If you’re looking for a roof repair contractor in Kokubunji City, Tokyo, come to Kakeru Koumuten
Kakeru Koumuten is a remodeling company specializing in roof repairs and leak repairs.
We have handled numerous leak repairs and roof repairs in Kokubunji City, Tokyo.
If you are considering a roof renovation, please feel free to consult with Kakeru Koumuten!
We handle a wide range of issues, including sudden leaks that occur after typhoons and roof repairs based on the age of the building.
For those in Kokubunji City, we offer same-day service, so please don’t hesitate to contact us.
How to Choose a Leak Repair Contractor
There are many contractors for leak repairs in Kokubunji City, and it can be confusing to decide which one to choose.
Therefore, when requesting roof repairs and leak repairs, let’s check the following four points.
● Have extensive experience in roof repairs 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.
Extensive Experience in Roof Repairs and Leak Repairs
Roof repair contractors often have websites that showcase their construction achievements.
The construction results may explain the following items, so let’s check if similar repairs have been done for your home.
Repair details,the process leading to the repair,materials used,repair costs,repair duration, etc.
Additionally, having detailed explanations of the repair contents with photos can provide 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 properly, choose a contractor with extensive repair experience.
Kakeru Koumuten Co., Ltd. specializes in roof and exterior repairs, and we receive many requests for rain leak repairs.
Kakeru Koumuten Co., Ltd.’s rain leak repair case studies in Kokubunji City
約2週間
About 2 weeks
We received an inquiry from a customer living in Kokubunji City, Tokyo, stating, “I was pointed out about the deterioration of my roof by a contractor working on a roof project in the neighborhood, and I’m concerned about the roof’s deterioration!”
Our Proposal
Since the customer wished to keep costs as low as possible, we proposed the roof overlay (cover method) using Ridgeway, which offers excellent cost performance.
Check for Warranty and After-Service Availability
When choosing a leak repair contractor, make sure to check for warranty availability.
Leak repairs can recur even after being fixed, so if you have to request repairs every time a leak reoccurs, it can lead to significant expenses.
For this reason, if you choose a contractor that offers a warranty period, you may be able to get repairs done for free within that warranty period.
Warranty periods vary by contractor and type of work, but typically range from 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 options.
Kakeru Koumuten Co., Ltd. provides a leak warranty for all roof overlay and roof replacement work.
Similarly, for exterior walls, a leak warranty is included 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 yearly inspections.
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 can 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 repair contractor at a lower price, obtaining estimates from multiple companies is essential.
If a leak occurs, it’s natural to feel rushed, but
first perform temporary measures, and when considering construction, taking your time will lead to a regret-free project!
Kakeru Koumuten Co., Ltd. is happy to assist with emergency leak repairs as well!
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 repairs in the wrong areas or suggesting 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 repairs in-house, responsible and cost-effective leak repairs can be carried out swiftly.
Kakeru Koumuten Co., Ltd. handles everything from leak investigations to construction in-house!
About the Costs of Leak Repair Work
The table below shows the average costs for areas prone to leaks.
|
Repair Content |
Average Cost |
|
Partial Replacement of Roofing Material |
¥10,000 – ¥20,000 |
|
Roof Replacement (Re-roofing) |
From ¥500,000 |
|
Roof Overlay (Cover Method) |
From 400,000 yen |
|
Replacement and Repair of Roof Ridge Flashing |
From 10,000 yen |
|
Skylight Repair |
From 10,000 yen |
|
Repair of Exterior Walls and Joints |
From 10,000 yen |
|
Repair of Cap Flashing |
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 assemble our own temporary scaffolding and can perform roof repairs,
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 quickly perform roof repairs.


● 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 Area
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo Metropolis.
Contact page for Kakeru Koumuten Co., Ltd. is here!
List of Areas in Kokubunji City
Kokubunji City Izumicho / Kokubunji City Kitamachi / Kokubunji City Shinmachi / Kokubunji City Takagicho / Kokubunji City Tokura /
Kokubunji City Naito / Kokubunji City Namikicho / Kokubunji City Nishikoiwa / Kokubunji City Nishimachi / Kokubunji City Nishimotocho / Kokubunji City Hikarucho / Kokubunji City Higashikoiwa / Kokubunji City Higashitokura / Kokubunji City Higashimotocho / Kokubunji City Hiyoshicho / Kokubunji City Fujimoto / Kokubunji City Honda / Kokubunji City Honmachi / Kokubunji City Minamimachi
Subsidies and Grants for Leak Repairs in Kokubunji City, Tokyo
In Kokubunji City, Tokyo, the following subsidies may be available for leak repairs. For details, please contact our company or the respective local government. (As of February 2025)
Seismic Retrofit Subsidy Program
- Eligibility: Residential buildings deemed to lack seismic resistance based on the results of a “seismic diagnosis.”
- Subsidy Details:
- Seismic Retrofit Work: 80% of construction costs (up to 1,000,000 yen)
Features of Kokubunji City, Tokyo
Kokubunji City is located in the central part of the Tama region of Tokyo, and it is an attractive city where rich nature and historical heritage harmonize. The climate is mild throughout the year, allowing you to enjoy seasonal scenery.
In terms of transportation access, the city has “Kokubunji Station” on the JR Chuo Line and “Nishi-Kokubunji Station” served by the JR Musashino Line and Chuo Line, making access to the city center very convenient. It takes about 25 minutes from Shinjuku Station to Kokubunji Station, and about 40 minutes from Tokyo Station.
As for tourist attractions, there is the “Musashi Kokubunji Ruins,” which was established in the Nara period and designated as a national historic site, attracting many history enthusiasts. Additionally, the “Tonogayato Garden,” where you can enjoy beautiful gardens throughout the seasons, and the “Otaka no Michi Water Garden,” where you can stroll along clear spring water, are also popular.
There is also a free rest facility that doubles as a tourist information center called “Historic Station,” providing a comfortable environment for leisurely strolls.
Our company has undertaken many roofing projects in the charming Kokubunji City, Tokyo. In addition to roof overlay work and roof replacement, we are happy to assist with partial roof repairs such as leak repairs and other repairs! Please feel free to consult us for any sudden troubles!
Summary
Our company handles many roofing projects in Kokubunji City.
We are happy to assist with roof overlay work, roof replacement, leak repairs, and other partial roof repairs!
“Just 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 we will not be outdone in terms of cost, quality, and organization compared to other companies for exterior work!
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!




