Cost and Procedure for Replacing Entrance and Service Doors (Cover Method) | Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama
Kakeru Koumuten Co., Ltd. is at your service!
We handle not only single-family homes but also rental properties such as condominiums and apartments.
If you have concerns about your entrance door, such as “It’s hard to lock,” “The door is heavy or doesn’t close well,” “Drafts come in,” or “It looks old,” please feel free to consult us.
Door & Installation Included
From ¥300,000
Flush door
From ¥100,000
With the cover method
Completed in 1 Day
Entrance Door Replacement Costs
This is a standard estimate for replacement work that includes the entrance door unit (frame, door, lock, handle), removal of the existing door and parts, installation of a new frame, caulking, and disposal of waste materials.
This is the price for the cover method, which involves placing a new frame and door over the existing door frame. Costs may vary depending on the type of door (single swing, main-and-side-leaf, sliding), insulation performance grade, options such as light windows, ventilation features, electric locks, and smart keys.
Frame-Overlay Costs by Door Type
This is the most common type with a single door. It is widely used in both single-family homes and condominiums, and it offers a variety of product options, making it easier to keep costs down. You can also choose options with light windows or ventilation types.
Brands / Products
LIXIL “Rishento”
This type opens by sliding sideways. It does not require space for opening and closing, making it easier for wheelchairs, strollers, and large luggage to enter and exit. It may also be possible to change from a swing door to a sliding door.
Brands / Products
LIXIL “Rishento Entrance Sliding Door”
This type features a smaller side leaf or a fixed side panel next to the main door. It accommodates wide entrances, allowing for easy access when moving large furniture by opening the side leaf as well.
Brands / Products
YKK AP “Door Remo Entrance Door”
This type combines a highly insulated door with an electric lock that can be locked and unlocked using a remote control or card key. It simultaneously addresses cold drafts at the entrance and enhances security by helping prevent the door being left unlocked.
Brands / Products
YKK AP “Door Remo Insulated Door + Smart Control Key”
Budget & Back Door Options
This is a simple flush door with a flat surface. It is recommended for cost-conscious plans when you want to update the appearance and fix key issues at the entrance of a rental apartment. It can be replaced in one day using the cover method.
Brands / Products
LIXIL “Rishento” and other standard grades
This is a replacement of the service door that connects to the kitchen or washroom. Replace an old, heavy service door that is difficult to lock with a new door that provides light, ventilation, and security. It can also be installed using the cover method, just like the entrance door.
Brands / Products
LIXIL “Rishento Service Door”
Other Methods & Costs
This method involves applying a decorative sheet with a wood grain or metallic finish to the surface of the existing door, giving it a fresh appearance without replacing it. It is suitable for cases where removal and disposal are unnecessary, and where fading or small scratches are a concern. However, it cannot resolve issues with locks or fittings.
Main Material
3M “DI-NOC EXR Series”
This method involves replacing only the door itself while leaving the door frame intact. It is limited to cases where a door from the same manufacturer and series can be obtained. It is suitable when there is no deterioration of the frame and only the door itself is damaged.
Main Manufacturers
LIXIL / YKK AP / Sankyo Aluminum
This method involves partially breaking the surrounding wall, removing the existing frame, and installing a new frame. It is chosen when you want to change the size or position of the door, or when the existing frame has significant corrosion or distortion that prevents the cover method from being used. Repairs to the exterior and interior are necessary, and the construction period is about 2 to 3 days.
Main Manufacturers
LIXIL / YKK AP / Sankyo Aluminum
※ The costs are reference prices based on standard construction conditions. A formal estimate will be provided after an on-site inspection.
※ The cover method may not be applicable if there is significant distortion or corrosion in the existing frame, or depending on the shape of the frame.
※ If you live in a fire prevention area or quasi-fire prevention area, a fire-rated entrance door (fire door) may be required. Since the options and costs for products may vary, we will confirm this during the on-site inspection.
※ Options such as electric locks, smart keys, light windows, ventilation functions, and intercom connections will be estimated separately depending on the product.
