| Water Heater Replacement | Approximately 100,000 to 500,000 yen |
| Pipe Replacement (Aging Water Pipes, etc. – Partial Work) | Approximately 100,000 to 500,000 yen |
| Electrical Wiring Work (Partial Work) | Approximately 100,000 to 500,000 yen |
| Insulation Renovation (Replacing Multiple Windows, Installing Inner Windows, etc.) | Approximately 200,000 to 1,000,000 yen |
5. Waterproofing and Earthquake Resistance
| Construction Content | Estimated Cost |
|---|---|
| Balcony Waterproofing Work | Approximately 100,000 to 400,000 yen |
| Seismic Reinforcement Work | Approximately 500,000 to 2,000,000 yen |
6. Exterior Works
| Construction Content | Estimated Cost |
|---|---|
| Entrance Door Replacement | Approximately 200,000 to 500,000 yen |
| Gate and Fence Renovation | Approximately 200,000 to 800,000 yen |
| Parking Lot Development (for 1 car, including concrete pouring, etc.) | Approximately 200,000 to 600,000 yen |
*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 Ayase City
One way to renovate used properties and vacant houses cost-effectively is to utilize the subsidy and grant system. As of 2026, we have summarized the main systems that residents of Ayase City may be able to use.
*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 each contact point before applying. Kakeru Koumuten can assist with confirming the systems and providing necessary documents, but the applicant and application method may differ 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 for insulation, windows, and water heaters may be eligible for these subsidies.
This program is a successor to the “Child-Rearing Green Housing Support Project.” In principle, it requires renovation work that includes insulation improvements for openings (windows) and the building structure, targeting eco-friendly housing equipment, child-rearing compatible renovations, disaster prevention improvements, and barrier-free renovations.
Subsidy upper limit guidelines: For houses built before 1991, up to 1 million yen per unit (50,000 yen depending on the construction content); for houses built between 1992 and 2016, up to 800,000 yen per unit (400,000 yen for the same). Eligible construction must start after November 28, 2025, with applications accepted starting June 30, 2026. Reservations must be made by November 16 at the latest, and grant applications must be submitted by December 31 at the latest (early termination may occur if the budget limit is reached). Applications must be made through registered contractors.
This program targets insulation renovations for windows, including the installation of interior windows, replacement of exterior windows, and glass replacements. The subsidy amount is substantial and effective for addressing cold, heat, and condensation issues. It can easily enhance the insulation performance of existing homes.
The subsidy amount varies based on the window construction method, performance, size, and the type of house. If the total subsidy amount for one application is less than 50,000 yen, it is not eligible. Applications have been accepted since March 31, 2026, and grant applications must be submitted by December 31 at the latest (early termination may occur if the budget limit is reached). Applications must be made through registered contractors.
This program targets the replacement of water heaters with high-efficiency models such as EcoCute, hybrid water heaters, and EneFarm. It is well-suited for existing properties planning to replace their water heaters.
Subsidy amount guidelines: EcoCute 70,000 to 100,000 yen per unit, hybrid water heaters 100,000 to 120,000 yen per unit, EneFarm 170,000 yen per unit. Eligible construction must start after November 28, 2025, with applications accepted starting March 31, 2026 (early termination may occur if the budget limit is reached).
Ayase City Program
This is a key program supporting the seismic reinforcement of wooden detached houses. It is effective for seismic renovations combined with the purchase of existing detached houses. There is no explicit restriction on the contractors for the renovation work being limited to those within the city (diagnosis and design must be done by architects from the city’s registered list).
The target is wooden houses that received building confirmation before May 31, 2000. Earthquake resistance renovation 2/3, maximum 1 million yen; earthquake diagnosis 2/3, maximum 40,000 yen; demolition 2/3, maximum 300,000 yen. Diagnosis and design are conducted by architects listed in the city’s registry. The application status for fiscal year 2028 needs to be confirmed. For details, please visit the official page of Ayase City.
This is a city program for those looking to install solar power and storage batteries in conjunction with the renovation of used properties. There are no restrictions on contractors being located within the city.
Solar power 10,000 yen/kW, maximum 30,000 yen (with surplus purchase as a condition), storage batteries 50,000 yen, EneFarm 50,000 yen, V2H 50,000 yen, ZEH addition 100,000 yen. Insulation and windows are not eligible. Applications for fiscal year 2028 will be accepted from April 1 to March 15, 2029 (first-come, first-served, until budget is exhausted). For details, please visit the official page of Ayase City.
