Leave the repairs and renovations of condominiums and apartments in Kanagawa-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
If you are looking for
a large-scale renovation contractor
in Kanagawa-ku, Yokohama, come to Kakeru Koumuten
Kakeru Koumuten is a complete in-house contractor capable of handling everything from temporary scaffolding installation to roofing, waterproofing, and exterior painting.
We have undertaken numerous large-scale renovations and exterior remodels for apartments, condominiums, and commercial facilities in Kanagawa-ku, Yokohama.
“Subsidies and costs available for large-scale renovations in Kanagawa-ku”
“How to choose a large-scale renovation contractor in Kanagawa-ku”
“Why Kakeru Koumuten is chosen in Kanagawa-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 when considering a large-scale renovation is
“multiple estimates”!
Let’s obtain at least 3 estimates from large-scale renovation companies that cover Kanagawa-ku!
Reasons why Kakeru Koumuten is chosen for large-scale renovations in Kanagawa-ku, Yokohama
One reason why we are entrusted with large-scale renovations in Kanagawa-ku is that
“the fact that Kakeru Koumuten has a base in Yokohama” is one reason, but
“our unique approach to large-scale renovation projects that cannot be imitated by other companies”
has received high praise from many customers.
“cost, quality, and plans” for exterior renovations of apartments, condominiums, and commercial facilities in Kanagawa-ku, Yokohama,
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 renovations.
We have established five bases centered around Yokohama.
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 not outsourcing scaffolding work and using our own scaffolding team, 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 procure materials at a lower cost!
Additionally, we always have stock available, enabling us to provide swift responses even in emergencies!
In-house Waste Separation
In large-scale renovations, various waste materials such as leftover paint, metal, and wood are generated.
While most contractors dispose of them all together, 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 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 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 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, and tile repairs entirely in-house!
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 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 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 construction, 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 to help 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 for skill enhancement and conducts practical training.
Since different processing and techniques are required depending on the site, we regularly provide skill improvement education to ensure 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 set up bulletin boards in entrances to display the schedule and announcements!
Additionally, we ensure thorough etiquette training for visitors to minimize 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 prevent any oversight.
When performing exterior wall painting or waterproofing work, we confirm the quantity of used paint cans to ensure 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.
9. Exterior Wall Painting Color Simulation
9-1 Self Color Simulation
Our simulations can be created from actual photos of your apartment or building!
You can also perform simulations on your smartphone or computer.
By simulating and then applying a two-tone color or changing the image, we hope to help you achieve 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 conducting 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 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
By using exterior renovation simulations, you can significantly reduce the risk of failure in image changes!
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 Aoba-ku, Yokohama
In Aoba-ku, Yokohama, there are potential subsidies available when carrying out renovation work on apartments and condominiums!
For details, please contact our company or the respective 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 performed on condominiums.
◎ For more details, click here↓
Fixed Asset Tax is Reduced When Large-Scale Renovations are Done 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 located 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 single-family home or a condominium.
Eligible Works and Conditions
To receive the subsidy, the following requirements must be met. First, it is necessary to conduct energy conservation renovation work using products such as windows, glass, and insulation materials with specified insulation performance designated by the national government, targeting existing houses within the prefecture. Additionally, the house must ensure seismic performance, and a prior application must be submitted before starting the work, with construction commencing only after receiving a grant decision. Eligible works include insulation renovations 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 limit of 200,000 yen, the amount provided will be “up to the maximum limit.”
For more details, please see here!
Child-Rearing Green Housing Support Project
Eligible Applicants
Households with children (households with children under 18) and young couples are eligible for new construction or purchase of highly energy-efficient homes, or energy conservation renovations of existing homes. In new construction, the builder or buyer is eligible, while in renovations, the contractor who orders the work is eligible for the subsidy.
Requirements
For newly built houses, 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 work 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.
Subsidy Upper Limit
For new constructions, the upper limit is between 400,000 yen and 1,600,000 yen per unit, depending on the performance classification of the house. For renovations, the upper limit is between 400,000 yen and 600,000 yen per unit, depending on the content of the work. In either case, even if multiple constructions are carried out, it is not possible to receive subsidies exceeding this upper limit.
Subsidy Rate
This program does not provide a subsidy based on a certain percentage of the construction cost; instead, a predetermined “fixed subsidy” is provided for each type of work and performance classification. Therefore, in effect, the government bears part of the construction cost.
For more details, please click here!
Advanced Window Renovation Project
Eligible Participants
Homeowners of existing houses (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 returned to the homeowners through discounts on the construction costs.
Requirements
Eligible works include window renovation projects aimed at improving insulation performance, such as installing interior windows, replacing exterior windows, and replacing glass 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 the work must start and be completed within the specified construction period.
Subsidy Upper Limit
The upper limit for subsidies 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 upper limit.
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）
（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, 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 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. 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 waterproofing material when leaks are occurring from multiple areas of the exterior wall. |
How to Choose a Large-Scale Renovation Contractor
There are many large-scale renovation contractors that cover Kanagawa-ku, Yokohama, and it can be confusing to decide which one to choose.
Therefore, 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 are self-managed
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 the 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 a contractor with extensive experience in large-scale renovations.
It can also be effective to refer to reviews of skylight installation contractors on 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 troubles with residents and nearby neighbors. Therefore, it is necessary to prevent issues by reporting the progress of the work and sharing information about laundry, etc., on bulletin boards.
Kakeru Koumuten Co., Ltd. specializes in exterior work, 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 work is completed, 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 demonstrate confidence in their work, which can serve as a 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 as part of our 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 three)
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 and warranties or after-sales services may differ between contractors.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at a lower 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 repair work and exterior wall painting”
“confirmation of the process”
and make detailed comparisons to make your judgment! 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 base repair work, which may not be easily visible from the outside, ensure that the repair method is suitable for the condition of the underlying issues!
