Leave the repairs and renovations of condominiums and apartments in Saiwai-ku, Kawasaki to Kakeru Koumuten Co., Ltd.!
If you are looking for
a large-scale repair contractor in
Kawasaki City, Saiwai Ward, come to Kakeru Koumuten
Kakeru Koumuten is a complete in-house contractor capable of handling everything from temporary scaffolding installation to roof work, waterproofing, and exterior painting.
We have undertaken numerous large-scale repairs and exterior renovations for apartments, condominiums, and commercial facilities in Kawasaki City, Saiwai Ward.
“Subsidies and costs available for large-scale repairs in Saiwai Ward”
“How to choose a large-scale repair contractor in Saiwai Ward”
“Reasons why Kakeru Koumuten is chosen in Saiwai Ward”
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”!
Let’s obtain at least three estimates from large-scale repair companies that cover Saiwai Ward!
Reasons why Kakeru Koumuten is chosen for large-scale repairs in Kawasaki City, Saiwai Ward
One reason why we are entrusted with large-scale repairs in Aso Ward is that
“the fact that Kakeru Koumuten has a base in Yokohama City” 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 Kawasaki City, Saiwai Ward,
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 five bases centered around Yokohama City for our material storage and showroom.
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 performing 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 swift 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 them all 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 exterior material samples and colors.
Color simulations for exterior wall painting and confirmation of heat insulation properties using heat insulation testing equipment are also possible!
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 project completion.
Since the same person will manage sales and construction, smooth communication is possible.
We can handle everything from temporary scaffolding installation to exterior wall painting, substrate repairs, waterproofing, and tile repairs completely in-house!
Our specialists with 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 workers and painting specialists 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 asbestos supervisors and asbestos surveyors on staff, allowing us to 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 exterior walls and rooftops that cannot be checked from high places using drones!
During rain leak investigations, we can use a thermal imaging camera, which helps in identifying the cause of the leaks!
We will respond according to your wishes.
We also accept emergency measures for sudden rain leaks!
We will respond quickly to urgent requests and emergencies!
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 the points to be careful about and the 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 greet neighbors, but also install bulletin boards at entrances to display the construction schedule and announcements!
Additionally, we thoroughly educate entrants on manners to minimize 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 film thickness testing equipment and check sheets during inspections to ensure that no inspections are missed.
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 will 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 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 walls.
By performing test painting, you can confirm the actual color and sheen!
9-3 Exterior Renovation Simulation
We can also provide exterior simulations for apartments and condominiums as follows!
・Exterior wall color simulation (two-tone colors are possible)
・Simulation for when metal siding is applied
・Simulation using accent materials such as cornices and louvers
・Simulation for roof painting or roof replacement work is also possible
The risk of failure in image change through exterior renovation simulation 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 Sakae-ku, Kawasaki
In Sakae-ku, Kawasaki, 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 July 2026)
Condominium Long-Term Life Promotion Tax System (Special Measures for Fixed Asset Tax)
There is a system that reduces fixed asset tax when large-scale renovations are performed on condominiums.
◎ For more details, click here↓
Fixed asset tax is reduced when large-scale renovations are performed on condominiums! (PDF)
Is your condominium being regularly renovated? (PDF)
Kanagawa Prefecture Existing Housing Energy Conservation Renovation Subsidy
Eligible Applicants
The eligible applicants for this subsidy are owners of existing houses in Kanagawa Prefecture who reside in those houses on a daily basis. The eligible housing must be a residence where the owner themselves lives, regardless of whether it is a detached house or a condominium.
Eligible Work and Conditions
To receive the subsidy, the following requirements must be met. First, it is necessary to conduct energy conservation renovation work using products with insulation performance specified by the national government, targeting existing houses located in the prefecture, such as insulated windows, glass, and insulation materials. Additionally, the house must ensure seismic performance, and a preliminary application must be submitted before the start of construction, with construction commencing only after receiving a grant decision. Eligible renovation work includes insulation improvements for windows, floors, walls, and ceilings.
Subsidy Amount
The maximum amount for this subsidy is up to 200,000 yen per residence. This is the total subsidy provided when eligible energy conservation renovation work is carried out, and no more than this amount can be received.
Subsidy Rate
The burden ratio for the subsidy is **one-third (approximately 33%) of the eligible construction costs**. However, even if the calculated amount based on the subsidy rate exceeds the maximum of 200,000 yen, the amount granted will be limited to “the maximum amount”.
For more details, please see here!
Child-Rearing Green Housing Support Project
Eligible Applicants
This program targets child-rearing households (households with children under 18) and young couple households, focusing on those who are building or purchasing highly energy-efficient homes, or renovating existing homes for energy conservation. In the case of new construction, the builder or purchaser is eligible, while for renovations, the contractor placing the order is eligible for the subsidy.
Requirements
For new residential buildings, it is necessary to meet high energy-saving performance standards set by the government, such as ZEH standards or higher. In the case of renovations, it is required to carry out construction that improves the energy-saving performance of the house, such as insulation renovations or the introduction of energy-saving equipment. In both cases, it is necessary to contract with a registered business and carry out the construction within the specified period.
Maximum Subsidy Amount
For new builds, the maximum subsidy per unit ranges from 400,000 yen to 1,600,000 yen depending on the performance classification of the house, while for renovations, the maximum subsidy per unit ranges from 400,000 yen to 600,000 yen depending on the content of the work. In both cases, even if multiple constructions are carried out, it is not possible to receive subsidies exceeding this maximum amount.
Subsidy Rate
This program does not provide a subsidy based on a certain percentage of the construction cost; instead, a predetermined “fixed subsidy” is granted for each type of work and performance classification. Therefore, in effect, the government covers part of the construction costs.
For more details, please click here!
