Leave the repairs and renovations of condominiums and apartments in Nishi-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
If you are looking for
large-scale repair contractors
in Nishi-ku, Yokohama, come to Kakeru Koumuten
Kakeru Koumuten is a complete in-house construction company capable of
everything from temporary scaffolding setup to roof work, waterproofing, and exterior painting.
We have handled numerous large-scale repairs and exterior renovations for apartments, condominiums, and commercial facilities
in Nishi-ku, Yokohama.
“Subsidies and costs available for large-scale repairs in Nishi-ku”
“How to choose a large-scale repair contractor in Nishi-ku”
“Reasons why Kakeru Koumuten is chosen in Nishi-ku”
These topics will be very 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 large-scale repairs is
“multiple estimates”!
Let’s obtain at least three estimates from large-scale repair companies
serving Nishi-ku!
Reasons why Kakeru Koumuten is chosen for large-scale repairs in Nishi-ku, Yokohama
One reason why we are entrusted with large-scale repairs in Nishi-ku
is that “Kakeru Koumuten has a base in Yokohama City,”
but also “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” for exterior renovations of apartments, condominiums, and commercial facilities in Nishi-ku,
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.
In-house Scaffolding Materials
We own the scaffolding materials necessary for temporary scaffolding required for large-scale repairs and can assemble the 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, since we always have stock available, we can provide swift responses 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 these materials together, separating and recycling waste can significantly reduce waste disposal costs.
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 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 are capable of handling large-scale roofing projects for factories and other facilities!
We also 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 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 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 the leaks!
We will respond according to your wishes.
We also accept emergency measures for sudden rain leaks!
We will promptly respond 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 at each site, we regularly provide skill enhancement training to ensure that each staff member can respond appropriately.
We also educate our team on important points and verification areas to pay attention to during each phase 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 at entrances to display schedules and announcements!
Additionally, we thoroughly educate our entrants on proper manners to minimize any inconvenience to residents and neighbors.
8. Strict Quality Control
Each phase 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 overlooked.
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 directly from our company 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 simulations on your smartphone or computer.
By simulating and then applying two-tone colors 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 perform test painting on your exterior walls.
By conducting a 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 like cornices and louvers
・Simulation for roof painting or roof replacement work is also possible
With the exterior renovation simulation, 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.
Potential Subsidies and Grants for Large-Scale Renovations in Nishi-ku, Yokohama
In Nishi-ku, Yokohama, there are potential subsidies available when carrying out renovation work on apartments and condominiums!
For details, please contact our company or your local government! (As of July 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↓
Large-scale renovations on condominiums can reduce fixed asset tax! (PDF)
Is your condominium being regularly maintained? (PDF)
Kanagawa Prefecture Existing Housing Energy Conservation Renovation Subsidy
Eligible Applicants
The eligible applicants for this subsidy are owners of existing homes located in Kanagawa Prefecture who reside in those homes on a daily basis. The eligible homes must be residences where the owner themselves lives, regardless of whether they are single-family homes or condominiums.
Eligible Work and Conditions
To receive the subsidy, the following requirements must be met. First, the renovation work must target existing homes in the prefecture and use products such as windows, glass, and insulation materials that meet the insulation performance standards specified by the national government for energy conservation renovations. Additionally, the home must ensure seismic performance, and a pre-application must be submitted before starting the work, 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 limit of 200,000 yen, the amount granted will be “up to the maximum limit.”
For more details, please see here!
Child-Rearing Green Housing Support Project
Eligible Applicants
This program is aimed at child-rearing households (households with children under 18) and young couples, focusing on the new construction or purchase of homes with high energy conservation performance, or energy-saving renovations of existing homes. In new construction, the builder or purchaser is eligible, while in renovations, the contractor placing the order is eligible for the subsidy.
Requirements
For newly built houses, it is necessary to meet the high energy-saving performance standards set by the government, such as ZEH standards. 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 and 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 maximum subsidy per unit is between 400,000 yen and 1,600,000 yen, 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, the subsidy cannot exceed this upper limit.
Subsidy Rate
This program does not provide a subsidy based on a certain percentage of the construction costs; instead, a predetermined “fixed subsidy” is provided based on the content of the work and performance classification. Therefore, in effect, the government covers a portion of the construction costs.
For more details, please see here!
Advanced Window Renovation Project
Eligible Participants
Owners of existing houses (single-family homes and apartment buildings) who are conducting insulation renovation work on windows and openings are eligible. The actual application process for the subsidy is carried out by registered “window renovation contractors” recognized by the government, and the granted subsidy is fully refunded to the homeowners through discounts on the construction costs.
