Leave the repairs and renovations of condominiums and apartments in Hodogaya-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
If you’re looking for
a large-scale repair contractor in Aoba-ku, Yokohama,
come to Kakeru Koumuten Co., Ltd.
Kakeru Koumuten Co., Ltd. is a complete in-house construction company capable of handling everything from temporary scaffolding setup to roofing, waterproofing, and exterior painting.
We have undertaken numerous large-scale repairs and exterior renovations for apartments, condominiums, and commercial facilities in Aoba-ku, Yokohama.
“Subsidies and costs available for large-scale repairs in Aoba-ku”
“How to choose a large-scale repair contractor in Aoba-ku”
“Reasons why Kakeru Koumuten Co., Ltd. is chosen in Aoba-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 to consider when planning large-scale repairs is
“multiple estimates”!
Let’s obtain at least three estimates from large-scale repair companies that cover Aoba-ku!
Reasons why Kakeru Koumuten Co., Ltd. is chosen for large-scale repairs in Aoba-ku, Yokohama
One reason we are entrusted with large-scale repairs in Aoba-ku is that
“the fact that Kakeru Koumuten Co., Ltd. has a base in Yokohama” 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.
“cost,” “quality,” and “plans” for exterior renovations of apartments, condominiums, and commercial facilities in Aoba-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 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 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, enabling us to provide quick responses even in emergencies!
In-house Waste Separation
During large-scale repairs, 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 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 the completion of the work.
Since the same person will be in charge, whether it’s sales or construction management, smooth communication is possible.
We can fully handle everything from temporary scaffolding installation to exterior wall painting, substrate repair, waterproofing work, and tile repairs with our own staff!
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 technicians on staff, giving us confidence in our construction techniques.
We are capable of handling large-scale roofing projects for factories and other facilities!
We have qualified personnel for asbestos management and asbestos surveyors, allowing us to handle asbestos-containing roofing materials and conduct preliminary surveys.
4. Warranty and Aftercare
Most large-scale repair works come with 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 utilize drones to check exterior walls and rooftops that are not accessible from high places!
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 enhance their skills and conducts practical training.
Since different processing and techniques are required depending on the site, we regularly provide skill improvement training for each staff member to ensure they can respond appropriately.
We also educate on points to pay attention to 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 visit neighbors to greet and explain, but we also install bulletin boards at entrances to display project schedules and announcements!
Additionally, we thoroughly educate 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 there are no oversights.
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 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 actual photos of your apartment or building!
You can also perform the simulation on your smartphone or computer.
By simulating and then applying two-tone colors 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 doing a test paint, 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 also 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
With 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 Repairs 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 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 repairs are made to condominiums.
◎ For more details, click here↓
Large-scale repairs to condominiums will reduce fixed asset tax! (PDF)
Is your condominium undergoing regular repairs? (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 Work and Conditions
To receive the subsidy, the following requirements must be met. First, the renovation work must target existing houses in the prefecture and utilize products with insulation performance specified by the national government, such as windows, glass, and insulation materials for energy conservation renovations. Additionally, the house must ensure seismic performance, and a preliminary application must be submitted before the start of the work, with construction commencing only after receiving a grant decision. Eligible renovation work includes insulation upgrades 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 granted 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 still be “up to the maximum limit.”
For more details, please click here!
Child-Rearing Green Housing Support Project
Eligible Applicants
This program targets child-rearing households (households with children under 18) and young couples, focusing on the new construction or purchase of energy-efficient homes, or energy conservation 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 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 and the introduction of energy-saving equipment. In both cases, it is necessary to contract with a registered contractor and carry out the work 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 works are carried out, subsidies cannot exceed this upper limit.
Subsidy Rate
This program does not provide a subsidy based on a certain percentage of the construction cost, but instead offers a predetermined “fixed amount subsidy” based on the content of the 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
Owners 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 refunded to the homeowners through discounts on construction costs.
Requirements
Eligible renovations include the installation of interior windows, replacement of exterior windows, and glass replacement 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 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 as a fixed amount 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!
| Repair Method | Materials Used | Cost |
| Tile Replacement | Existing Similar Tiles | per piece/2,000 yen～4,000 yen |
| Repair of Floating Tiles and Mortar Areas | Epoxy Resin Injection | per square meter/3,000 yen～5,000 yen (Varies depending on the degree) |
| Tile Joint Mortar Repair | Mortar for Tile Joints | per square meter/1,000 yen～2,000 yen (Varies depending on the degree) |
| Concrete Spalling Repair | Reinforcement Rust Prevention Resin Mortar |
Per location/1,000 yen to 2,000 yen (Varies depending on the degree) |
| Crack Repair | Filler or Polymer Cement | m/100 yen to 2,500 yen (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 Repair 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 roof, 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 choice if 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 serve Aoba-ku, Yokohama, and it can be confusing to decide which one to choose.