This is for individuals who have received certification for support or long-term care. Eligible works include the installation of handrails, elimination of steps, changes to flooring materials, and replacement of doors and toilets.
Home renovations under long-term care insurance have a subsidy limit of 200,000 yen (generally 90% coverage). Pre-consultation and application before construction are required. Currently, there is no confirmation of Ayase City’s unique barrier-free renovation subsidy (there is a reduction in fixed property tax for barrier-free renovations).
This program requires that the construction be performed by contractors located within the city, so our company, located in Aoba-ku, Yokohama, is generally not eligible. This is just to inform you.
Block walls over approximately 60 cm in height that are lowered to about 40 cm or less, etc., and those facing roads are eligible (100% subsidy rate for school routes, etc.). Since local contractors are a requirement, our company’s construction, being from outside the city, is generally not eligible. The application status for fiscal year 2028 needs to be confirmed. For details, please visit the official page of Ayase City.
* The block wall subsidy in Ayase City is only available for contractors within the city, so our company (Aoba-ku, Yokohama) cannot utilize it in principle. On the other hand, seismic retrofitting (construction) and renewable energy energy-saving equipment can likely be utilized even by contractors outside the city. Insulation and windows are not eligible for city subsidies, so it is basic to utilize the national “Housing Energy Saving 2026 Campaign” + Kanagawa Prefecture’s existing housing energy-saving renovation subsidy. There are no unique city subsidies for general renovations or vacant house renovations.
View information on renovation tax reductions and other systems
- Housing Loan Tax Reduction: If you use a housing loan for renovations that meet certain requirements, income tax and other deductions will be applied based on the year-end balance.
- Renovation Promotion Tax System (Investment-type Tax Reduction): For construction such as seismic, energy-saving, barrier-free, and long-term excellent housing, there may be cases where income tax deductions can be received even with personal funds.
- Reduction of Fixed Asset Tax: There is a system that reduces fixed asset tax for a certain period for seismic retrofitting, energy-saving renovations, barrier-free renovations, etc.
- Kanagawa Prefecture’s Existing Housing Energy-Saving Renovation Subsidy: For the fiscal year 2026, the subsidy rate is 1/3, with a maximum of 150,000 yen. The first phase has ended, but additional applications are scheduled to be accepted from September 7 to September 30, 2026, only electronically and on a first-come, first-served basis (approximately 25 cases). Applications must be made by the applicant themselves, and construction before the grant decision is not eligible. Please check the official page of Kanagawa Prefecture.
While subsidies and tax reductions can sometimes be combined, there are restrictions on duplication for the same construction. Kakeru Koumuten will organize and propose “which systems can be used for your construction” after conducting a site survey.
06Customer Voices
カテゴリ ‘voice’ は見つかりません
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customer reviews
Asao-ku, Kawasaki City | We received reviews about the ridge cap and rain gutter replacement work!
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customer reviews
Kohoku-ku, Yokohama | We received reviews about the roof overlay (cover method)!
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customer reviews
Kohoku-ku, Yokohama | We Received Reviews About Exterior Painting!
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customer reviews
Aoba-ku, Yokohama | We received reviews about our exterior fence construction!
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customer reviews
Tsurumi-ku, Yokohama | We received reviews about roof and exterior wall painting, as well as metalwork and rain gutter replacement work!
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customer reviews
Higashiyamato City, Tokyo | We received reviews about exterior painting and roof overlay (cover method)!
Exterior Renovation Case Studies in Ayase City
| Construction Location | Ayase City, Kanagawa Prefecture |
|---|---|
| Construction Details | Roof Overlay Construction |
| Existing Roofing Material | Slate (Colonial NEO) |
| New Materials Used | Roofing Material: Aijii Industry / Super Galtect |
| Price Range | 700,000 yen – 800,000 yen |
| Completion Month | March 2024 |
Our Proposal
The existing roofing material was Colonial NEO, which tends to crack and chip over time, making maintenance through painting difficult. Therefore, we proposed a roof overlay construction method that allows for the installation of new roofing material without removing the existing roof. The new roofing material used is Super Galtect from Aijii Industry, known for its lightweight, excellent insulation, and durability.
You can also consult us about roof repair and renovation or waterproofing work in Ayase City.
07How to Choose a Renovation Contractor for Used Properties and Vacant Houses in Ayase City
There are many renovation companies that serve Ayase City, and it can be confusing to decide which one to choose. When requesting renovations, let’s check the following five points.