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 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 also result in additional time and costs as you have to investigate and then request a subcontractor.
By having knowledge and experience and managing in-house, responsible construction can be carried out while keeping costs down.
Additionally, 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 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 Kanagawa-ku, Yokohama, please contact Kakeru Koumuten
Our company has handled many exterior wall renovations for condominiums and apartments in Kanagawa-ku, Yokohama. We are happy to assist not only with large-scale renovation work but also with partial repairs and rain leak repairs.
In urgent cases such as rain 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 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 efficiency compared to other companies in exterior work!
We welcome competitive estimates with confidence!
Areas Covered for Large-Scale Renovation Work
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
List of Areas in Kanagawa-ku, Yokohama
Aoki-cho, Kanagawa-ku, Yokohama / Asahigaoka, Kanagawa-ku, Yokohama / Ideta-cho, Kanagawa-ku, Yokohama / Izumicho, Kanagawa-ku, Yokohama / Irie, Kanagawa-ku, Yokohama / Urashimaoka, Kanagawa-ku, Yokohama / Urashima-cho, Kanagawa-ku, Yokohama / Ebisu-cho, Kanagawa-ku, Yokohama / Oguchi-dori, Kanagawa-ku, Yokohama / Oguchi Nakacho, Kanagawa-ku, Yokohama / Ohno-cho, Kanagawa-ku, Yokohama / Katakura, Kanagawa-ku, Yokohama / Kanagawa Honmachi, Kanagawa-ku, Yokohama / Kanagawa, Kanagawa-ku, Yokohama / Kamitabancho, Kanagawa-ku, Yokohama / Kaminokidai, Kanagawa-ku, Yokohama / Kaminoki-cho, Kanagawa-ku, Yokohama / Kamezumi-cho, Kanagawa-ku, Yokohama / Kandai-ji, Kanagawa-ku, Yokohama / Kirihata, Kanagawa-ku, Yokohama / Kinkou-cho, Kanagawa-ku, Yokohama / Kuritadani, Kanagawa-ku, Yokohama / Saiwai-gaya, Kanagawa-ku, Yokohama / Koyasudai, Kanagawa-ku, Yokohama / Koyasu-dori, Kanagawa-ku, Yokohama / Saito Buncho, Kanagawa-ku, Yokohama / Sakae-cho, Kanagawa-ku, Yokohama / Sawatari, Kanagawa-ku, Yokohama / Sanmae-cho, Kanagawa-ku, Yokohama / Shirahata Kamimachi, Kanagawa-ku, Yokohama / Shirahata-cho, Kanagawa-ku, Yokohama / Shirahata Nakacho, Kanagawa-ku, Yokohama / Shirahata Nishimachi, Kanagawa-ku, Yokohama / Shirahata Higashimachi, Kanagawa-ku, Yokohama / Shirahata Minamimachi, Kanagawa-ku, Yokohama / Shirahata Mukaimachi, Kanagawa-ku, Yokohama / Shin Urashima-cho, Kanagawa-ku, Yokohama / Shin Koyasu, Kanagawa-ku, Yokohama / Shinmachi, Kanagawa-ku, Yokohama / Sugata-cho, Kanagawa-ku, Yokohama / Suzusaka-cho, Kanagawa-ku, Yokohama / Takashimadai, Kanagawa-ku, Yokohama / Takaracho, Kanagawa-ku, Yokohama / Tachimach, Kanagawa-ku, Yokohama / Tabancho, Kanagawa-ku, Yokohama / Nakamaru, Kanagawa-ku, Yokohama / Nanajima-cho, Kanagawa-ku, Yokohama / Nishi Oguchi, Kanagawa-ku, Yokohama / Nishi Kanagawa, Kanagawa-ku, Yokohama / Nishi Terao, Kanagawa-ku, Yokohama / Nihon Enoki, Kanagawa-ku, Yokohama / Shirakaku, Kanagawa-ku, Yokohama / Hazawacho, Kanagawa-ku, Yokohama / Hazawa Minami, Kanagawa-ku, Yokohama / Hashimoto-cho, Kanagawa-ku, Yokohama / Higashi Kanagawa, Kanagawa-ku, Yokohama / Hirakawa-cho, Kanagawa-ku, Yokohama / Hirodai Ota-cho, Kanagawa-ku, Yokohama / Futatsutani-cho, Kanagawa-ku, Yokohama / Hoshino-cho, Kanagawa-ku, Yokohama / Matsugaoka, Kanagawa-ku, Yokohama / Matsumimicho, Kanagawa-ku, Yokohama / Matsumoto-cho, Kanagawa-ku, Yokohama / Mizuho-cho, Kanagawa-ku, Yokohama / Mitsuzawa Kamimachi, Kanagawa-ku, Yokohama / Mitsuzawa Shimomachi, Kanagawa-ku, Yokohama / Mitsuzawa Nakacho, Kanagawa-ku, Yokohama / Mitsuzawa Nishimachi, Kanagawa-ku, Yokohama / Mitsuzawa Higashimachi, Kanagawa-ku, Yokohama / Mitsuzawa Minamimachi, Kanagawa-ku, Yokohama / Moriya-cho, Kanagawa-ku, Yokohama / Yamauchi-cho, Kanagawa-ku, Yokohama / Rokkakubashi, Kanagawa-ku, Yokohama
・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 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!
・Insufficient 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 Aoba-ku, Yokohama, trust Kakeru Koumuten Co., Ltd.!
・For roof renovations in Aoba-ku, Yokohama, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall painting in Aoba-ku, Yokohama, trust Kakeru Koumuten Co., Ltd.!
We welcome inquiries via LINE as well◎
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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！
