目次
- 1 If you are looking for a large-scale repair contractor in Toshima-ku, Tokyo, come to Kakeru Koumuten
- 2 Reasons why Kakeru Koumuten is chosen for large-scale repairs in Toshima-ku, Tokyo
- 2.1 1. Equipment specialized for exterior renovations
- 2.2 2. Cost Reduction through In-House Management and Construction
- 2.3 3. Various Permits and Skilled Workers
- 2.4 4. Warranty and Aftercare
- 2.5 5. Flexible and Prompt Response
- 2.6 6. Human Resource Development
- 2.7 7. Consideration for Residents and Neighbors
- 2.8 8. Strict Quality Control
- 2.9 9. Exterior Wall Painting Color Simulation
- 3 Subsidies and Grants That May Be Applicable for Large-Scale Renovations in Toshima-ku, Tokyo
- 3.1 Condominium Longevity Promotion Tax System (Special Measures for Property Tax)
- 3.2 Tokyo Condominium Improvement Construction Subsidy System
- 3.3 FY 2028 Subsidy Project: Concentrated Promotion of Insulation and Renewable Energy in Rental Housing
- 3.4 FY 2028 Renovation Cost Subsidy System [Special Nursing Homes, etc.]
- 4 Examples of costs for large-scale repairs
- 5 Customer Feedback
- 6 Case Study of Exterior Renovation Work on a Mixed-Use Building
- 7 How to Choose a Large-Scale Renovation Contractor
- 8 If you are looking for a large-scale renovation contractor in Toshima-ku, Tokyo, please contact Kakeru Koumuten
If you are looking for
a large-scale repair contractor in
Toshima-ku, Tokyo, come to Kakeru Koumuten
Kakeru Koumuten is a company capable of complete in-house construction for
temporary scaffolding installation, roof work, waterproofing, and exterior painting.
We have handled numerous large-scale repairs and exterior renovations for
apartments, condominiums, and commercial facilities in Toshima-ku, Tokyo.
“Subsidies and costs available for large-scale repairs in Toshima-ku”
“How to choose a large-scale repair contractor in Toshima-ku”
“Reasons why Kakeru Koumuten is chosen in Toshima-ku”
These topics will definitely be helpful for owners and management associations
considering repairs or exterior renovations for their apartments and condominiums, so please take a look!
To conclude, the most important thing to consider when planning large-scale repairs is
“multiple estimates”!
Let’s obtain at least three estimates from large-scale repair companies that cover Toshima-ku!
Reasons why Kakeru Koumuten is chosen for large-scale repairs in Toshima-ku, Tokyo
One reason why we are entrusted with large-scale repairs in Toshima-ku is that
Kakeru Koumuten is based in Tokyo, but
“Our unique approach to large-scale repair work that cannot be imitated by other companies”
has received high praise from many customers.
“cost, quality, and plans” are our absolute strengths,
1. Equipment specialized for exterior renovations
At Kakeru Koumuten Co., Ltd., we have prepared the following warehouses and material storage areas to provide low-cost, high-quality exterior wall painting and waterproofing work for large-scale repairs.
We have established five bases centered around Yokohama City for material storage and showrooms.
In-house Scaffolding Materials
We own the scaffolding materials necessary for temporary scaffolding required for large-scale repairs, allowing us to assemble scaffolding in-house.
By conducting scaffolding work with our own scaffolding team instead of outsourcing, we can cut costs on scaffolding work and provide quick and flexible responses.
We have approximately enough scaffolding materials for 100 single-family homes!
Storage of Materials in Our Large Warehouse
We store paints and base repair materials used for exterior renovations.
By ordering a large quantity of materials at once, we can purchase materials at a lower cost!
Additionally, we always have stock available, enabling us to provide quick responses even in emergencies!
In-house Waste Separation
During large-scale renovations, various waste materials such as leftover paint, metal, and wood are generated.
