目次
- 1 If you’re looking for a roof repair contractor in Hachioji, Tokyo, come to Kakeru Koumuten
- 1.1 How to Choose a Roof Repair and Leak Repair Contractor
- 1.2 About the costs for leak repair work
- 1.3 About Kakeru Koumuten
- 1.4 Customer Reviews
- 1.5 Service Areas
- 1.6 Possible Subsidies and Grants for Roof Repairs and Leak Repairs in Hachioji City, Tokyo
- 1.7 Features of Hachioji City, Tokyo
- 1.8 Summary
If you’re looking for a roof repair contractor in Hachioji, Tokyo, come to Kakeru Koumuten
Kakeru Koumuten is an exterior renovation company specializing in roof repairs and leak repairs.
We have handled numerous roof and leak repairs in Hachioji, Tokyo.
If you are considering a roof renovation, please feel free to consult with Kakeru Koumuten!
We respond broadly to sudden leaks after typhoons and roof repairs according to the age of the building.
For those in need in Hachioji, Tokyo,
we can respond as quickly as the same day, so please do not hesitate to contact us.
How to Choose a Roof Repair and Leak Repair Contractor
There are many contractors for leak repairs in Hachioji, and you may be unsure which one to choose.
Therefore, when requesting roof repairs and leak repairs, let’s check the following four points.
● Have extensive experience in roof and leak repairs
● Confirm the presence of warranties and aftercare services
● Obtain estimates from multiple contractors (at least three)
● Check if they conduct leak investigations and roof repairs in-house
By confirming the above four points, you will be able to choose a reliable contractor.
Have extensive experience in roof and leak repairs
Roof repair contractors often have websites where they showcase their construction achievements.
The construction results may explain the following items, so check if similar repairs have been performed on your home.
Repair details,the circumstances leading to the repair,materials used,repair costs,repair duration, etc.
Additionally, if the repair details are explained in detail with photos, it provides peace of mind as a reference when actually requesting repairs.
If you are concerned about whether the contractor you are about to hire will respond properly, choose a contractor with extensive repair experience.
Kakeru Koumuten Co., Ltd. specializes in roof and exterior repairs, so we receive many requests for leak repairs.
Kakeru Koumuten Co., Ltd.’s roof repair case studies in Hachioji City


Our Proposal
Since you requested a large roof and a lower roof while keeping costs down, we proposed the roof overlay (cover method) using Ridgeway!
Check for Warranty and After-Service
When choosing a leak repair contractor, make sure to check for warranty availability.
Leak repairs can recur even after being fixed once, so if you have to request repairs every time a leak reoccurs, it can lead to significant expenses.
For this reason, if the contractor offers a warranty period, repairs may be done for free within that warranty period.
The warranty period varies by contractor and type of work, but it is generally set between 1 to 10 years.
Emergency repairs or partial fixes often do not come with a leak warranty.
Additionally, some contractors offer after-service separate from the warranty, so be sure to check if the contractor you are considering has warranty andafter-service.
Kakeru Koumuten Co., Ltd. provides a leak warranty for all roof overlay and roof replacement work.
Similarly, for exterior walls, there is always a leak warranty for exterior wall overlay and replacement work as well as joint sealing work.
As part of our after-service, we send out annual direct mail, allowing for inspections every year.
Obtain estimates from multiple contractors (at least 3 companies)
When requesting roof renovations or leak repairs, be sure to obtain estimates from multiple contractors.
Even for the same repair work, the costs may vary between contractors, and the warranties and after-service may differ as well.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired contractor at a lower price, it is essential to obtain estimates from several companies.
If a leak occurs, it’s natural to feel rushed, but
first, perform temporary measures, and if construction is needed, taking your time to consider will lead to a satisfactory outcome!
Kakeru Koumuten is happy to assist with emergency measures for leaks!
Check if the company conducts leak investigations and roof repairs in-house
Leaks can sometimes be easily identified, while in other cases, pinpointing the cause can be quite challenging, requiring knowledge and experience.
Contractors that completely outsource roof repairs and leak repairs to subcontractors may lack the necessary knowledge and experience, leading to suggestions for repairs in the wrong areas or unnecessary leak repairs.
