目次
- 1 If you are looking for a large-scale renovation contractor in Minami-ku, Sagamihara, come to Kakeru Koumuten
- 2 Reasons why Kakeru Koumuten is chosen for large-scale renovations in Minami-ku, Sagamihara
- 2.1 1. Equipment specialized for exterior renovations
- 2.2 2. Cost Reduction through In-House Management and Construction
- 2.3 3. Various Permits and Skilled Workers
- 2.4 4. Warranty and Aftercare
- 2.5 5. Flexible and Quick Response
- 2.6 6. Human Resource Development
- 2.7 7. Consideration for Residents and Neighbors
- 2.8 8. Strict Quality Control
- 2.9 9. Color Simulation for Exterior Wall Painting
- 3 Subsidies and Grants That May Be Applicable for Large-Scale Repairs in Minami-ku, Sagamihara
- 4 Examples of Costs for Major Repairs
- 5 Customer Testimonials
- 6 Case Study of Exterior Renovation Work on a Mixed-Use Building
- 7 How to Choose a Large-Scale Renovation Contractor
- 8 If you are looking for a large-scale renovation contractor in Minami-ku, Sagamihara, please contact Kakeru Koumuten
If you are looking for
a large-scale renovation contractor
in Minami-ku, Sagamihara, come to Kakeru Koumuten
Kakeru Koumuten is a complete in-house contractor capable of handling
everything from temporary scaffolding installation to roofing work, waterproofing, and exterior painting.
We have undertaken numerous large-scale renovations and exterior renovations
for apartments, condominiums, and commercial facilities in Minami-ku, Sagamihara.
“Subsidies and costs available for large-scale renovations in Minami-ku”
“How to choose a large-scale renovation contractor in Minami-ku”
“Reasons why Kakeru Koumuten is chosen in Minami-ku”
These topics will definitely be helpful for owners and management associations
considering repairs or exterior renovations for 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
serving the Minami-ku area!
Reasons why Kakeru Koumuten is chosen for large-scale renovations in Minami-ku, Sagamihara
One reason why we are entrusted with large-scale renovations in Minami-ku
is that “Kakeru Koumuten has a base in Yokohama,” but
“Our unique approach to large-scale renovation work that cannot be imitated by other companies”
has received high praise from many customers.
“costs,” “quality,” and “plans” for exterior renovations of apartments, condominiums, and commercial facilities in Minami-ku,
1. Equipment specialized for exterior renovations
At Kakeru Koumuten Co., Ltd., we have organized the following warehouses and material storage areas to provide low-cost, high-quality exterior wall painting and waterproofing work for large-scale renovations.
We have established 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 renovations, allowing us to assemble scaffolding in-house.
By performing scaffolding work with our own scaffolding team instead of outsourcing, we can cut costs on scaffolding work and provide quick and flexible responses.
We have approximately enough scaffolding materials for 100 single-family homes!
Storage of Materials in Our Large Warehouse
We store paints and base repair materials used for exterior renovations.
By ordering a large quantity of materials at once, we can purchase materials at a lower cost!
Additionally, we always have stock available, allowing us to provide swift responses even in emergencies!
In-house Waste Separation
During large-scale renovations, various waste materials such as leftover paint, metal, and wood are generated.
Most contractors dispose of them all together, but by sorting and recycling waste materials, significant cost reductions 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担当者 (representative) does not change, communication can proceed smoothly.
We can fully handle everything from temporary scaffolding installation to exterior wall painting, substrate repairs, waterproofing work, and tile repairs with our own staff!
Those 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 asbestos supervisors and asbestos surveyors on staff, allowing us to handle asbestos-containing roofing materials and conduct preliminary surveys.
4. Warranty and Aftercare
Most large-scale repair works come with guarantees for almost all types of work, including “painting work,” “substrate repair work,” and “waterproofing work”!
Aftercare maintenance is available every year, and we send out notification DM each year.
5. Flexible and Quick 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 inspected 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 respond quickly to urgent requests and emergencies!
6. Human Resource Development
Our staff creates various models to improve their skills and conducts practical training.