Most contractors dispose of these materials together, but by sorting and recycling waste materials, significant cost reductions on waste disposal can be achieved.
Exterior Renovation Dedicated Showroom
In the showroom, not only can you have meetings, but you can also
check actual exterior material samples and colors.
You can also perform color simulations for exterior wall painting and verify heat insulation properties using a heat insulation testing machine!
2. Cost Reduction through In-House Management and Construction
One of Kakeru Koumuten’s major strengths is our in-house management and construction.
From inquiries to project completion, everything is managed by Kakeru Koumuten in a consistent system, allowing us to keep costs down while providing high-quality large-scale repairs.
Additionally, one representative will handle everything from the estimate to the completion of the work.
Since the same person will be in charge, whether it’s sales or construction management, smooth communication is possible.
We can handle everything from temporary scaffolding installation to exterior wall painting, substrate repair, waterproofing work, and tile repairs with complete in-house construction!
Qualified professionals with specialized knowledge and experience will conduct inspections and actual construction at each stage!
3. Various Permits and Skilled Workers
We have obtained construction industry permits and permits for industrial waste collection and transportation!
We also have nationally certified sheet metal workers and painting specialists on staff, giving us confidence in our construction techniques.
We can also handle large-scale roofing projects for factories and other facilities!
We have qualified asbestos supervisors and asbestos surveyors on staff, so we can handle asbestos-containing roofing materials and conduct preliminary surveys.
4. Warranty and Aftercare
Most large-scale repair works come with guarantees for almost all types of work, including “painting work,” “substrate repair work,” and “waterproofing work”!
Aftercare maintenance is available every year, and we send out notification DM each year.
5. Flexible and Prompt Response
Our company is equipped to handle various troubles and situations related to apartments and condominiums.
We can also address external walls and rooftops that cannot be checked from high places by utilizing drones!
During rain leak investigations, we can use a thermal imaging camera, which helps identify the cause of leaks!
We will respond according to your wishes.
We also accept emergency measures for sudden rain leaks!
In emergencies or urgent requests, we will respond promptly!
6. Human Resource Development
Our staff creates various models to improve their skills and conducts practical training.
Since different processing and techniques are required depending on the site, we regularly provide skill enhancement education to ensure that each staff member can respond appropriately.
We also educate on points to be careful about and areas to check during each stage of large-scale repair work.
7. Consideration for Residents and Neighbors
During large-scale repair work, we not only notify residents and visit neighbors to greet and explain the work, but we also install bulletin boards at entrances to display the work schedule and announcements!
Additionally, we ensure that the manners of visitors are thoroughly educated to minimize any inconvenience to residents and neighbors.
8. Strict Quality Control
Each stage of the work is inspected by a responsible person, and detailed construction photos are taken.
We use thickness measurement devices and check sheets during inspections to ensure that no inspections are missed.
During exterior painting and waterproofing work, we confirm the quantity of used paint cans to ensure that the specified amount of paint is used, and we prevent construction defects by ordering paint directly from our company.
Of course, we will also take photos of the used paint and report them back.
9. Exterior Wall Painting Color Simulation
9-1 Self Color Simulation
The simulations created by our company can be done using photos of your actual apartment or building!
You can also perform the simulation on your smartphone or computer.
By simulating and then applying two-tone colors or making a change in image, we hope to help enhance the stylish appearance and increase occupancy rates!
Of course, we can also arrange for paint samples to confirm the actual colors.
9-2 Confirm Actual Colors with Test Painting!
You can order samples of the paint you are considering and conduct test painting on your exterior wall.
By doing a test painting, you can confirm the actual color and sheen!
9-3 Exterior Renovation Simulation
Exterior simulations for apartments and condominiums are also possible!
・Exterior wall color simulation (two-tone colors are also possible)
・Simulation for when metal siding is applied
・Simulation using accent materials like cornices and louvers
・Simulation for roof painting and roof replacement work is also possible
With the exterior renovation simulation, the risk of failure in image change can be minimized!
