目次
- 1 If you are looking for large-scale repair contractors in Minato-ku, Tokyo, come to Kakeru Koumuten
- 2 Reasons why Kakeru Koumuten is chosen for large-scale repairs in Minato-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 Minato-ku, Tokyo
- 3.1 Condominium Longevity Promotion Tax System (Special Measures for Fixed Asset Tax)
- 3.2 Tokyo Metropolitan Condominium Improvement Grant System
- 3.3 FY 2028 Grant Project: 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 Renovations
- 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 Minato-ku, Tokyo, please contact Kakeru Koumuten
If you are looking for
large-scale repair contractors in
Minato-ku, Tokyo, come to Kakeru Koumuten
Kakeru Koumuten is a company that can handle everything from temporary scaffolding installation to roof work, waterproofing, and exterior painting
with complete in-house construction capabilities. We have undertaken numerous large-scale repairs and exterior renovations for apartments, condominiums, and commercial facilities in Minato-ku, Tokyo.
“Subsidies and costs available for large-scale repairs in Minato-ku”
“How to choose a large-scale repair contractor in Minato-ku”
“Reasons why Kakeru Koumuten is chosen in Minato-ku”
These topics will definitely be useful 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 when considering large-scale repairs is
“multiple estimates”!
For large-scale repair companies covering Minato-ku, let’s get
at least 3 estimates!
Reasons why Kakeru Koumuten is chosen for large-scale repairs in Minato-ku, Tokyo
One reason why we can be entrusted with large-scale repairs in Minato-ku is that
“the fact that Kakeru Koumuten is based in Tokyo” is one reason, but
“our unique approach to large-scale repair work that cannot be imitated by other companies”
has received high praise from many customers.
“costs,” “quality,” and “plans” for exterior renovations of apartments, condominiums, and commercial facilities in Minato-ku, Tokyo,
1. Equipment specialized for exterior renovations
At Kakeru Koumuten Co., Ltd., we have organized the following warehouses and material storage areas to provide low-cost, high-quality exterior wall painting and waterproofing work for large-scale renovations.
We have established 5 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 renovations, 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, allowing us to provide rapid responses 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 in waste disposal can be achieved.
Exterior Renovation Dedicated Showroom
In the showroom, not only can you have meetings, but you can also
check actual samples and colors of exterior materials.
You can also perform color simulations for exterior wall painting and check 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 in-house management and construction.
From inquiries to project completion, everything is managed by Kakeru Koumuten in a consistent system, allowing for high-quality large-scale repairs at reduced costs.
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 fully handle everything from temporary scaffolding installation to exterior wall painting, substrate repair, waterproofing work, and tile repairs with in-house construction!
Qualified professionals with specialized knowledge and experience will conduct inspections and actual construction for each process!
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 and painting technicians on staff, giving us confidence in our construction techniques.
We are capable of handling large-scale roofing projects for factories and other facilities!
We have qualified personnel for asbestos management and asbestos surveyors, allowing us to handle asbestos-containing roofing materials and conduct preliminary surveys.
4. Warranty and Aftercare
Most large-scale repair works come with a guarantee for almost all types of work, including “painting work,” “substrate repair work,” and “waterproofing work”!
Aftercare maintenance is available every year, and we will send you a 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 exterior walls and rooftops that cannot be checked from high places by utilizing drones!
During rain leak investigations, we can use a thermal imaging camera to help identify the cause of the 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 at each stage of large-scale repair work.
7. Consideration for Residents and Neighbors
During large-scale repair work, we not only notify residents and greet neighbors, but also install bulletin boards at entrances to display schedules 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 is inspected by a responsible person, and detailed construction photos are taken.
We use film thickness testing equipment and check sheets during inspections to ensure that there are no oversights.
When performing exterior wall painting or waterproofing work, we confirm the quantity of used paint cans to ensure that the specified amount of paint is used, and we order paint in-house to prevent construction defects.
Of course, we also take photos of the used paint and report them accordingly.
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 doing a simulation and then applying a two-tone color or changing the image, we hope to help create a 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 walls.
By doing a test painting, you can confirm the actual color and gloss!
9-3 Exterior Renovation Simulation
We can also perform exterior simulations for apartments and condominiums as follows!
・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 or roof replacement work is also possible
With exterior renovation simulations, the risk of failure in image change can be minimized!
We hope that renovating the appearance of your apartment or condominium will help increase occupancy rates.
Subsidies and Grants That May Be Applicable for Large-Scale Renovations in Minato-ku, Tokyo
In Minato-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 Fixed Asset Tax)
There is a system that reduces fixed asset tax when large-scale renovations are conducted on condominiums.
◎ For more details, click here↓
Large-scale renovations on condominiums will reduce fixed asset tax! (PDF)
Is your condominium being regularly maintained? (PDF)
Tokyo Metropolitan Condominium Improvement Grant System
The Tokyo Metropolitan Government promotes proper maintenance and management of condominiums by providing grants (interest subsidies) in collaboration with the Japan Housing Finance Agency for management associations that plan improvements and repairs, such as exterior wall painting of common areas, rooftop waterproofing, and barrier-free modifications.
Additionally, installation work for solar power generation systems is also eligible for financing.
◎ For more details, click here↓
Grants for condominium repairs
Japan Housing Finance Agency
FY 2028 Grant Project: Promotion of Insulation and Renewable Energy in Rental Housing
The Tokyo Metropolitan Government is promoting a project that intensively supports rental housing owners who implement insulation renovations that contribute to tenant health, soundproofing, and security, as well as providing support for expenses when introducing renewable energy power through a combination of solar power generation and low-voltage bulk electricity procurement.