Since different processing and techniques are required at each site, we regularly provide skill enhancement training to ensure that each staff member can respond appropriately.
We also educate on points to pay attention to and areas to check during each stage of large-scale repair work.
7. Consideration for Residents and Neighbors
During large-scale repair work, we not only notify residents and visit neighbors to greet and explain the work, but we also install bulletin boards at entrances to display the work schedule and announcements!
Additionally, we ensure that the manners of visitors are thoroughly educated to minimize any 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 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 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. Color Simulation for Exterior Wall Painting
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 making a change in image, we hope to help create a stylish appearance and increase occupancy rates!
Of course, we can also arrange paint samples for actual color confirmation.
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 wall.
By doing 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 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 the exterior renovation simulation, you can greatly reduce the risk of failure in image changes!
We hope that by renovating the appearance of your apartment or condominium, it will help increase occupancy rates.
Subsidies and Grants That May Be Applicable for Large-Scale Repairs in Minami-ku, Sagamihara
In Minami-ku, Sagamihara, there are potential subsidies available when carrying out renovation work on apartments and condominiums!
For more details, please contact our company or your local government! (As of July 2026)
Condominium Longevity Promotion Tax System (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 undergoing regular repairs? (PDF)
Kanagawa Prefecture Existing Housing Energy Efficiency 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, it is necessary to conduct energy efficiency renovation work using products such as windows, glass, and insulation materials that meet the insulation performance standards specified by the national government, targeting existing homes within the prefecture. Additionally, the home must ensure seismic performance, and a preliminary 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 efficiency 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 limited to “the maximum amount.”
For more details, please see here!
Child-Rearing Green Housing Support Project
Eligible Applicants
This program targets child-rearing households (households with children under 18) and young couple households, focusing on the new construction or purchase of homes with high energy efficiency performance, or energy-efficient renovations of existing homes. In the case of new construction, the builder or purchaser is eligible, while for renovations, the contractor placing the order is eligible for the subsidy.
Requirements
For new residential buildings, it is necessary to meet high energy-saving performance standards set by the government, such as ZEH level or higher. In the case of renovations, it is a condition to carry out construction that improves the energy-saving performance of the house, such as insulation renovations or the introduction of energy-saving equipment. In both cases, it is necessary to contract with a registered contractor and carry out the construction within the specified period.
Subsidy Limit Amount
For new construction, the maximum amount is between 400,000 yen and 1,600,000 yen per unit, depending on the performance classification of the house. For renovations, the maximum amount 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 limit amount.
Subsidy Rate
This program does not subsidize a certain percentage of the construction costs; 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 costs.
For more details, please see here!
Advanced Window Renovation Project
Eligible Participants
Owners of existing homes (single-family homes and apartment buildings) who are carrying out insulation renovation work on windows and openings are eligible. The actual application process for subsidies is carried out by registered “window renovation contractors” with the government, and the granted subsidies are fully refunded to the homeowners through discounts on construction costs.
Requirements
Eligible renovations include window improvements aimed at enhancing insulation performance, such as the installation of interior windows, replacement of exterior windows, and glass replacement in existing homes. It is necessary to use products that meet the insulation performance standards set by the government and to enter into a construction contract with a registered window renovation contractor. Additionally, the total subsidy amount must be 50,000 yen or more, and construction must start and be completed within the specified period.
Subsidy Limit Amount
The maximum subsidy amount is 2,000,000 yen per unit. Even if multiple windows are renovated, the total subsidy that can be received for the same residence is limited to this maximum amount.
Subsidy Rate
The subsidy rate is approximately equivalent to half of the construction costs. The actual subsidy amount is set at a fixed rate based on the type of window (interior window, exterior window, glass), size, and insulation performance classification, resulting in a total that is approximately 50% of the construction costs.
For more details, please see here!