We hope that by renovating the appearance of your apartment or condominium, it will help increase occupancy rates.
Subsidies and Grants That May Be Applicable for Large-Scale Renovations in Toshima-ku, Tokyo
In Toshima-ku, Tokyo, there are potential subsidies available when carrying out renovation work on apartments and condominiums!
For more details, please contact our company or your local government! (As of June 2026)
Condominium Longevity Promotion Tax System (Special Measures for Property Tax)
There is a system that reduces property tax when large-scale renovations are performed on condominiums.
◎ For more details, click here↓
Property tax is reduced when large-scale renovations are performed on condominiums! (PDF)
Is your condominium being regularly renovated? (PDF)
Tokyo Condominium Improvement Construction Subsidy System
The Tokyo Metropolitan Government promotes proper maintenance and management of condominium buildings by providing subsidies (interest subsidies) in collaboration with the Japan Housing Finance Agency for management associations that plan and carry out improvements and repairs, such as exterior wall painting of common areas, rooftop waterproofing, and barrier-free renovations.
Additionally, installation work for solar power generation equipment is also eligible for financing.
◎ For more details, click here↓
Subsidies for Renovations of Condominiums
Japan Housing Finance Agency
FY 2028 Subsidy Project: Concentrated Promotion of Insulation and Renewable Energy in Rental Housing
The Tokyo Metropolitan Government is promoting a project to provide concentrated support to rental housing owners who implement insulation renovations that contribute to tenant health, soundproofing, and crime prevention, as well as supporting expenses for introducing renewable energy through a combination of solar power generation and low-voltage bulk electricity procurement.
◎ For more details, click here↓
Announcement of the Start of the Concentrated Promotion Project for Insulation and Renewable Energy in Rental Housing
FY 2028 Concentrated Promotion Project for Insulation and Renewable Energy in Rental Housing
FY 2028 Renovation Cost Subsidy System [Special Nursing Homes, etc.]
The Tokyo Metropolitan Government provides support for renovations of elderly care facilities.
◎ For more details, click here↓
Explanation Video on Renovation Cost Subsidies for Special Nursing Homes, etc.
[Toshima-ku] Subsidy for Survey Costs of Planned Renovations for Condominiums
We provide partial subsidies for the costs of building diagnostics (deterioration diagnosis) conducted for the creation of long-term repair plans and large-scale repair work targeted at the management associations of condominium buildings located in Toshima-ku.
◎ For more details, click here↓
About the subsidy for condominium repair investigation costs
Toshima-ku condominium repair investigation cost subsidy guidelines (PDF)
Examples of costs for large-scale repairs
This will provide examples of costs for each repair work!
| Repair Method | Materials Used | Cost |
| Tile Replacement | Existing Similar Tiles | per piece/2,000 yen～4,000 yen |
| Repair of Floating Tiles and Mortar Areas | Epoxy Resin Injection | per square meter/3,000 yen～5,000 yen (Varies depending on the degree) |
| Tile Joint Mortar Repair | Mortar for Tile Joints | per square meter/1,000 yen～2,000 yen (Varies depending on the degree) |
| Concrete Spalling Repair | Reinforcement Rust Prevention Resin Mortar |
Per location/1,000 yen to 2,000 yen (Varies depending on the degree) |
| Crack Repair | Filler or Polymer Cement | m/100 yen to 2,500 yen (Varies depending on the degree) |
※Costs and warranty periods may vary depending on the shape, quantity, condition of the substrate, and type of materials.
If you would like a detailed estimate, please feel free to contact us!
Estimates are completely free of charge.