◎ For more details, click here↓
Announcement of the Start of the Insulation and Renewable Energy Promotion Project for Rental Housing
FY 2028 Rental Housing Insulation and Renewable Energy Promotion Project
FY 2028 Renovation Cost Subsidy System [Special Nursing Homes, etc.]
The Tokyo Metropolitan Government provides support for renovations of elderly facilities.
◎ For more details, click here↓
Explanation Video on Renovation Cost Subsidies for Special Nursing Homes, etc.
[Minato-ku] Subsidy for the Cost of Reinforcement Design and Earthquake Renovation Work for Non-Wooden Buildings
In Minato-ku, partial subsidies are provided for the costs of reinforcement design and earthquake renovation work for non-wooden buildings that meet certain criteria within the ward.
◎For more details, click below↓
About the Private Building Earthquake Resistance Promotion Project (Reinforcement Design and Renovation Work Subsidy)
【Brochure】Private Building Earthquake Resistance Promotion Project (PDF)
Examples of Costs for Large-Scale Renovations
This will provide examples of costs for each renovation project!
（度合いにより変動します）
（度合いにより変動します）
Resin Mortar
(Varies depending on the degree)
(Varies depending on the degree)
※Costs and warranty periods vary depending on shape, quantity, substrate condition, 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 ancillary 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 ancillary 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 |
| Process Leading to Construction |
| Due to leaks occurring from several areas such as the exterior walls and the rooftop, we proposed waterproofing for the entire exterior wall. Seven S is a clear waterproofing material for tile exterior walls, and while the cost is somewhat high, its waterproofing performance is excellent. Therefore, if leaks are occurring from several points on the exterior wall, it is a recommended waterproofing material. |
How to Choose a Large-Scale Renovation Contractor
There are many large-scale renovation contractors that cover Minato-ku, Tokyo, and it can be confusing to decide which contractor to choose.
Therefore, when requesting renovations for apartments, condominiums, and buildings, let’s confirm the following four points:
● Have extensive experience in large-scale renovations
● Confirm the presence of 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.
Have 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 contents with photos, it offers peace of mind as a reference when you actually request repairs.
If you are concerned about whether the contractor you are about to request will respond properly, choose a contractor with extensive experience in large-scale renovations.
It is also effective to refer to reviews on Google and review sites to look at skylight installation contractors!
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 troubles with residents and nearby neighbors. Therefore, it is necessary to prevent issues 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 at no cost, 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 a leak warranty.
Furthermore, 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.
At Kakeru Koumuten Co., Ltd., we send out annual direct mail for after-sales maintenance, allowing for yearly inspections.
For simple repairs such as partial sealing, we provide services at no charge.
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 estimates and reports!
Even for the same type of work, repair costs, warranties, and after-sales services may 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 substrate repair work and exterior wall painting”
“confirmation of the process”
and make detailed comparisons! If the quality of auxiliary materials is low or if steps are skipped, costs can be reduced, so avoid making decisions based solely on price!
Especially regarding substrate repair work, since it is not easily visible from the outside, be sure to check whether the repair method is appropriate for the condition of the substrate!
Check if it is managed in-house
Large-scale renovation work includes various tasks such as “substrate repair work,” “exterior wall painting,” “waterproofing work,” and “pipe replacement!”
The content of the plan will vary depending on the actual state of deterioration 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 will 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.
Additionally, one of the drawbacks 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. is a company that carries out 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 Minato-ku, Tokyo, please contact Kakeru Koumuten
Our company has handled many exterior wall renovations for condominiums and apartments in Minato-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 with 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 indoors are hot”, we will provide the best solutions for your specific requests and future repair plans.
We carry out everything from temporary scaffolding work to roof work and exterior wall painting work 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 as we are confident in our work!
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
List of Areas in Minato-ku, Tokyo
Minato-ku, Akasaka / Minato-ku, Azabu-Juban / Minato-ku, Azabudai / Minato-ku, Azabu Nagasaka-cho / Minato-ku, Azabu Tanukikoji / Minato-ku, Atago / Minato-ku, Kaigan / Minato-ku, Kita-Aoyama / Minato-ku, Konan / Minato-ku, Shibaura / Minato-ku, Shiba Park / Minato-ku, Shiba Daimon / Minato-ku, Shiba / Minato-ku, Platinum-dai / Minato-ku, Platinum / Minato-ku, Shimbashi / Minato-ku, Takanawa / Minato-ku, Odaiba / Minato-ku, Toranomon / Minato-ku, Nishi-Azabu / Minato-ku, Nishi-Shimbashi / Minato-ku, Hamamatsucho / Minato-ku, Higashi-Azabu / Minato-ku, Higashi-Shimbashi / Minato-ku, Mita / Minato-ku, Minami-Aoyama / Minato-ku, Minami-Azabu / Minato-ku, Moto-Akasaka / Minato-ku, Moto-Azabu / Minato-ku, Roppongi
・When should large-scale renovations be carried out? An explanation of the optimal timing and the risks of postponement!
・Estimates are essential when conducting large-scale renovations! Key points for comparison and precautions!
・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 precautions!
・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 the reasons needed, 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 averages!
・What is the important exterior wall painting in large-scale renovations? A thorough explanation of its necessity, signs of deterioration, and cost averages!
・For exterior renovations in Minato-ku, Tokyo, trust Kakeru Koumuten!
・For roof renovations in Minato-ku, Tokyo, trust Kakeru Koumuten!
・For exterior wall painting in Minato-ku, Tokyo, trust 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!