※ Since the entrance doors of apartments are considered common areas, there may be regulations regarding the possibility of replacement, design, and construction hours as stipulated in the management rules.
※ Replacing the entrance door with one that has high thermal insulation performance may be eligible for subsidies from the national or local government. There are requirements regarding eligible products, performance, and application timing depending on the system, which will be explained during the estimate.
If you send us photos taken from the indoor and outdoor sides of the entrance door, along with the outer dimensions of the door frame (width and height) and the type of door (single, main-and-side-leaf, sliding), we may be able to provide a rough estimate.
Replacing entrance doors and service doors with high thermal insulation performance may qualify for subsidies from the national and local governments. The main programs available in the areas served by Kakeru Koumuten Co., Ltd. in Tokyo and Kanagawa Prefecture are as follows. National and prefectural programs may be combined, and if conditions are met, construction costs can be reduced.
Replacement with insulated doors (cover method or removal-and-replacement method) is eligible. It may be a condition to carry out the thermal renovation of windows simultaneously. Application by registered contractors and the use of high-performance products registered as eligible are required.
Subsidy for Thermal Renovation of Existing Homes
High thermal insulation windows and doors of existing homes in Tokyo are eligible. It may be possible to combine this with the national “Advanced Window Renovation Project,” significantly reducing out-of-pocket expenses if conditions are met.
Subsidy for Energy Conservation Renovation of Existing Homes
Thermal renovation of openings exposed to the outside (windows, entrance doors, etc.) is eligible. Existing homes in the prefecture are eligible, and it may be possible to combine this with national subsidies. There may also be unique programs from municipalities such as Yokohama City and Kawasaki City.
※The above is an estimate for fiscal year 2026. The subsidy amount, grant rate, application period, eligible products, and the possibility of combination are determined by each program and may change depending on the fiscal year and budget situation.
※Even when combining national and prefectural programs, the total amount of subsidies will not exceed the construction costs.
※The amount for the assistance with the entrance door is determined by the insulation performance and the product size classification. Whether or not you can utilize subsidies depends on your region, housing, and construction details, so we will provide guidance during the estimate.
What Is Frame-Overlay Replacement?
The cover method involves installing a new frame over the existing door frame without removing it. Since there is no need to break walls, exterior walls, or tiles, it does not require extensive construction and can renew your entrance in just one day. This is currently the most commonly adopted method for replacing entrance doors.
Advantages of the cover method
- Construction takes one day: Work starts in the morning, and you can lock up with the new door by evening.
- No wall demolition: There is no need for repairs to the exterior walls, tiles, or interior, which helps reduce costs and construction time.
- Improved insulation and security: You can update to the latest features such as insulated doors and double locks with dimple keys.
- Fresh design: Choose from a wide variety of designs, such as wood grain or metal finishes, changing the appearance significantly.
- Possibility of changing to sliding doors: Depending on the product, it may also be possible to change from a hinged door to a sliding door.
Since a new frame is added, the width and height of the opening will be a few centimeters smaller than the existing one. In most cases, this does not hinder entry and exit, but we will explain the finished dimensions during the on-site inspection.
Entrance Door Replacement Projects
We replaced a wood grain entrance door that had faded and was difficult to lock with a black insulated door featuring a light window using the cover method. Since the existing frame was retained and a new frame was placed over it, the construction was completed in one day without breaking the exterior walls or tiles.
When to replace your entrance door
The timing for replacing an entrance door depends on usage conditions and environmental factors such as sunlight, but a general guideline is about 20 to 30 years after installation.
Over many years of use, issues such as deterioration of the lock and hinges, problems with the door closer, difficulty closing due to warping or distortion of the door, and drafts caused by the deterioration of seals may occur. If multiple symptoms are observed, it is time to consider not just replacing parts, but also replacing the door itself.
If you notice any of the following symptoms, please consider repair or replacement.
- The door is difficult to lock, or the key is difficult to insert or remove.