Customer Feedback
Case Study of Exterior Renovation Work on a Mixed-Use Building
| Construction Details |
| Partial replacement of damaged tiles Painting of auxiliary parts (pipes, water cut-off) Roof waterproofing work (urethane waterproofing) Exterior wall tile waterproofing (Seven S) Sealing work around sashes Repair of exterior wall tile mortar joints Removal of ivy |
| New Materials Used |
| Exterior wall tiles: Kunishiro tiles Painting of auxiliary parts: Radical silicone paint Roof waterproofing: High-strength urethane (Sarasene A) Exterior wall tile waterproofing: Seven S |
| Price Range |
| 4,000,000 – 4,100,000 yen |
| Construction Period |
| 45 days |
| Construction Process |
| Due to leaks occurring from several areas such as the exterior walls and rooftop, we proposed waterproofing for the entire exterior. The Seven S is a clear waterproofing material for tile exterior walls, and while it is somewhat expensive, its high waterproofing capability makes it a recommended choice when leaks are occurring from multiple areas of the exterior. |
How to Choose a Large-Scale Renovation Contractor
There are many large-scale renovation contractors that cover Toshima-ku, Tokyo, and it can be confusing to decide which contractor to choose.
Therefore, when requesting renovations for apartments, condominiums, and buildings, make sure to check the following four points:
● Extensive experience in large-scale renovations
● Check for warranties and aftercare services
● Obtain estimates from multiple contractors (at least three)
● Confirm whether they manage their own projects
By confirming the above four points, you will be able to choose a reliable contractor.
Extensive Experience in Large-Scale Renovations
Large-scale renovation contractors often have websites that showcase their exterior remodeling achievements.
Additionally, if they provide detailed explanations of repair work with photos, it offers reassurance as a reference when you actually request repairs.
If you are concerned about whether the contractor you are about to hire will respond adequately, choose one with extensive experience in large-scale renovations.
It can also be effective to look at skylight installation contractors based on reviews from Google and review sites!
If there are many negative reviews or no reviews at all, it may be wise to refrain from requesting their services.
Large-scale repair work involves not only the construction itself but also the potential for conflicts with residents and neighboring inhabitants. Therefore, it is necessary to prevent troubles in advance by reporting the progress of the work and sharing information about laundry, etc., on bulletin boards.
Kakeru Koumuten Co., Ltd. specializes in exterior construction, and we receive many requests for exterior renovations of apartments and condominiums.
Check for warranties and after-sales maintenance
When choosing a large-scale repair company, make sure to check for warranties.
If any issues such as leaks occur after the construction, having a leak warranty from the contractor ensures that repairs can be made free of charge, providing peace of mind!
Additionally, companies that offer warranty periods are often confident in their work, making this a key criterion for selecting a contractor!
Warranty periods vary by contractor and the nature of the work, but typically range from 1 to 10 years.
Emergency repairs or partial fixes often do not come with leak warranties.
Moreover, some contractors offer after-sales services in addition to warranties, so be sure to check if the contractor you are considering has warranties and after-sales services.
Kakeru Koumuten Co., Ltd. sends out annual direct mail for after-sales maintenance, allowing for yearly inspections.
We also provide free support for simple repairs such as partial sealing.
Obtain estimates from multiple contractors (at least 3 companies)
When requesting large-scale repairs, obtain estimates from multiple contractors.
It is important to get estimates from at least three companies and compare their reports and estimates!
Even for the same type of work, repair costs, warranties, and after-sales services can vary between contractors.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at the best possible price, obtaining estimates from multiple contractors is essential.
When comparing estimates, consider not only the cost but also
“the items in the estimate”
“the methods and materials for base repairs and exterior wall painting”
“confirmation of the process”
and make a detailed comparison! If the quality of the auxiliary materials is low or if steps are skipped, costs can be reduced, so avoid making decisions based solely on price!
Particularly for base repair work, which may not be obvious from the exterior, be sure to check whether the repair method is appropriate for the condition of the base!
Check if it’s managed in-house
Large-scale renovation work includes various tasks such as “substrate repair work,” “exterior wall painting,” “waterproofing work,” and “pipe replacement”!
The plan details may change depending on the actual deterioration condition and the customer’s wishes.