- Have extensive experience in renovation work
- Check for warranties and after-sales maintenance
- Obtain estimates from multiple contractors (at least three)
- Confirm whether they perform renovations in-house
- Check if they offer color simulations and perspective drawings
1. Have extensive experience in renovation work
Many remodeling 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 what to expect after hiring them, which brings peace of mind. For those who are uncertain, it’s advisable to choose a contractor with extensive experience.
Google and review sites can also be helpful references. It’s important to check the content of low ratings, the company’s responses, and the timing of the posts. In particular, Google reviews can be informative, but don’t make your decision based solely on reviews; evaluate the overall picture by considering work results, 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 separate from warranties, 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 and send out annual reminder DM, making annual inspections 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 work, warranties, aftercare services, and costs can vary significantly. Having multiple estimates makes price negotiations easier.
When comparing estimates, it’s important to look at not just the costs 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 steps can reduce costs, so it’s crucial to not judge solely based on price.
Click here for detailed points on comparing estimates
4. Confirm whether the contractor performs the work 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 problem with the system where partner companies carry out the construction, it is essential to confirm whether the contracted 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 quick responses in case of any troubles.
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 like “it turned out differently than I imagined.” Since it is difficult to redo once the construction is done, it is advisable to choose a company that can provide flexible simulations.
08Reasons why Kakeru Koumuten is chosen for renovations of used houses in Ayase City
One reason is that “Kakeru Koumuten also serves Ayase City,” but
“our unique approach to renovating vacant and used properties that cannot be imitated by other companies”
has received high praise from many customers.
We have absolute confidence in “cost,” “quality,” and “plans” for renovations in Ayase City. Please compare our estimates with those of other companies.
The most important aspect of renovations is getting multiple estimates. Be sure to request estimates from at least three renovation contractors that cover Ayase City!
1. Equipment specialized for in-house renovations
Kakeru Koumuten has established warehouses and material storage areas to provide high-quality renovations at low costs. We have five bases for material storage and showrooms located within Yokohama City.
In-house 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 savings 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 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 separates and recycles waste materials, significantly reducing 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 its 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 one 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 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 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
Exterior painting and joint sealing work come with a warranty. Aftercare is available every year, and we send out notification DM annually. 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. If you cannot access the roof at high altitudes, 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 improvement and conduct practical training. Since exterior renovations differ in construction methods and materials based on existing materials and shapes, we regularly implement technical improvement education 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 Co., Ltd. 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 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 image, such as a modern style, we will suggest 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 Ayase City | Frequently Asked Questions
We will answer the most frequently asked questions from those considering renovations of used properties and vacant houses in Ayase City.
Is it better to renovate after buying a used property or consult before purchasing?
If possible, please consult us before making a purchase decision. Used properties often have deterioration that is not visible, and it is not uncommon to encounter unexpected construction costs after purchase. By having Kakeru Koumuten Co., Ltd. check the condition of the property you are considering in advance and provide an estimate of necessary renovations, you can establish a feasible financial plan.
What renovations should be prioritized for a used house in Ayase City?
It depends on the condition of the building, but we prioritize areas that, if neglected, can lead to further damage, such as leaks, termites, structure, and seismic resistance. After that, we will decide on the order of exterior work such as roofs and walls, water areas (kitchen, bathroom, toilet), and insulation according to your budget and impact on daily life. In residential areas of the flat agricultural and industrial town of the Sagaminodai Plateau, roofs and walls often reach the end of their lifespan first, so we recommend starting with a comprehensive inspection of the building, including the exterior.
I bought a used house in Ayase City. Can I use subsidies?
Ayase City has many flat residential areas on the Sagamino Plateau, making it an easy area for construction. Subsidies for seismic retrofitting of wooden houses (2/3 of the cost, up to 1,000,000 yen) and subsidies for renewable energy and energy-saving equipment (solar power, storage batteries, ZEH) are expected to be available even for our company outside the city. We will first propose inspections for exterior, water-related areas, seismic resistance, and insulation. Please note that subsidies for dangerous block walls are generally not applicable for our company as the condition is that the work must be done by contractors within the city (we will provide honest guidance).
How much does a full renovation (full remodeling) cost?
The cost of a full renovation for a detached house varies greatly depending on the scope and grade. If focusing on partial renovations, it typically starts from around 5,000,000 yen, while large-scale renovations that include interior and exterior work, water-related areas, insulation, and seismic upgrades can exceed 10,000,000 to 20,000,000 yen. We will first conduct a site survey to assess the condition and propose a prioritized plan that fits your budget.
