If you are looking for a
large-scale repair contractor in
Nakagun (Oiso Town, Ninomiya Town),
please contact Kakeru Koumuten Co., Ltd.
Kakeru Koumuten Co., Ltd. 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 Nakagun (Oiso Town, Ninomiya Town).
“Subsidies and costs available for large-scale repairs in Nakagun (Oiso Town, Ninomiya Town)”
“How to choose a large-scale repair contractor in Nakagun (Oiso Town, Ninomiya Town)”
“Reasons why Kakeru Koumuten Co., Ltd. is chosen in Nakagun (Oiso Town, Ninomiya Town)”
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 large-scale repairs is
“multiple estimates”!
Let’s obtain at least 3 estimates from large-scale repair companies that cover Nakagun (Oiso Town, Ninomiya Town)!
Reasons why Kakeru Koumuten Co., Ltd. is chosen for large-scale repairs in Nakagun (Oiso Town, Ninomiya Town)
One reason we are entrusted with large-scale repairs in Nakagun (Oiso Town, Ninomiya Town) is that
Kakeru Koumuten Co., Ltd. has a base in Kanagawa Prefecture, but
“Our unique approach to large-scale repair work that cannot be imitated by other companies” has received high praise from many customers.
1. Equipment Specialized for Exterior Renovation
Kakeru Koumuten Co., Ltd. has 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 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 repairs, allowing us to assemble scaffolding in-house.
By conducting scaffolding work with our own scaffolding team instead of outsourcing, we can cut costs on scaffolding work and provide quick and flexible responses.
We have approximately enough scaffolding materials for 100 single-family homes!
Storage of Materials in Our Large In-House 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 respond quickly in emergencies!
In-house Waste Separation
In large-scale repairs, various types of waste materials such as leftover paint, metal, and wood are generated.
While most contractors dispose of these materials together, by separating and recycling waste materials, we can significantly cut down on waste disposal costs.
Showroom Dedicated to Exterior Renovations
In our showroom, not only can you have meetings, but you can also
check actual exterior material samples and colors.
You can also perform color simulations for exterior wall painting and check thermal insulation properties using a thermal 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.
By managing everything from inquiries to project completion in a consistent system, we can keep costs down while providing high-quality large-scale repairs.
Additionally, one representative will handle everything from the estimate to project completion.
Since the担当者 (person in charge) does not change, whether it be sales or construction management, smooth communication is possible.
We can fully handle everything from temporary scaffolding setup to exterior wall painting, substrate repairs, waterproofing work, and tile repairs with in-house construction!
Those with specialized knowledge and experience will conduct inspections and actual construction for each process!
3. Various Permits and Skilled Workers on Staff
We have obtained permits for construction work and industrial waste collection and transportation!
We have nationally certified sheet metal workers and painting technicians on staff, and we are confident in our construction techniques.
We are also capable of handling large-scale roofing projects such as those for factories!
We have qualified asbestos supervisors and asbestos surveyors on staff, so we can handle asbestos-containing roofing materials and conduct preliminary surveys.
4. Warranty and Aftercare
Most large-scale repair works, including “painting work,” “substrate repair work,” and “waterproofing work,” come with a warranty!
Aftercare is available every year, and we send out annual notification DM.
5. Flexible and Prompt Response
Our company is equipped to handle various troubles and situations related to apartments and condominiums.
We can also address external walls and rooftops that cannot be checked from high places by utilizing drones!
During rain leak investigations, we can use a thermal imaging camera to help identify the cause of 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 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 that each staff member can respond effectively.
We also educate on points to be careful of and areas to check 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 we also install bulletin boards in entrances to display the work schedule and announcements!
Additionally, we ensure that the manners of visitors are taught thoroughly to minimize any inconvenience to residents and neighbors.
8. Strict Quality Control
Each phase involves inspections by responsible personnel and detailed construction photographs are taken.
We use film thickness testing equipment and check sheets during inspections to ensure that no inspections are overlooked.
When it comes to exterior wall painting and waterproofing work, we confirm the quantity of used paint cans to ensure that the specified amount of paint is being used, and we order paint directly from our company to prevent construction defects in advance.
Of course, we will also take photographs of the used paint and report them accordingly.