If a contractor completely outsources to subcontractors, they may lack knowledge and experience, leading to proposals for repairs in the wrong areas or unnecessary work.
This can result in additional time and costs as you need to investigate and then request subcontractors.
By having knowledge and experience and managing in-house, responsible construction can be carried out while keeping costs down.
Moreover, one of the disadvantages of contractors that outsource is that if any trouble occurs during construction, their response may be delayed.
It is safer to avoid having a company that has not actually met with the customer manage the construction.
Kakeru Koumuten Co., Ltd. handles everything from temporary scaffolding installation to exterior wall painting and waterproofing work in-house.
Knowledgeable and experienced personnel will manage the construction!
If you are looking for a large-scale renovation contractor in Toshima-ku, Tokyo, please contact Kakeru Koumuten
Our company has undertaken many exterior wall renovations for condominiums and apartments in Toshima-ku, Tokyo. We are happy to assist not only with large-scale renovation work but also with partial repairs and leak repairs.
In urgent cases such as leaks, we may also be able to provide emergency measures, so please feel free to consult us!
“I want it to last long with one renovation”, “I want to keep costs down as much as possible”, “I want to improve insulation performance because the room is hot”, we will provide the best solutions for your specific requests and future repair plans.
We carry out everything from temporary scaffolding work to roofing and exterior wall painting completely in-house.
We are confident that we will not be outdone in terms of cost, quality, and organization compared to other companies in exterior work!
We welcome competitive estimates because we are confident!
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
List of Areas in Toshima-ku, Tokyo
Toshima-ku, Ikebukuro / Toshima-ku, Ikebukuro Honcho / Toshima-ku, Kanamecho / Toshima-ku, Kamikebukuro / Toshima-ku, Kita-Otsuka / Toshima-ku, Komagome / Toshima-ku, Sugamo / Toshima-ku, Senkawa / Toshima-ku, Zoshigaya / Toshima-ku, Takada / Toshima-ku, Takamatsu / Toshima-ku, Chihaya / Toshima-ku, Nagasaki / Toshima-ku, Nishi-Ikebukuro / Toshima-ku, Nishi-Sugamo / Toshima-ku, Higashi-Ikebukuro / Toshima-ku, Minami-Ikebukuro / Toshima-ku, Minami-Otsuka / Toshima-ku, Minami-Nagasaki / Toshima-ku, Mejiro
・When should large-scale renovations be carried out? An explanation of the optimal timing and risks of postponement!
・Estimates are essential for large-scale renovations! Key points for comparison and important considerations!
・5 common troubles in large-scale renovations of condominiums! A thorough explanation of causes and prevention measures!
・What is waterproofing work in large-scale renovations? A thorough explanation of its role, signs of deterioration, and important considerations!
・Not enough funds for large-scale renovations… An explanation of how to deal with funding shortages and preparations you can do right now!
・What is the important surface repair in large-scale renovations? A thorough explanation of its necessity, signs of deterioration, and types of work!
・What is sealing work in large-scale renovations? An introduction to its role, methods, and tips for avoiding mistakes!
・What is the important tile repair in large-scale renovations? An explanation of signs of deterioration, types of work, and cost estimates!
・What is the important exterior wall painting in large-scale renovations? A thorough explanation of its necessity, signs of deterioration, and cost estimates!
・For exterior renovations in Toshima-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For roof renovations in Toshima-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・Leave your exterior wall painting in Toshima-ku, Tokyo to Kakeru Koumuten Co., Ltd.!
Consultations via LINE are also very welcome◎
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AAA is a young company with an average age in the early 20s, but our technology is second to none.
One of our greatest strengths is that we can do all of our own scaffolding, roofing, and painting work. In this industry, where work is generally divided, we are able to provide a complete set of services, which saves time and effort in management and reduces costs. Above all, if there is any trouble, we will come to you right away!
We can confidently declare this. We are the youngest and most friendly renovator in Kanagawa!