Do I need to apply for subsidies myself? Is the process difficult?
The applicant varies depending on the system. For example, the national “Mirai Eco Housing 2026 Project” is structured so that registered contractors (construction companies) apply. For seismic retrofitting or home modifications under long-term care insurance in your municipality, the application is generally made by the individual, but we will guide you through the necessary documents and process. We will organize and inform you about “which systems are available,” so please feel free to consult with us first.
What risks are there if I leave a vacant house unattended?
Risks include the progression of leaks and termite damage, depreciation of asset value due to deterioration of exterior walls and roofs, and neglect of garden trees and equipment. Additionally, if you receive a recommendation from the municipality as a “poorly managed vacant house” or “designated vacant house,” there is a possibility that the special exemption for residential land from fixed asset tax may be revoked. Conducting inspections early and carrying out necessary work according to your plans to live in, rent, sell, or utilize the property can ultimately help reduce costs.
I am worried about seismic resistance. How can I assess the seismic safety of a used detached house?
The construction period is a significant indicator. Check if it was built after June 1981 (new seismic standards), and further if it was built after June 2000 (strengthening of joint and foundation regulations). For wooden detached houses built before that, we recommend a seismic diagnosis. Your municipality also offers subsidies for seismic retrofitting of wooden houses, which can significantly reduce costs if eligible (for details, see the subsidy section above). Kakeru Koumuten Co., Ltd. will assist you from diagnosis to renovation.
Will I need temporary housing during construction? How long will it take?
This depends on the scope of the work. Exterior renovations and partial interior work can often be done while you remain in your home, but for large-scale full renovations that include water-related areas, we may recommend temporary housing. The estimated duration is about 2 to 4 weeks for exterior work and about 1 to 3 months or more for full renovations. We will provide a schedule in advance and propose a plan that minimizes the impact on your daily life.
Is Ayase City within your service area? Will there be travel costs?
Yes, Ayase City is within the service area of Kakeru Koumuten Co., Ltd. Our headquarters is located in Aoba-ku, Yokohama, and we primarily serve five locations in Kanagawa and Tokyo. Estimates are completely free, and we do not engage in aggressive sales tactics. Please feel free to consult with us.
Leave your renovations in Ayase City to Kakeru Koumuten!
“I want my renovation to last a long time with just one project,” “I want to keep costs as low as possible,” “I want to improve insulation because my room is hot”—we will propose the best solutions for your specific requests. We will not suggest any unnecessary work that prioritizes profit.
We are confident in our costs, quality, and planning, so we welcome competitive estimates. Estimates are completely free.
Get your free estimate or consultation here
If you find our company to be inferior to others, feel free to decline without hesitation.
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10Features of Ayase City
Ayase City is a compact town where agricultural land, industrial parks, and residential areas coexist, spread across the Sagamino Plateau. Although there are no train stations within the city, the opening of the Ayase Smart IC on the Tomei Expressway has improved convenience.
As single-family residential areas from the Showa era reach a generational transition, the choice of living in used homes plus renovations is becoming established. Kakeru Koumuten, headquartered in Aoba-ku, Yokohama, offers a wide range of exterior and interior renovations primarily in Kanagawa and Tokyo. We can handle everything from exterior wall overlay methods with in-house construction.
Renovation Service Areas
Kakeru Koumuten accepts requests primarily in Kanagawa and Tokyo.
Main Areas of Service in Ayase City
Fukaya / Fukaya Naka / Fukaya Minami / Fukaya Kami / Ayase Nishi / Kozono / Terao / Terao Kita / Terao Naka / Terao Minami / Terao Dai / Hayakawa / Hayakawa Shiroyama / Yoshioka / Yoshioka Higashi / Kamitodana / Kamitodana Naka / Kamitodana Minami / Kamitodana Kita / Ochiai / Ochiai Kita / Ochiai Minami / Oogami / Tatekawa / Mototatekawa and other areas throughout Ayase City
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株式会社翔工務店へ
株式会社翔工務店は平均年齢２０代後半の若い会社ですが、技術はどこにも負けていません。
いちばんの強みは、足場工事、屋根工事、塗装工事とすべて自社で行えること。一般には分業されるこの業界にあって、一式で頼めるので管理に手間がかからず、コストも抑えることが出来ます。何より、トラブルがあればすぐにかけつけます！
自信をもって、宣言できます。私たちは、神奈川で一番若くて親切なリフォーム屋です！