Moreover, having to investigate and then request a subcontractor adds extra time and costs.
By having the knowledge and experience to conduct the work in-house, responsible and cost-effective leak repairs can be carried out quickly.
Kakeru Koumuten conducts everything from leak investigations to construction in-house!
About the costs for leak repair work
The table below shows the average costs for areas prone to leaks.
|
Repair Details |
Average Cost |
|
Partial replacement of roofing materials |
¥10,000 – ¥20,000 |
|
Roof replacement (re-roofing) |
From 500,000 yen |
|
Roof overlay (cover method) |
From 400,000 yen |
|
Replacement and repair of ridge metal |
From 10,000 yen |
|
Skylight repair |
From 10,000 yen |
|
Repair of exterior walls and joints |
From 10,000 yen |
|
Repair of coping metal |
From 10,000 yen |
|
Waterproofing work for balconies and rooftops |
From 80,000 yen |
For detailed pricing, click here!!
About Kakeru Koumuten
Kakeru Koumuten Co., Ltd. is a remodeling company based in Aoba-ku, Yokohama, Kanagawa Prefecture, specializing in roofing, painting, and scaffolding work with complete in-house construction.
Since we can assemble temporary scaffolding and perform roof repairs in-house,
we can provide quick leak repairs at a reduced cost.
Company Introduction


● We store scaffolding materials!
Since we can set up temporary scaffolding in-house, we can perform roof repairs quickly.


● We store materials and tools related to roofing and painting work!
We have all the necessary components for leak repairs, allowing us to respond quickly!
Customer Reviews
Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo Metropolis.
Hachioji City, Tokyo Area List
Akatsuki-cho, Hachioji City / Asahi-cho, Hachioji City / Higashi-cho, Hachioji City / Ishikawa-cho, Hachioji City / Izumi-cho, Hachioji City / Inume-cho, Hachioji City / Ueno-cho, Hachioji City / Uchikoshi-cho, Hachioji City / Uzuki-cho, Hachioji City / Uzunuki-cho, Hachioji City / Ume坪町, Hachioji City / Ura Takao-cho, Hachioji City / Oiwake-cho, Hachioji City / Otsuka, Hachioji City / Ofuna-cho, Hachioji City / Otani-cho, Hachioji City / Ooyoko-cho, Hachioji City / Owada-cho, Hachioji City / Oko-cho, Hachioji City / Kashima, Hachioji City / Kazume-cho, Hachioji City / Katakura-cho, Hachioji City / Kanoya-cho, Hachioji City / Kamii-bunakata-cho, Hachioji City / Kamio-cho, Hachioji City / Kamikawa-cho, Hachioji City / Kamiyuzuki, Hachioji City / Kawaguchi-cho, Hachioji City / Kawa-cho, Hachioji City / Kitano-dai, Hachioji City / Kitano-cho, Hachioji City / Kinuoka-cho, Hachioji City / Kiyokawa-cho, Hachioji City / Kurata-cho, Hachioji City / Kuboyama-cho, Hachioji City / Koshino, Hachioji City / Kohiki-cho, Hachioji City / Komiya-cho, Hachioji City / Koyasu-cho, Hachioji City / Sairi-cho, Hachioji City / Sanada-cho, Hachioji City / Shimo-onkata-cho, Hachioji City / Shimo-yuzuki, Hachioji City / Shiroyama-te, Hachioji City / Shinmachi, Hachioji City / Suwa-cho, Hachioji City / Sennin-cho, Hachioji City / Taira-cho, Hachioji City / Takao-cho, Hachioji City / Takakura-cho, Hachioji City / Takizaka-cho, Hachioji City / Tachi-cho, Hachioji City / Tamachi, Hachioji City / Tanuki-cho, Hachioji City / Dai-cho, Hachioji City / Daisaku-ji-cho, Hachioji City / Terada-cho, Hachioji City / Teramachi, Hachioji City / Tenjin-cho, Hachioji City / Tsukisato-cho, Hachioji City / Tobuki-cho, Hachioji City / Nakacho, Hachioji City / Nakano-kami-cho, Hachioji City / Nakano-sannou, Hachioji City / Nakano-cho, Hachioji City / Nakayama, Hachioji City / Nagakubo-cho, Hachioji City / Nagabou-cho, Hachioji City / Nanakuni, Hachioji City / Namiki-cho, Hachioji City / Narahara-cho, Hachioji City / Nanyo-dai, Hachioji City / Nishi-asakawa-cho, Hachioji City / Nishi-katakura, Hachioji City / Nishi-terakata-cho, Hachioji City / Nibun-kata-cho, Hachioji City / Hazama-cho, Hachioji City / Hachiman-cho, Hachioji City / Hatsuzawa-cho, Hachioji City / Higashi-asakawa-cho, Hachioji City / Higashi-nakano, Hachioji City / Hyoei, Hachioji City / Hiyoshi-cho, Hachioji City / Hiraoka-cho, Hachioji City / Fujimi-cho, Hachioji City / Bessho, Hachioji City / Horinouchi, Hachioji City / Hongou-cho, Hachioji City / Honmachi, Hachioji City / Matsugaya, Hachioji City / Matsuki, Hachioji City / Maruyama-cho, Hachioji City / Misaki-cho, Hachioji City / Mitsui-dai, Hachioji City / Midori-cho, Hachioji City / Minami-asakawa-cho, Hachioji City / Minami-osawa, Hachioji City / Minami-shinmachi, Hachioji City / Minami-cho, Hachioji City / Minamino, Hachioji City / Miyashita-cho, Hachioji City / Miyama-cho, Hachioji City / Myoujin-cho, Hachioji City / Mejiro-dai, Hachioji City / Moto-hachioji-cho, Hachioji City / Moto-hongou-cho, Hachioji City / Moto-yokoyama-cho, Hachioji City / Yagi-cho, Hachioji City / Tani-no-cho, Hachioji City / Yamada-cho, Hachioji City / Yari-mizu, Hachioji City / Youka-cho, Hachioji City / Yokokawa-cho, Hachioji City / Yokoyama-cho, Hachioji City / Yotsuya-cho, Hachioji City / Manmachi, Hachioji City
Possible Subsidies and Grants for Roof Repairs and Leak Repairs in Hachioji City, Tokyo
In Hachioji City, Tokyo, there may be subsidies available for leak repairs and roof repairs.
For details, please contact our company or your local government.
Hachioji City Living Environment Improvement Subsidy
In Hachioji City, there is a system that subsidizes part of the costs for renovation work (remodeling) to ensure a safe and secure living environment for homeowners in the city when registered contractors in the city carry out such work.
Application Acceptance Period
* Applications will close once the budget amount is reached.
Eligible Construction Work for Subsidy
Must meet all of the following criteria:
- Construction work carried out by a registered contractor in the city recommended by a designated organization (excluding earthquake shelter and disaster prevention bed installations, water stop board installation work for condominiums, and LED renovation work for common areas of condominiums)
* Please check the list of registered contractors in the city on this page. - Work for which a construction contract has not been concluded at the time of application (contracts must be concluded after the grant decision)
- Work that will be completed by the end of February 2026
Please select one of the following types of assistance and apply.
* For wooden house earthquake reinforcement renovation work only, multiple types can be used in combination (for details, please refer to the subsidy list above).
