Consultation for Renovation of Used Properties and Vacant Houses in Shibuya

For those considering renovations of used properties and vacant houses in Shibuya

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 these concerns, Kakeru Koumuten Co., Ltd., which also serves Shibuya-ku, will clearly explain the key points for a successful renovation.

Always obtain at least 3 estimates!

Kakeru Koumuten Renovation of Used Properties and Vacant Houses

01Reasons for the Increase in Renovations of Used Properties and Vacant Houses in Shibuya-ku

Shibuya-ku, Tokyo, is a sophisticated urban area that includes Shibuya, Ebisu, Yoyogi, and Sasazuka. From high-end residential areas like Shoto and Hiroo to residential neighborhoods in Sasazuka and Hatagaya, a diverse living environment is available.

The housing in Shibuya-ku has reached a time when seismic and thermal insulation improvements and equipment updates are necessary. This is why the option of “buying used detached houses or apartments and enhancing their quality through renovation” is expanding in Shibuya-ku.

A

Good Residential Areas in Ebisu and Shoto

Popular for its sophisticated living environment. There is an active movement to renovate and continue living in quality used detached houses and apartments.

B

Free Seismic Diagnosis

Shibuya-ku offers free seismic diagnosis conducted by district-appointed consultants. This includes wooden houses built to old seismic standards as well as certain wooden houses built to new seismic standards.

C

High Demand for Design-Oriented Renovations

This area has a strong emphasis on interior and exterior designs that match the atmosphere of the town. Many renovations benefit from color and design simulations.

D

Utilizing Tokyo’s Energy Efficiency Subsidies

Solar panels, storage batteries, and insulated windows can enhance the performance of used homes by utilizing various subsidy programs offered by Tokyo.

In this article, we summarize the reasons, points to consider, cost averages, the latest subsidies for 2026, and tips for choosing contractors from the perspective of Kakeru Koumuten Co., Ltd. for those considering renovations of used properties and vacant houses in Shibuya Ward to avoid “failures.”

The Most Important Thing is “Comparative Estimates”

To avoid failures in renovations, the most crucial step is comparative estimates. First, obtain estimates from at least three companies that operate in the Shibuya Ward area. 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

Reasons 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 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 roofs, 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 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 homes are often valued low as they are, but renovations can improve 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 properties into stylish rentals or share houses, you can differentiate them from others, and depending on the location and planning, you may also expect improved profitability. Initial costs can be lower than new construction, and depending on the purpose and conditions, there may also be subsidies and tax incentives available, leading to an increase in those utilizing vacant houses for business.

03Points to Consider When Renovating Vacant Houses and Used Properties

Points to Consider for Renovation

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 Condition 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, 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 homes built before then 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 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, and part of the costs for earthquake retrofitting, energy-saving renovations, and barrier-free modifications are supported. 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 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

Cost Estimates for Renovation

The renovation costs for used properties and vacant houses vary 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 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 & Painting Approximately 200,000 – 800,000 yen
Roof Replacement & Roof Overlay Method Approximately 700,000 – 2,500,000 yen
Exterior Wall Painting Approximately 600,000 – 1,500,000 yen
Exterior Wall Replacement & Overlay Method Approximately 1,500,000 – 3,000,000 yen

2. Interior (Interior Finishing)

Construction Content Estimated Cost
Floor Replacement (Approx. 6 tatami mats, Flooring, etc.) Approximately 100,000 – 300,000 yen
Wallpaper Replacement (Approx. 6 tatami mats) Approximately 50,000 – 150,000 yen
Ceiling Repair & Painting (Approx. 6 tatami mats) Approximately 30,000 – 100,000 yen
Renovation from Japanese Room to Western Room (1 room) Approximately 200,000 – 600,000 yen

3. Water Facilities

Construction Content Estimated Cost
Kitchen Replacement Approximately 450,000 – 1,500,000 yen
Bathroom Renovation (Unit Bath) Approximately 600,000 – 1,500,000 yen
Toilet Replacement Approximately 120,000 – 500,000 yen
Vanity Replacement Approximately 80,000 – 300,000 yen

4. Equipment & Infrastructure

Construction Content Estimated Cost
Water Heater Replacement Approximately 100,000 – 500,000 yen
Pipe Replacement (Aging Water Pipes, etc. – Partial Work) Approximately 100,000 – 500,000 yen
Electrical Wiring Work (Partial Work) Approximately 100,000 – 500,000 yen
Insulation Renovation (Replacement of Multiple Windows, Installation of Inner Windows, etc.) Approximately 200,000 – 1,000,000 yen

5. Waterproofing & 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 Maintenance (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 for 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!
Kakeru Koumuten's Construction Menu

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

Utilize subsidies and grants for cost-effective renovations

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 Shibuya Ward may be able to use.