9. Color Simulation for Exterior Wall Painting
9-1 Self Color Simulation
The simulations we create 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 making image changes, 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 the Actual Color with Test Painting!
Samples of the paint you are considering can be ordered, allowing for trial painting on your exterior walls.
By conducting a trial painting, you can confirm the actual color and gloss!
9-3 Exterior Renovation Simulation
Exterior simulations for apartments and condominiums are also possible!
・Exterior wall color simulation (two-tone colors are also possible)
・Simulation for when metal siding is applied
・Simulation using accent materials like cornices and louvers
・Simulations for roof painting and roof replacement work are 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 Repairs in Nakagun (Oiso Town and Ninomiya Town)
In Nakagun (Oiso Town and Ninomiya Town), there may be 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)
Tax System for Promoting Longevity of Condominiums (Special Measures for Property Tax)
There is a system that reduces property tax when large-scale repairs are made to condominiums.
◎For more details, click here↓
Property tax is reduced when large-scale repairs are made to condominiums! (PDF)
Is your condominium regularly maintained? (PDF)
Kanagawa Prefecture Existing Housing Energy Efficiency Renovation Subsidy
Eligible Applicants
The eligible recipients for this subsidy are owners of existing homes located in Kanagawa Prefecture who reside in those homes on a daily basis. The eligible residences must be homes where the owner themselves lives, regardless of whether they are single-family homes or condominiums.
Eligible Works and Conditions
To receive the subsidy, the following requirements must be met. First, it is necessary to target existing homes in the prefecture and carry out energy-saving renovation work using products such as windows, glass, and insulation materials that meet the thermal insulation performance specified by the national government. Additionally, the residence must ensure seismic performance, and a prior application must be submitted before starting the work, with the condition that construction begins only after receiving a grant decision. Eligible renovation works include 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-saving 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 provided will be limited to “up to the maximum amount.”
For more details, please see here!
Child-Rearing Green Housing Support Project
Eligible Recipients
This program targets child-rearing households (households with children under 18) and young couple households, focusing on those who are building or purchasing homes with high energy-saving performance, or conducting energy-saving renovations on existing homes. For new construction, the builder or purchaser is eligible, while for renovations, the contractor placing the order is eligible for the subsidy.
Requirements
For new homes, it is necessary to meet the high energy-saving performance standards set by the national government, such as exceeding ZEH standards. For renovations, it is required to carry out works that improve the energy-saving performance of the home, such as insulation improvements or the introduction of energy-saving equipment. In both cases, it is necessary to contract with a registered business and carry out the work within the specified period.
Maximum Subsidy Amount
For new construction, the maximum subsidy amount ranges from 400,000 yen to 1,600,000 yen per unit, depending on the performance category of the home. For renovations, the maximum subsidy amount ranges from 400,000 yen to 600,000 yen per unit, depending on the content of the work. In either case, even if multiple works are carried out, the total subsidy received cannot exceed this maximum amount.
Subsidy Rate
This project does not provide a subsidy based on a certain percentage of the construction costs; instead, a predetermined “fixed subsidy” is provided for each type of work and performance category. Therefore, in effect, the national government bears part of the construction costs.
For more details, please click here!
Advanced Window Renovation Project
Eligible Participants
This program is aimed at homeowners of existing residential buildings (single-family homes and multi-family dwellings) who are undertaking insulation renovation work on windows and openings. 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 construction costs.
Requirements
Eligible renovations include the installation of interior windows, replacement of exterior windows, and glass replacements aimed at improving insulation performance 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 amount of subsidies must be 50,000 yen or more, and the work must commence and be completed within the specified construction period.
Maximum Subsidy Amount
The maximum subsidy is 2 million yen per unit. Even if multiple windows are renovated, the total subsidy that can be received for the same residence will not exceed this maximum amount.
Subsidy Rate
The subsidy rate is approximately half of the construction costs. The actual subsidy amount is set at a fixed rate based on the type of window (interior, exterior, glass), size, and insulation performance category, resulting in a total that is approximately 50% of the construction costs.
For more details, please click here!