Examples of Costs for Major Repairs
Here 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 Testimonials
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 roof, we proposed waterproofing for the entire exterior wall. Seven S is a clear waterproofing material for tile exterior walls. Although the cost is somewhat higher, its high waterproofing ability makes it a recommended waterproofing material when leaks are occurring from multiple points on the exterior wall. |
How to Choose a Large-Scale Renovation Contractor
There are many large-scale renovation contractors that cover Minami-ku, Sagamihara, and it can be confusing to decide which contractor to choose.
For this reason, when requesting renovations for apartments, condominiums, and buildings, let’s check the following four points:
● Extensive experience in large-scale renovations
● Confirm the presence of guarantees and aftercare services
● Obtain estimates from multiple contractors (at least three)
● Confirm whether they manage their own work
By confirming the above four points, you will be able to choose a reliable contractor.
Extensive Experience in Large-Scale Renovations
Large-scale renovation contractors often have websites that showcase their exterior renovation 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 a contractor with extensive experience in large-scale renovations.
It is also effective to look at skylight installation contractors using reviews from Google and review sites as references!
If there are many negative reviews or no reviews at all, it may be wise to refrain from hiring them.
Large-scale repair work involves not only the construction itself but also the potential for conflicts with residents and neighbors. Therefore, it is essential to prevent troubles in advance by reporting the progress of the work and sharing information about laundry, etc., on bulletin boards.
Kakeru Koumuten Co., Ltd. specializes in exterior 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 free of charge, 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 leak warranties.
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.
At Kakeru Koumuten Co., Ltd., we send out annual direct mail for after-sales 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, 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, warranties, and after-sales services may vary between contractors.
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 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 substrate repair work, which may not be obvious from the exterior, be sure to check whether the repair method is suitable for the condition of the substrate!
Check if it is 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 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.
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 having a company that has not actually met with the customer manage 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 Minami-ku, Sagamihara, please contact Kakeru Koumuten
Our company has handled many exterior wall renovations for condominiums and apartments in Minami-ku, Sagamihara. We are happy to assist not only with large-scale renovation work but also with partial repairs and leak repairs.
In case of emergencies such as leaks, we may also be able to provide temporary measures, so please feel free to consult with us!
Whether you want to “make it last long with one renovation,” “keep costs down as much as possible,” or “improve insulation performance because the indoors are hot,” we will provide optimal solutions for your specific requests and future repair plans.
We conduct everything from temporary scaffolding work to roofing and exterior wall painting completely in-house.
We are confident that we will not be outdone in terms of cost, quality, and organization compared to other companies 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 Minami-ku, Sagamihara
Asahi-cho, Minami-ku / Amazudai, Minami-ku / Shin-Isono, Minami-ku / Isobe, Minami-ku / Unomori, Minami-ku / Ohnodai, Minami-ku / Kamitsuruma, Minami-ku / Kamitsuruma Honmachi, Minami-ku / Kitasato, Minami-ku / Furubuchi, Minami-ku / Sakae-cho, Minami-ku / Sagami-Ono, Minami-ku / Sagami-Dai Danchi, Minami-ku / Sagami-Dai, Minami-ku / Sakuradai, Minami-ku / Shimomizo, Minami-ku / Shindo, Minami-ku / Aoinan, Minami-ku / Sobudai Danchi, Minami-ku / Sobudai, Minami-ku / Toma, Minami-ku / Nishi-Onuma, Minami-ku / Higashi-Onuma, Minami-ku / Higashi-Rinkan, Minami-ku / Futaba, Minami-ku / Bunkyo, Minami-ku / Matsugae-cho, Minami-ku / Misono, Minami-ku / Minami-Dai, Minami-ku / Toyo-cho, Minami-ku / Wakamatsu, Minami-ku
・When should large-scale renovations be carried out? An explanation of the optimal timing and the risks of postponement!
・Estimates are essential when carrying out 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!
・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 the reasons needed, 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 renovations in Minami-ku, Sagamihara, trust Kakeru Koumuten!
・For roof renovations in Minami-ku, Sagamihara, trust Kakeru Koumuten!
・For exterior wall painting in Minami-ku, Sagamihara, trust Kakeru Koumuten!
We welcome consultations via LINE as well◎
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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!