*The following information is as of September 2, 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 applicant and application methods may vary by system.

National Program: Housing Energy Saving 2026 Campaign

The government is implementing several 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.

Mirai Eco Housing 2026 Project Insulation & Energy Saving Renovation
Up to 1,000,000 yen per unit

This is a successor program to the “Child-Rearing Green Housing Support Project.” As a general rule, it requires renovation work that includes insulation of the building structure (floor, walls, ceiling), and insulation renovation of openings (windows), eco-friendly housing equipment, child-rearing compatible renovations, disaster prevention improvements, and barrier-free renovations are also eligible.

Subsidy upper limit guidelines: For buildings constructed before 1991, up to 1,000,000 yen per unit (50,000 yen depending on the construction content); for buildings constructed 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, and applications are 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. For more details, please check the official page.

Advanced Window Renovation 2026 Project Windows & Insulation
Up to 1,000,000 yen per unit

This program covers insulation renovations for windows, including the installation of interior windows, replacement of exterior windows, and glass replacement. The subsidy amount is significant and effective for addressing cold, heat, and condensation issues. It can easily enhance the insulation performance of existing homes.

The subsidy amount varies depending 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 are accepted starting 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. For more details, please check the official page.

Water Heating Energy Saving 2026 Project High-Efficiency Water Heaters
Up to 170,000 yen per unit

This program targets the replacement of high-efficiency water heaters such as eco-cute, hybrid water heaters, and EneFarm. It is a suitable program for used properties planning to replace water heaters.

Subsidy amount guidelines: Eco-cute 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, and applications are accepted starting March 31, 2026 (early termination may occur if the budget limit is reached). For more details, please check the official page.

Tokyo Metropolitan Program

Tokyo Energy-Saving Renovation Promotion Project for Existing Homes Windows & Insulation
High Insulation Windows Up to 2,000,000 yen per unit (Insulation Material Up to 1,000,000 yen, etc.)

High insulation windows (installation of inner windows, replacement of outer windows, glass replacement), high insulation doors, insulation materials, and high insulation bathtubs are eligible. This program offers substantial subsidies that can significantly enhance the insulation performance of existing homes.

High insulation windows and doors have a subsidy limit of 2,000,000 yen per unit based on performance and size (security windows have a limit of 3,000,000 yen per unit), insulation materials are covered at 1/3 of eligible expenses with a limit of 1,000,000 yen, and high insulation bathtubs are 95,000 yen per unit. Pre-application starts on May 29, 2026, and application for grants is accepted from June 30, 2026. Individuals and corporations owning homes in Tokyo are eligible. The program is operated by Cool Net Tokyo. For more details, visit the official page.

Tokyo Zero Emission Points Energy-Saving Appliances
Points for Replacing Air Conditioners, Refrigerators, Water Heaters, and LEDs

This program offers points for replacing with energy-efficient air conditioners, refrigerators, water heaters, and LED lighting. It pairs well with equipment updates when moving into a used property.

Estimated points: Air conditioners 9,000 to 23,000 yen, refrigerators 14,000 to 26,000 yen, water heaters (such as eco-cute) 12,000 points, LEDs 4,000 yen, etc. Replacements are valid until March 31, 2027. Individuals residing in Tokyo are eligible. For more details, visit the official page.

Tokyo Household Battery Installation Promotion Project Solar Power & Batteries
Battery 100,000 yen/kWh (up to 1,200,000 yen) and more

This program supports the installation of battery systems in homes in Tokyo. It aims to expand self-consumption of electricity generated by solar power and improve energy independence during emergencies.

The battery package is priced at 100,000 yen per kWh, with a limit of 1,200,000 yen per unit if not participating in DR verification. The eligible expenses are capped, and there are requirements for eligible equipment. Applications for the 2026 fiscal year are currently being accepted for pre-application, grant application, and performance reporting. For more details, visit the official page.

Shibuya Ward Programs

Shibuya Ward Wooden House Earthquake Resistance Renovation and Demolition Cost Subsidy Earthquake Resistance
Earthquake Resistance Renovation 1/2; General Households Up to 1,500,000 yen (Elderly Housing Up to 2,000,000 yen)

Supporting seismic retrofitting for wooden houses in areas such as Ebisu, Yoyogi, and Sasazuka. Seismic diagnosis is free.

