If you are looking for
a large-scale renovation contractor
in Ayase City, come to Kakeru Koumuten
Kakeru Koumuten is a complete in-house contractor capable of handling everything from temporary scaffolding installation to roofing, waterproofing, and exterior painting.
We have undertaken numerous large-scale renovations and exterior renovations for apartments, condominiums, and commercial facilities in Ayase City.
“Subsidies and costs available for large-scale renovations in Ayase City”
“How to choose a large-scale renovation contractor in Ayase City”
“Reasons why Kakeru Koumuten is chosen in Ayase City”
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 renovations is
“multiple estimates”!
Let’s obtain at least 3 estimates from large-scale renovation companies that cover Ayase City!
Reasons why Kakeru Koumuten is chosen for large-scale renovations in Ayase City
One reason why we can be entrusted with large-scale renovations in Ayase City is that
“Kakeru Koumuten has a base in Kanagawa Prefecture,” but
“Our unique approach to large-scale renovation projects 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 Ayase City,
1. Equipment specialized for exterior renovations
At Kakeru Koumuten Co., Ltd., we have prepared the following warehouses and material storage areas to provide low-cost, high-quality exterior wall painting and waterproofing work for large-scale renovations.
We have established five bases centered around Yokohama 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 not outsourcing scaffolding work and using our own scaffolding team, we can cut costs on scaffolding work and provide quick and flexible responses.
We have approximately enough scaffolding materials for 100 single-family homes!
Storage of Materials in Our Large Warehouse
We store paints and base repair materials used for exterior renovations.
By ordering a large quantity of materials at once, we can purchase materials at a lower cost!
Additionally, we always have stock available, allowing us to 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.
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 responsible parties, such as sales representatives and construction managers, do not change, 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!
Those with specialized knowledge and experience will conduct inspections and actual construction for each process!
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 technicians on staff, giving us confidence in our construction techniques.
We are capable of handling large-scale roofing projects for factories and other facilities!
Qualified personnel for asbestos management and asbestos surveyors are also 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 by utilizing 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 or 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 depending on the site, we regularly provide skill enhancement training so that each staff member can respond appropriately.
We also educate our team on points to be careful about and areas to check at each stage of large-scale repair work.
7. Consideration for Residents and Neighbors
During large-scale repair work, we not only notify residents and greet neighbors, but also install bulletin boards at entrances to display project schedules and announcements!
Additionally, we ensure that all entrants are educated on proper manners to minimize any inconvenience to residents and neighbors.
8. Strict Quality Control
Each stage of the work 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.
During exterior 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 directly from our company 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 we create can be done using actual photos of your 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 enhance the 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 also 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
The risk of failure in image changes can be greatly reduced with exterior renovation simulations!
We hope that renovating the appearance of your apartment or condominium will help increase occupancy rates.
Possible Subsidies and Grants for Large-Scale Repairs in Ayase City
In Ayase City, 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 Long-Life 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↓
Large-scale repairs to condominiums will reduce property tax! (PDF)
Is your condominium regularly maintained? (PDF)
Kanagawa Prefecture Existing Housing Energy Conservation Renovation Subsidy
Eligibility
The eligible recipients of this subsidy are owners of existing homes in Kanagawa Prefecture who reside in those homes on a daily basis. The eligible properties 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 with insulation performance specified by the national government, such as windows, glass, and insulation materials. 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 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 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
Eligibility
This program targets child-rearing households (households with children under 18) and young couples, focusing on the construction or purchase of new homes with high energy conservation performance, or energy-efficient renovations of existing homes. For new constructions, 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 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 or the introduction of energy-saving equipment. In both cases, it is necessary to contract with a registered business and carry out the construction within the specified period.
Subsidy Upper Limit
For new constructions, the 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, it is not possible to receive subsidies exceeding this upper limit.
Subsidy Rate
This program does not provide a subsidy based on a certain percentage of the construction cost; instead, a predetermined “fixed subsidy” is provided for each type of work and performance classification. Therefore, in effect, the government covers part of the construction costs.
For more details, please click here!
Advanced Window Renovation Project
Eligible Participants
Homeowners of existing houses (single-family homes and apartment buildings) who are carrying out insulation renovation work on windows and openings are eligible. The actual subsidy application process is conducted 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 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 the work must start and be completed within the specified construction period.
Subsidy Upper Limit
The upper limit for subsidies is 2,000,000 yen per unit. Even if multiple windows are renovated, the total subsidy that can be received for the same house is limited to this upper limit.
Subsidy Rate
The subsidy rate is approximately equivalent to half of the construction costs. The actual subsidy amount is set at a fixed rate based on the type of window (interior window, exterior window, glass), size, and insulation performance classification, resulting in a total that is approximately 50% of the construction costs.
For more details, please click here!
Examples of Costs for Major Repairs
These are examples of costs for each repair work!
（度合いにより変動します）
（度合いにより変動します）
Resin Mortar
(Varies depending on the degree)
(Varies depending on the degree)
※Costs and warranty periods vary depending on the shape, quantity, condition of the substrate, and type of materials.
If you would like a detailed estimate, please feel free to contact us!
Estimates are completely free of charge.