Therefore, when requesting renovations for apartments, condominiums, or buildings, let’s check the following four points:
● Extensive experience in large-scale renovations
● Confirm the presence of warranties and aftercare services
● Obtain estimates from multiple contractors (at least three)
● Verify if they are self-managed
By confirming the above four points, you will be able to choose a trustworthy 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 can give you peace of mind 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 one with extensive experience in large-scale renovations.
It is also 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 making a request.
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, for example, 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, 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-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 for after-sales maintenance, allowing for inspections each year.
We provide free support for simple repairs such as partial sealing.
Obtain estimates from multiple contractors (at least 3 companies)
When requesting large-scale repairs, obtain estimates from multiple contractors.
It is important to get estimates from at least three companies and compare their quotes and reports!
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 preferred 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 substrate repair and exterior wall painting”
“confirmation of the process”
and make a detailed comparison! If the quality of the auxiliary materials is low or if steps are skipped, costs can be reduced, so avoid making decisions based solely on price!
Particularly for substrate 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 substrate!
Check if it’s managed in-house
Large-scale renovation work includes various tasks 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 result in additional time and costs as you have to investigate and then request subcontractors.
By having knowledge and experience and managing in-house, responsible construction can be carried out while keeping costs down.
Additionally, one of the 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 Aoba-ku, Yokohama, please contact Kakeru Koumuten
Our company has handled many exterior wall renovations for condominiums and apartments in Aoba-ku, Yokohama. 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 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 room is 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 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!
Areas Covered for Large-Scale Renovation Work
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
List of Areas in Aoba-ku, Yokohama
Arai-cho, Hodogaya-ku / Imai-cho, Hodogaya-ku / Iwai-cho, Hodogaya-ku / Iwasaki-cho, Hodogaya-ku / Iwama-cho, Hodogaya-ku / Okazawa-cho, Hodogaya-ku / Kasumidai, Hodogaya-ku / Kaito-cho, Hodogaya-ku / Kamadai-cho, Hodogaya-ku / Kamaya-cho, Hodogaya-ku / Kamisugita-cho, Hodogaya-ku / Kamihoshikawa, Hodogaya-ku / Kariba-cho, Hodogaya-ku / Kawashima-cho, Hodogaya-ku / Kawabe-cho, Hodogaya-ku / Kobe-cho, Hodogaya-ku / Gontazaka, Hodogaya-ku / Sakaiki-cho, Hodogaya-ku / Sakaikihoncho, Hodogaya-ku / Sakamoto-cho, Hodogaya-ku / Sakuragaoka, Hodogaya-ku / Shinsakuragaoka, Hodogaya-ku / Setogaya-cho, Hodogaya-ku / Tsukimidai, Hodogaya-ku / Tenno-cho, Hodogaya-ku / Tokiwadai, Hodogaya-ku / Nishikubo-cho, Hodogaya-ku / Nishitani-cho, Hodogaya-ku / Nishitani, Hodogaya-ku / Hatsuneoka, Hodogaya-ku / Hanamidai, Hodogaya-ku / Higashikawashima-cho, Hodogaya-ku / Fujizuka-cho, Hodogaya-ku / Butsukou-cho, Hodogaya-ku / Butsukou Nishi, Hodogaya-ku / Hozen, Hodogaya-ku / Hoshikawa, Hodogaya-ku / Hodogaya-cho, Hodogaya-ku / Mineoka-cho, Hodogaya-ku / Minezawa-cho, Hodogaya-ku / Miyata-cho, Hodogaya-ku / Myojindai, Hodogaya-ku / Wada, Hodogaya-ku
・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!
・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 to avoid failures!
・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 renovations in Aoba-ku, Yokohama, leave it to Kakeru Koumuten!
・For roof renovations in Aoba-ku, Yokohama, leave it to Kakeru Koumuten!
・For exterior wall painting in Aoba-ku, Yokohama, leave it to Kakeru Koumuten!
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！