The diagnosis by a district-appointed seismic diagnosis consultant is free. Seismic renovation costs are covered at 1/2, with a maximum of 1.5 million yen for general households and 2 million yen for elderly residences. Demolition is also covered at 1/2 of the construction cost, with a maximum of 1.5 million yen. In addition to wooden houses built under the old seismic standards, two-story traditional wooden houses constructed between June 1, 1981, and May 31, 2000, may also be eligible for seismic renovation. The application deadline is generally December 25, 2026. For more details, please visit the official page of Shibuya Ward.

Shibuya Ward Ene-Farm Installation Subsidy + Proper Management Support for Vacant Houses Energy Saving / Vacant Houses
Ene-Farm maximum 300,000 yen / Demolition of vacant houses 50% / maximum 500,000 yen

There are subsidies for the installation of household fuel cells (Ene-Farm) and support for the management and demolition of vacant houses.

The Ene-Farm installation subsidy is 300,000 yen (from May 1, 2026, to March 15, 2027). The proper management support for vacant houses covers 50% of the eligible construction costs, with a maximum of 500,000 yen for the demolition of dilapidated houses and a maximum of 100,000 yen for other construction (applications are due by January 29, 2027). Please also check the Tokyo Metropolitan Government and national programs for solar power, storage batteries, and window insulation. For more details, please refer to Shibuya Ward’s Ene-Farm Installation Subsidy and Proper Management Support for Vacant Houses.

Home Renovation through Long-Term Care Insurance Barrier-Free
Maximum subsidy limit of 200,000 yen (maximum benefit of 180,000 yen)

This program is for those who have received certification for support or long-term care. Eligible renovations include handrails, eliminating steps, and replacing doors and toilets.

The maximum subsidy is 200,000 yen (generally 90% coverage). A pre-application is required before starting construction. Some items like handrails may also be eligible under the district’s “Simple Home Renovation Support Project.”

* The “Simple Home Renovation Support Project” in Shibuya Ward (20% subsidy, maximum 100,000 yen) requires construction by Shibuya Ward designated contractors, so work by Kakeru Koumuten Co., Ltd. is not eligible. For solar power and insulation renovations, please check both the Tokyo Metropolitan Government and national programs. Conditions such as pre-application, eligible products, and construction contractors vary by program, so please confirm before contracting or starting construction.

View information on renovation tax reductions and other programs
  • Housing Loan Tax Reduction: If you use a housing loan for renovations that meet certain requirements, income tax and other deductions will be based on the year-end balance.
  • Renovation Promotion Tax System (Investment-type Tax Reduction): For construction projects such as seismic reinforcement, energy conservation, barrier-free design, and long-term excellent housing, there may be cases where income tax deductions can be received even with personal funds.
  • Reduction of Property Tax: There is a system that reduces property tax for a certain period for seismic reinforcement, energy-saving renovations, and barrier-free renovations.
  • Tokyo’s Insulation and Energy Conservation Subsidy: The above “Tokyo’s System” (energy-saving renovation promotion project for existing homes, Tokyo Zero Emission Points, etc.) may be combined with the national “Housing Energy Conservation 2026 Campaign.” If you are considering construction for windows, insulation, or high-efficiency equipment, please consult us before starting work.

Subsidies and tax reductions can sometimes be combined, but there are restrictions on duplication for the same construction. Kakeru Koumuten will organize and propose “which system can be used for your construction” after conducting a site survey.

06Customer Voices

Roof Renovation Case Studies in Shibuya-ku

BEFORE

Shibuya Ward, Tokyo: tile roof before replacement

AFTER

Shibuya Ward, Tokyo: roof after replacement with Asahi Fiber Glass Ridgeway

Construction Location Shibuya-ku, Tokyo
Construction Details Roof Replacement Work
Existing Roofing Material Tiles
New Materials Used Asahi Fiberglass “Ridgeway” (Asphalt Shingle)
Price Range 600,000 – 700,000 yen
Completion Month September 2021

Our Proposal

We proposed to remove the existing tiles, check the condition of the roof substrate, install a new waterproof sheet, and replace it with lightweight asphalt shingle roofing material Asahi Fiberglass “Ridgeway”. Changing from tiles to lightweight roofing material contributes to the overall reduction of the roof’s weight. However, removing the tiles will change the insulation and soundproofing conditions, so it is important to check the insulation and ventilation in the attic as needed. The actual repair scope and auxiliary materials will be determined after confirming the existing substrate and roof shape.