Requirements
Eligible renovations include window improvements aimed at enhancing 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 construction must start and be completed within the specified period.
Subsidy Upper Limit
The upper limit for the 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 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 see 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. Seven S is a clear waterproofing material for tile exterior walls, and while it is somewhat expensive, it offers high waterproofing performance. 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 serve Nishi-ku, Yokohama, and it can be confusing to decide which contractor to choose.
For this reason, when requestingrenovations for apartments, condominiums, or buildings, please check 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 checking the above four points, you will be able to select a trustworthy contractor.
Have Extensive Experience in Large-Scale Renovations
Large-scale renovation contractors often have websites that showcase their exterior renovation projects.
Additionally, if they provide detailed explanations of the repair work with photos, it offers 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 adequately, choose a contractor with extensive experience in large-scale renovations.
It can also be effective to refer to reviews on Google and review sites when looking 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-service 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, 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 a leak warranty.
Moreover, some contractors offer after-service maintenance separate from warranties, so be sure to check if the contractor you are considering has warranties and after-service maintenance.
At Kakeru Koumuten Co., Ltd., we send out annual direct mail for after-service maintenance, allowing for yearly inspections.
We also provide free assistance for simple repairs such as partial sealing.
Obtain estimates from multiple contractors (at least 3 companies)
When requesting large-scale repairs, be sure to 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 between contractors, as can warranties and after-service maintenance.
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, it is important to look at more than just the cost,
“Items in the estimate”
“Methods and materials for base repairs and exterior 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 base repair work, which can be difficult to assess from appearance alone, be sure to check whether the repair method is appropriate for the condition of the base!
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 plan details 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 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.
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 companies that manage construction without having actual meetings with the customers.
Kakeru Koumuten Co., Ltd. handles everything from temporary scaffolding installation to exterior wall painting and waterproofing work in-house.
Knowledgeable and experienced staff will manage the construction!
If you are looking for a large-scale renovation contractor in Nishi-ku, Yokohama, please contact Kakeru Koumuten
Our company has handled many exterior wall renovations for condominiums and apartments in Nishi-ku, Yokohama. We are happy to assist not only with large-scale renovation work but also with partial repairs and rain leak repairs.
In case of emergencies like rain leaks, we may be able to provide temporary 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 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 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 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 Nishi-ku, Yokohama
Aoba-ku, Yokohama Akamoncho / Aoba-ku, Yokohama Higashigaoka / Aoba-ku, Yokohama Isecho / Aoba-ku, Yokohama Oimatsucho / Aoba-ku, Yokohama Okano / Aoba-ku, Yokohama Kasumigaoka / Aoba-ku, Yokohama Kitakaruizawa / Aoba-ku, Yokohama Kitakou / Aoba-ku, Yokohama Kusunokicho / Aoba-ku, Yokohama Kubomachi / Aoba-ku, Yokohama Goshoyamacho / Aoba-ku, Yokohama Sakaenotani / Aoba-ku, Yokohama Sakuragicho / Aoba-ku, Yokohama Asamadai / Aoba-ku, Yokohama Asamacho / Aoba-ku, Yokohama Takashima / Aoba-ku, Yokohama Chuo / Aoba-ku, Yokohama Tobecho / Aoba-ku, Yokohama Tobe Honmachi / Aoba-ku, Yokohama Nishitobecho / Aoba-ku, Yokohama Nishihiranumacho / Aoba-ku, Yokohama Nishimaecho / Aoba-ku, Yokohama Hanasakicho / Aoba-ku, Yokohama Hamamatsucho / Aoba-ku, Yokohama Higashikubomachi / Aoba-ku, Yokohama Hiranuma / Aoba-ku, Yokohama Fujidana / Aoba-ku, Yokohama Minatomirai / Aoba-ku, Yokohama Minami Karuizawa / Aoba-ku, Yokohama Minami Sachi / Aoba-ku, Yokohama Minami Asamacho / Aoba-ku, Yokohama Miyagatani / Aoba-ku, Yokohama Miyazakicho / Aoba-ku, Yokohama Motokubomachi / Aoba-ku, Yokohama Momijigaoka
・When should large-scale renovations be carried out? An explanation of the optimal timing and risks of postponement!
・Estimates are essential when conducting large-scale renovations! Key comparison points 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 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 Nishi-ku, Yokohama, trust Kakeru Koumuten!
・For roof renovations in Nishi-ku, Yokohama, trust Kakeru Koumuten!
・For exterior wall painting in Nishi-ku, Yokohama, trust Kakeru Koumuten!
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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！