[Oiso Town]
[Ninomiya Town]
Examples of Costs for Major Repairs
These are examples of costs for each repair 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 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 cuts) 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 |
| Progress Before Construction |
| Due to leaks occurring from several areas such as the exterior walls and the roof, we proposed waterproofing for the entire exterior. Seven S is a clear waterproofing material for tile exterior walls, and while it is somewhat expensive, its high waterproofing performance makes it a recommended choice when leaks are occurring from multiple areas of the exterior. |
How to Choose a Large-Scale Renovation Contractor
There are many large-scale renovation contractors that cover Nakaguni (Oiso Town and Ninomiya Town), and it can be confusing to decide which contractor to choose.
Therefore, when requesting renovations for apartments, condominiums, or buildings, make sure to 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)
● Verify if they manage their own projects
By confirming the above four points, you will be able to choose a reliable contractor.
Extensive Experience in Large-Scale Renovations
Large-scale renovation contractors often have websites that showcase their exterior remodeling achievements.
Additionally, if they provide detailed explanations of repair contents 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 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 conflicts with residents and nearby neighbors. Therefore, it is essential 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 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.
We also provide free support for simple repairs such as partial sealing.
Obtain estimates from multiple contractors (at least 3 companies)
When requesting large-scale repairs, make sure to obtain estimates from multiple contractors.
It is important to get estimates from at least three companies and compare their reports and estimates!
Even for the same type of work, repair costs and warranties or after-sales services can vary by contractor.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at the best possible price, obtaining estimates from multiple contractors is essential.
When comparing estimates, consider not only the cost but also
“the items in the estimate”
“the methods and materials for base repairs and exterior wall painting”
“confirmation of the process”
and make detailed comparisons for 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 can be difficult to assess visually, ensure that the repair method is suitable 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 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 performed while keeping costs down.
Additionally, one of the drawbacks of contractors that outsource to subcontractors is that if any trouble occurs during construction, their response may be delayed.
It is prudent to avoid having a company that has not actually met with the customer manage the construction.
Kakeru Koumuten Co., Ltd. is a company that performs 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 Nakaguni (Oiso Town, Ninomiya Town), please contact Kakeru Koumuten
Our company has handled many exterior wall renovations for condominiums and apartments in Nakaguni (Oiso Town, Ninomiya Town). 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 perform everything from temporary scaffolding work to roofing and exterior wall painting work entirely 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 services!
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
List of areas in Nakaguni (Oiso Town, Ninomiya Town), Kanagawa Prefecture
Oiso Town
Oiso Town Ikisawa / Oiso Town Ishigamidai / Oiso Town Oiso / Oiso Town Tsukikyo / Oiso Town Kuroiwa / Oiso Town Kōfu Shinjuku / Oiso Town Kōfu Hongō / Oiso Town Kōrai / Oiso Town Terasaka / Oiso Town Nishikubo / Oiso Town Nishikoiso / Oiso Town Higashikoiso / Oiso Town Higashimachi / Oiso Town Mushikubo
Ninomiya Town
Ninomiya Town Isshiki / Ninomiya Town Kawai / Ninomiya Town Nakazato / Ninomiya Town Ninomiya / Ninomiya Town Fujimigaoka / Ninomiya Town Matsune / Ninomiya Town Midorigaoka / Ninomiya Town Yamanishi / Ninomiya Town Yurigaoka
・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 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!
・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 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 important tile repair in large-scale renovations? An explanation of signs of deterioration, types of work, and cost averages!
・What is important exterior wall painting in large-scale renovations? A thorough explanation of its necessity, signs of deterioration, and cost averages!
・For exterior wall painting in Oiso Town, Nakagun, Kanagawa Prefecture, trust Kakeru Koumuten!
・For exterior wall painting in Ninomiya Town, Nakagun, Kanagawa Prefecture, trust Kakeru Koumuten!
・For roof renovations in Oiso Town, Nakagun, Kanagawa Prefecture, trust Kakeru Koumuten!
・For roof renovations in Ninomiya, Nakagun, Kanagawa, trust Kakeru Koumuten Co., Ltd.!
・For exterior renovations in Oiso, Nakagun, Kanagawa, trust Kakeru Koumuten Co., Ltd.!
・For exterior renovations in Ninomiya, Nakagun, Kanagawa, trust Kakeru Koumuten Co., Ltd.!
We also welcome consultations via LINE◎
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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!