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

There are many renovation companies that serve Shibuya, and it can be confusing to decide which one to choose. When requesting renovations, be sure to check the following 5 points.

  • Experience in renovation work
  • Check for warranties and after-sales maintenance
  • Obtain estimates from multiple contractors (at least 3 companies)
  • Confirm whether they perform renovations in-house
  • Check if they offer color simulations and perspective drawings

1. Experience in Renovation Work

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 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 do not make a decision based solely on reviews; evaluate them comprehensively along with the company’s track record, estimates, and warranty details.

2. Confirm whether there is a warranty and aftercare service

Warranty and Aftercare

When choosing a contractor, be sure to check for warranty availability. 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 the warranty, so be sure to check that as well.

Kakeru Koumuten Co., Ltd. provides a warranty for exterior renovations and sealing work. We also conduct aftercare services and send out annual notification DM, making annual inspections possible.
Click here for more details on Kakeru Koumuten’s warranty and aftercare services

3. Obtain estimates from multiple contractors (at least 3 companies)

Obtain estimates from multiple contractors

When requesting renovations, 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 is important to look at not just the costs, but also the “items in the estimate,” “check the undercoat materials, sealing materials, and auxiliary paint,” and “confirm the process.” Lowering the rank of auxiliary parts or skipping steps can reduce costs, so it is crucial to not make decisions based solely on price.
Click here for detailed points on comparing estimates

4. Confirm whether the work is done in-house

Confirm if done in-house

Kakeru Koumuten Co., Ltd. conducts detailed hearings and surveys on the existing “condition,” “location,” “materials,” “desired durability,” and “design” to propose the most suitable plan. While there is no inherent problem with the system where partner companies perform the construction, it is essential to confirm whether the contracted company understands the construction details and clearly defines the responsibilities for quality control and guarantees. If the construction is done in-house, it becomes easier to coordinate with the site, allowing for a quicker response in case of any troubles.

5. Do they support color simulations and perspective creation?

Color Simulation and Perspective

Choosing colors and envisioning the post-construction image can be challenging for both exterior and interior work. 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 recommended to choose a company that can provide flexible simulations.

08Reasons why Kakeru Koumuten is chosen for remodeling used houses in Shibuya-ku

Reasons to Choose Kakeru Koumuten

One reason is that “Kakeru Koumuten also serves Shibuya-ku,” but
“our unique approach to remodeling 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 remodeling in Shibuya-ku. Please compare our estimates with those from other companies.

The most important aspect of remodeling is getting multiple estimates. Request estimates from at least three remodeling contractors that cover Shibuya-ku!

1. Equipment specialized for in-house remodeling

Kakeru Koumuten has established warehouses and material storage to provide high-quality remodeling at low costs. We have five bases mainly in Aoba-ku, Yokohama, covering Kanagawa Prefecture and Tokyo.

In-house ownership of scaffolding materials

In-house scaffolding materialsIn-house scaffolding team
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 for approximately 50 detached houses.

Materials stored in our large in-house warehouse

In-house large warehouseMaterial storage
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-house waste separation
In exterior renovations, various types of waste such as paint, wood, and metal are generated. Our company is committed to separating waste by type for recycling, working towards proper disposal and cost reduction.

Showroom dedicated to exterior renovations

Exterior Renovation Dedicated ShowroomShowroom Interior
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 heat insulation properties using a heat 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

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 delivering 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 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 and Skilled Workers

Construction Industry LicensePresence of Skilled Workers
We have obtained construction industry licenses and permits for industrial waste collection and transportation. We also have nationally certified sheet metal 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

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

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 only.

6. Human Resource Development

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 training to ensure each staff member can handle various sites.
Click here for company overview

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

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 schemes. We also accommodate “test painting” and “arranging paint boards” to confirm the actual color tones.

7-2. Interior Renovation Simulation

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 based on actual floor plans.

8. Solar Panel and Storage Battery Installation Work Available!

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 Shibuya Ward | Frequently Asked Questions

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

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 cases where “unexpected construction costs arose” after purchase. By having Kakeru Koumuten check the condition of the property you are considering in advance and providing an estimate for necessary renovations, you can establish a feasible financial plan.

What renovations should be prioritized for a used house in Shibuya Ward?

It depends on the condition of the building, but we prioritize areas that, if left unattended, could lead to further damage, such as leaks, termites, and structural or seismic issues. After that, we decide on the order of exterior renovations such as roofs and walls, water areas (kitchen, bathroom, toilet), and insulation according to your budget and impact on daily life. In urban residential areas like Ebisu and Yoyogi, roofs and walls often reach the end of their lifespan first, so we recommend starting with a comprehensive inspection of the entire building, including the exterior.