Customer Feedback
Case Study of Exterior Renovation Work on a Mixed-Use Building
| Construction Details |
| Partial replacement of damaged tiles Painting of ancillary parts (pipes, water cut-off) Roof waterproofing work (urethane waterproofing) Exterior wall tile waterproofing (Seven S) Sealing work around sashes Repair of exterior wall tile mortar joints Removal of ivy |
| New Materials Used |
| Exterior wall tiles: Kunishiro tiles Painting of ancillary parts: Radical silicone paint Roof waterproofing: High-strength urethane (Sarasene A) Exterior wall tile waterproofing: Seven S |
| Price Range |
| 4,000,000〜4,100,000 yen |
| Construction Period |
| 45 days |
| Process Leading to Construction |
| Due to leaks occurring from several areas such as the exterior walls and the rooftop, we proposed waterproofing for the entire exterior wall. The Seven S is a clear waterproofing material for tile exterior walls, and while the cost is somewhat high, its waterproofing performance is excellent. Therefore, if leaks are occurring from multiple areas of 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 Ayase City, and it can be confusing to decide which one to choose.
For this reason, when requesting renovations for apartments, condominiums, or buildings, be 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 track record in exterior renovations.
Additionally, if they provide detailed explanations of 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 adequately, choose one with extensive experience in large-scale renovations.
It is also effective to refer to reviews on Google and review sites when looking for 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 neighboring inhabitants. 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 work, and we receive many requests for exterior renovations of apartments and condominiums.
Check for warranties and after-sales maintenance
When choosing a large-scale repair company, make sure to check for warranties.
If any issues such as leaks occur after the work is completed, having a leak warranty from the contractor ensures that repairs can be made at no cost, providing peace of mind!
Additionally, companies that offer a warranty demonstrate confidence in their work, which can serve as a criterion for selecting a contractor!
The warranty period varies by contractor and the nature of the work, but it typically ranges 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.
At Kakeru Koumuten Co., Ltd., we send out annual direct mail as part of our after-sales maintenance, allowing for yearly inspections.
For simple repairs like partial sealing, we provide services free of charge.
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 obtain estimates from at least three companies and compare their estimates and reports!
Even for the same type of work, repair costs, warranties, and after-sales services may differ between contractors.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at a lower cost, 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 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, since it may not be obvious from the exterior, be sure to confirm 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 types of construction such as “substrate repair work,” “exterior wall painting,” “waterproofing work,” and “pipe replacement!”
The content of the plan will vary depending on the actual state of deterioration and the customer’s wishes.
If a contractor completely outsources to subcontractors, they may lack knowledge and experience, leading to proposals for repairs in the wrong areas or unnecessary work.
This can result in additional time and costs as you have to investigate and then request work from 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 carries out 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 Ayase City, please contact Kakeru Koumuten
Our company has handled many exterior wall renovations for condominiums and apartments in Ayase City. 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 also be able to provide emergency measures, so please feel free to consult with us!
“I want it to last long with one renovation,” “I want to keep costs down as much as possible,” “I want to improve insulation performance because the indoors are hot“, we will provide optimal solutions for your specific requests and future repair plans.
We carry out everything from temporary scaffolding work to roofing and exterior wall painting completely in-house.
We are confident that we will not be outdone in terms of cost, quality, and planning compared to other companies in exterior work!
We welcome competitive estimates as we are confident in our work!
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
List of Areas in Ayase City, Kanagawa Prefecture
Ayase City Atsugi Air Base / Ayase City Oogami / Ayase City Ochiai Minami / Ayase City Ochiai Kita / Ayase City Kamitodana / Ayase City Kamitodana Naka / Ayase City Kamitodana Minami / Ayase City Kamitodana Kita / Ayase City Kozono / Ayase City Kozono Minami / Ayase City Tatekawa / Ayase City Terao Kamita / Ayase City Terao Naka / Ayase City Terao Nishi / Ayase City Terao Minami / Ayase City Terao Kita / Ayase City Terao Dai / Ayase City Terao Honcho / Ayase City Hayakawa / Ayase City Hayakawa Shiroyama / Ayase City Fukaya / Ayase City Fukaya Kami / Ayase City Fukaya Naka / Ayase City Fukaya Minami / Ayase City Mototatekawa / Ayase City Yoshioka / Ayase City Yoshioka Higashi / Ayase City Ayase Nishi
・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 points for comparison and precautions!
・Five common troubles in large-scale renovations of condominiums! A thorough explanation of causes and prevention measures!
・What is waterproofing work in large-scale renovations? A thorough explanation of its role, signs of deterioration, and precautions!
・Insufficient funds for large-scale renovations… An explanation of how to deal with funding shortages and preparations you can do right now!
・What is surface repair, which is important in large-scale renovations? A thorough explanation of 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 to avoid failures!
・What is tile repair, which is important in large-scale renovations? An explanation of signs of deterioration, types of work, and cost averages!
・What is exterior wall painting, which is important in large-scale renovations? A thorough explanation of its necessity, signs of deterioration, and cost averages!
・For exterior renovations in Ayase City, Kanagawa Prefecture, trust Kakeru Koumuten Co., Ltd.!
・For roof renovations in Ayase City, Kanagawa Prefecture, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall painting in Ayase City, Kanagawa Prefecture, trust Kakeru Koumuten Co., Ltd.!
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!