Advanced Window Renovation Project
Eligible Participants
Owners of existing homes (single-family homes and apartment buildings) who are conducting insulation renovation work on windows and openings are eligible. The actual subsidy application process is carried out by registered “window renovation contractors” recognized by the government, and the granted subsidies are fully refunded to the homeowners through discounts on construction costs.
Requirements
Eligible renovations include window improvements aimed at enhancing insulation performance, such as the installation of interior windows, replacement of exterior windows, and glass replacement in existing homes. It is necessary to use products that meet the insulation performance standards set by the government and to enter into a construction contract with a registered window renovation contractor. Additionally, the total subsidy amount must be 50,000 yen or more, and construction must start and be completed within the specified period.
Maximum Subsidy Amount
The maximum subsidy is 2,000,000 yen per unit. Even if multiple windows are renovated, the total subsidy that can be received for the same house is limited to this maximum amount.
Subsidy Rate
The subsidy rate is approximately equivalent to half of the construction costs. The actual subsidy amount is set at a fixed rate based on the type of window (interior window, exterior window, glass), size, and insulation performance classification, resulting in a total that is approximately 50% of the construction costs.
For more details, please click here!
Examples of Costs for Major Repairs
These are examples of costs for each repair work!
（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 the 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 Repair Work for a Mixed-Use Building
| Construction Details |
| Partial replacement of damaged tiles Painting of ancillary parts (pipes, water drainage) 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. 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 areas of 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 Kawasaki City, Saiwai Ward, and it can be confusing to decide which contractor to choose.
For this reason, when requesting renovations for apartments, condominiums, and buildings, let’s check the following four points.
● Extensive experience in large-scale renovations
● Confirm the presence of guarantees and aftercare services
● Obtain estimates from multiple contractors (at least three)
● Confirm whether they manage their own work
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 gives you peace of mind as it can serve as a reference when you actually request repairs.
If you are concerned about whether the contractor you are about to hire 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 when looking for 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 potential issues with residents and neighboring residents. 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 at no cost, providing peace of mind!
Additionally, companies that offer warranty periods can be seen as having confidence in their work, which can serve as a criterion for selecting a contractor!
Warranty periods vary by contractor and type of work, but typically range from 1 to 10 years.
Emergency repairs or partial repairs often do not come with a leak warranty.
Moreover, some contractors offer after-sales services separate from 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 as part of our after-sales maintenance, allowing for annual inspections.
For simple repairs such as partial sealing, we provide support 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 obtain estimates from at least three companies and compare their estimates and reports!
Even for the same type of work, repair costs can vary by contractor, and warranties and after-sales services may differ.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at a lower price, it is essential to obtain estimates from multiple contractors.
When comparing estimates, consider not just the cost, but also
“Items in the estimate”
“Methods and materials for substrate repair work and exterior wall painting”
“Confirmation of the process”
and make detailed comparisons! If the rank 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 often not visible from the exterior, 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 types of construction such as “substrate repair work,” “exterior wall painting,” “waterproofing work,” and “pipe replacement”!
The content of the plan may change 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 at a lower cost.
Additionally, one of the drawbacks of contractors that outsource is that if any trouble occurs during construction, their response may be delayed.
It is advisable to avoid companies that do not have direct meetings with customers managing the construction.
Kakeru Koumuten Co., Ltd. is a company that conducts 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 Saiwai-ku, Kawasaki, please contact Kakeru Koumuten
Our company has handled many exterior wall renovations for condominiums and apartments in Saiwai-ku, Kawasaki. 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 optimal solutions for your specific requests and future repair plans.
We conduct 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 for exterior work!
We welcome competitive estimates as we are confident in our work!
Areas Covered for Large-Scale Renovation Work
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
List of Areas in Saiwai-ku, Kawasaki
Endo-cho, Saiwai-ku / Omiya-cho, Saiwai-ku / Ogura, Saiwai-ku / Kashimada, Saiwai-ku / Kawahara-cho, Saiwai-ku / Kitakase, Saiwai-ku / Komukai, Saiwai-ku / Komukai-cho, Saiwai-ku / Komukai Toshi-cho, Saiwai-ku / Komukai Nakano-cho, Saiwai-ku / Komukai Nishi-cho, Saiwai-ku / Konyamachi, Saiwai-ku / Saiwai-cho, Saiwai-ku / Shimohirama, Saiwai-ku / Shinkogura, Saiwai-ku / Shinkawasaki, Saiwai-ku / Shintsukagoshi, Saiwai-ku / Shinmei-cho, Saiwai-ku / Tsukagoshi, Saiwai-ku / Todete Honmachi, Saiwai-ku / Todete, Saiwai-ku / Nakai Saiwai-cho, Saiwai-ku / Higashi Ogura, Saiwai-ku / Higashi Koichiba, Saiwai-ku / Koichiba, Saiwai-ku / Furukawa-cho, Saiwai-ku / Horikawa-cho, Saiwai-ku / Minamikase, Saiwai-ku / Minami Saiwai-cho, Saiwai-ku / Miyako-cho, Saiwai-ku / Yagami, Saiwai-ku / Yanagicho, Saiwai-ku
・When should large-scale renovations be carried out? An explanation of the optimal timing and the 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 surface repair, which is important 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 tile repair, which is important in large-scale renovations? An explanation of signs of deterioration, types of work, and cost averages!
・What is exterior wall painting, which is important in large-scale renovations? A thorough explanation of its necessity, signs of deterioration, and cost averages!
・For exterior renovations in Saiwai-ku, Kawasaki, trust Kakeru Koumuten Co., Ltd.!
・For roof renovations in Saiwai-ku, Kawasaki, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall painting in Saiwai-ku, Kawasaki, trust Kakeru Koumuten Co., Ltd.!
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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！