I want to improve the performance of a used house in Shibuya Ward; what subsidies are available?

In Shibuya-ku, there is a free seismic diagnosis, and the cost for seismic retrofitting is half of the construction cost, with a maximum of 1.5 million yen for general households and 2 million yen for residences of the elderly and others. Insulation, windows, and solar power may be eligible for various programs from Tokyo and the national “Housing Energy Saving 2026 Campaign.” There is also a subsidy from the ward for Enefarm installation (300,000 yen). *Please note that the ward’s “Housing Simple Renovation Support Project” requires construction by a designated contractor in Shibuya-ku, so work by Kakeru Koumuten Co., Ltd. is not eligible.

How much does a full renovation (full remodel) 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 million yen, while large-scale renovations that include interior and exterior work, water areas, insulation, and seismic upgrades can exceed 10 million to 20 million yen. We will first assess the condition through an on-site survey and propose a plan prioritized according to your budget.

Do I need to apply for subsidies myself? Is the process difficult?

The applicant varies depending on the program. For example, the national “Mirai Eco Housing 2026 Project” requires registered contractors (construction companies) to apply. For seismic retrofitting and home renovations under nursing care insurance in your city or ward, 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 programs 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 will be revoked. Early inspection and necessary work according to your plan to live in, rent out, sell, or utilize the property can ultimately help reduce costs.

I am concerned 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 city or ward may also have 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. can 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 areas, we may recommend temporary housing. The estimated duration is about 2 to 4 weeks for exterior work and approximately 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 Shibuya-ku within your service area? Will there be travel expenses?

Yes, Shibuya-ku is within the service area of Kakeru Koumuten Co., Ltd. Our headquarters is located in Aoba-ku, Yokohama, and we operate from five bases across Kanagawa and Tokyo, centered around Aoba-ku, Yokohama. On-site surveys and estimates in Shibuya-ku are free. We will not engage in persistent sales tactics, so please feel free to consult with us first.

Leave your renovations in Shibuya-ku to Kakeru Koumuten!

“I want my renovation to last a long time with just one go,” “I want to keep costs down as much as possible,” “I want to improve insulation because my home is hot” — we will propose the best solutions for your specific requests. We do not suggest unnecessary work focused on profit.

We are confident in our costs, quality, and planning, so we welcome competitive estimates. Our estimates are completely free.

Get your free estimate and consultation here

If you find our company to be inferior to others, feel free to decline outright.

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10Features of Shibuya-ku

Shibuya-ku, Tokyo, is a sophisticated urban area that includes Shibuya, Ebisu, Yoyogi, and Sasazuka. From upscale residential areas like Shoto and Hiroo to residential neighborhoods like Sasazuka and Hatagaya, a diverse living environment spreads across the area.

In Shibuya-ku, reviewing the seismic and insulation standards of homes and updating facilities can lead to renovations that enhance the quality of purchased second-hand houses and apartments. Kakeru Koumuten is headquartered in Aoba-ku, Yokohama, and we broadly accept exterior and interior renovations throughout Kanagawa and Tokyo. We can perform all work in-house, including wall covering methods.

Areas We Serve for Renovations

Kakeru Koumuten accepts requests throughout Kanagawa and Tokyo.

Shibuya-ku, Tokyo Service Areas (Main Regions)

Shibuya / Jinnan / Udagawacho / Dogenzaka / Sakuragaokacho / Uguisudani / Ebisu / Ebisu Nishi / Ebisu Minami / Hiroo / Higashi / Nanpeidai-cho / Shoto / Kamiyama-cho / Tomigaya / Uehara / Moto Yoyogicho / Yoyogi / Sendagaya / Jingumae / Daikanyama-cho / Sarugakucho / Hachiyama-cho / Sasazuka / Hatagaya / Honmachi / Nishihara / Hatsudai / Oyama-cho and all of Shibuya-ku

Consultations via LINE are also very welcome◎

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For roof, gutter and exterior construction and repairs in Kanagawa,
contact Kakeru Koumuten Co., Ltd.

Kakeru Koumuten is a young company whose team is, on average, in their late twenties, but our skills are second to none.

Our greatest strength is that we handle scaffolding, roofing and painting entirely in-house. In an industry where these tasks are usually divided among contractors, our complete service simplifies project management and helps keep costs down. Above all, if a problem arises, we respond promptly.

We proudly describe ourselves as the youngest and most helpful renovation company in Kanagawa!