| Seismic Renovation Work for Wooden Houses | ・Seismic renovation work based on the seismic reinforcement design document | |
| Simple Seismic Renovation Work for Wooden Houses | ・Reinforcement of columns, beams, and walls ・Reinforcement of the foundation ・Replacing roofing material from heavy to lightweight |
|
| Installation of Seismic Shelters and Disaster Prevention Beds | ・Installation of seismic shelters ・Installation of disaster prevention beds ・Installation of disaster prevention bed frames |
|
| Typhoon Countermeasure Renovation Work | ・Securing and replacing roof tiles ・Installation or replacement of shutters and storm doors on windows |
|
| Installation Work of Water Stop Boards for Condominiums | ・Installation of water stop boards at entrances and other locations | |
| Environment | Energy Conservation Renovation Work | ・Insulation renovation of windows, floors, ceilings, exterior walls, and roofs (excluding heat shielding) ・Renovation to high thermal insulation bathrooms |
| Long Lifespan Renovation Work | ・Painting of roofs and exterior walls ・Roof replacement ・Floors (all materials constituting the floor) |
|
| Installation of Workspaces and Child-Rearing Environment Improvement Renovation Work | ・Change of floor plan ・Interior construction work ・Kitchen facing and enlarging (only for child-rearing environment improvement) |
Eligible Participants
- Owners of eligible housing (including tenants in the case of barrier-free renovation work or installation of seismic shelters and disaster prevention beds in rental housing)
- Individuals who have an address in the eligible housing or are expected to have an address and will continue to reside there after the completion of renovation work
Examples of Work Not Eligible for Subsidies
The following items are not eligible for subsidies (unless they are related to eligible renovation work)
- Renovation work on exterior structures
- Installation of equipment such as solar panels and water heaters
- Repair and restoration work on damaged areas
Subsidy Amount
| Category | Type of Assistance | Subsidy Rate | Maximum Amount |
|---|---|---|---|
| Welfare for the Elderly | Barrier-free renovation work | Within 20% of eligible construction costs | 200,000 yen *Multiple applications can be made within the fiscal year as long as they are within the limit |
| Disaster Prevention | Seismic renovation work for wooden houses | Within 2/3 of eligible construction costs | 1,000,000 yen |
| Simple seismic renovation work for wooden houses | Within 50% of eligible construction costs | 250,000 yen | |
| Installation of seismic shelters and disaster prevention beds | Within 50% of eligible construction costs | 200,000 yen | |
| Typhoon prevention renovation work | Within 20% of eligible construction costs | 100,000 yen | |
| Installation work for water stop boards in condominiums | Within 50% of eligible construction costs | 500,000 yen | |
| Environment | Energy-saving renovation work | Within 20% of eligible construction costs | 150,000 yen |
| Longevity renovation work | Within 20% of eligible construction costs | 50,000 yen | |
| Installation of workspaces and renovation work for child-rearing environments | Within 20% of eligible construction costs | 100,000 yen | |
| LED renovation work for common areas in condominiums | Within 50% of eligible construction costs | 500,000 yen |
Features of Hachioji City, Tokyo
Hachioji City is located in the southwestern part of Tokyo and features a wide range of areas from nature-rich mountainous regions to urban areas. It is the municipality with the largest area in Tokyo, offering diverse attractions.
The climate is relatively mild throughout the year, but due to its inland location, it has characteristics of an inland climate, with hot summers and harsh cold winters. In particular, snowfall can be observed in the suburban mountainous areas during winter.
Transportation access is very convenient, with the JR Chuo Line, Yokohama Line, Hachiko Line, and Keio Line running through the city. It takes about 35 minutes to reach Shinjuku Station in central Tokyo via the JR Chuo Line express train, making access excellent. Additionally, there is an interchange for the Chuo Expressway, providing comfortable travel by car.
Famous tourist spots include “Mount Takao,” known as one of the Kanto region’s sacred mountains, which attracts hikers and climbers year-round. There are also many historical sites, such as “Hachioji Castle Ruins,” where visitors can experience history and culture. The city center is home to cultural facilities like the “Hachioji Yume Art Museum” and the “Tokyo Fuji Art Museum,” offering a wealth of diverse attractions.
Our company has undertaken numerous roofing projects in the attractive city of Hachioji, Tokyo. In addition to roof overlay work and roof replacement, we are also happy to assist with partial roof repairs such as leak repairs and other repairs! Please feel free to consult us about any sudden troubles.
Summary
Our company handles many roofing projects in Hachioji.
We are pleased to assist with roof overlay work, roof replacement, leak repairs, and other repairs!
“I just need a temporary fix for the leak”
“I want to repair my broken roof”
“I want to implement overall leak prevention measures for the building”
We will provide the best solutions for your specific requests.
Estimates and inspections are, of course, free!
We carry out everything from temporary scaffolding work to roofing and exterior painting completely in-house.
We are confident that our costs, quality, and efficiency in exterior work are unmatched compared to other companies!
We welcome competitive estimates!
We look forward to your inquiries. Thank you very much.
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!