- The door feels heavy, does not close properly, or makes a loud noise when closing.
- There are gaps between the door and frame that let in drafts or light.
- The surface has noticeable fading, peeling, rust, or dents.
- Oil is leaking from the door closer, or the closing speed is abnormal.
- The old lock raises security concerns, such as a disc cylinder vulnerable to picking.
Locks, hinges, door closers, and seals may need replacing before the door itself. Depending on the symptoms, replacing parts alone may solve the problem. We will recommend an appropriate solution during the on-site survey.
Ignoring difficulty locking the door can lead to problems such as being unable to lock it when leaving or unlock it when returning home. If you notice anything unusual, consider an inspection or replacement promptly.
Get an Entrance Door Quote
Send us photos and dimensions of your door, and we may be able to provide a preliminary estimate.
Features of Modern Entrance Doors
Modern entrance doors offer significant improvements in thermal insulation, security, and ease of use. When replacing your door, consider the following features as well as the design.
- Insulated doors: Insulation inside the door reduces the transfer of cold and heat through the entrance.
- Electronic locks and smart keys: Lock and unlock with a remote control, card, or smartphone. Some models include features to help prevent leaving the door unlocked.
- 2 locks and dimple keys: Pick-resistant locks improve security.
- Ventilation: Small ventilation windows allow airflow while the door remains closed and locked.
- Glazed panels: Bring natural light into an entrance that may otherwise be dark.
- Sliding doors: No swing space is needed, and accessible designs are available.
Before Replacing Your Entrance Door
The cover method uses the existing frame as a base. If the frame is severely warped or corroded, this method may not be possible and removal of the existing frame may be required. Adding a new frame also reduces the opening by a few centimeters. For a narrow entrance, confirm the finished dimensions in advance.
Homes in fire prevention or quasi-fire prevention districts may require a certified fire-rated entrance door. Fire-rated doors offer fewer product choices than standard doors, and costs differ. We will check the designation for your area during the on-site survey.
A condominium entrance door is considered a common area, so replacement requires permission from the management association. The exterior design and color may also be specified. Applying decorative film only to the inside is often possible as work within a private area, but check the management rules and permitted construction hours in advance.
Combine Door Replacement with Other Entrance Work
Repairing the entrance tiles, installing porch handrails, and replacing intercoms, gates, and mailboxes can be done simultaneously with the door replacement, which allows for a single arrangement of craftsmen and reduces costs. If you are considering exterior painting, we will also propose combinations with the door color.
Which Door Fits Your Entrance?
We will check the condition of the frame, opening dimensions, fire prevention specifications, and management regulations during the on-site survey.
Frame-Overlay Installation Steps
The entrance door replacement using the cover method can be completed in one day. During the work, the entrance will be temporarily open, so please be cautious with valuables and the movement of small children and pets. Craftsmen will be present throughout the work.
Before the work, the entrance door showed noticeable fading and had issues with the locking mechanism.
The width, height, and depth of the existing door frame are measured in millimeters, and the condition of the frame, the opening direction (right or left), and the presence of fire prevention specifications are confirmed. Based on the measurements, a new door will be custom-made to fit perfectly into the existing frame.
On the day of construction, after protecting the area around the entrance, the existing door, hinges, locks, and door closers are removed. The door frame is left intact, and cleaning and substrate checks are performed to prepare for the new frame overlay.
We overlay a new door frame over the existing frame and securely fasten it with screws while checking for horizontal and vertical alignment. If the frame is distorted, it will affect the door’s closure, so we make precise adjustments during this step.
We hang the new door on the frame and install the hinges, lock, handle, and door closer. The joint areas between the old and new frames are waterproofed with caulk on both the indoor and outdoor sides, and we finish the look by covering the existing frame with a decorative cover (molding).
We make final adjustments to the door’s opening and closing, locking mechanism, and the speed of the door closer. If it’s an electric lock, we will register it and provide an operation explanation. After cleaning, we hand over the new key, marking the completion of the work.
Service Areas
Based in Aoba-ku, Yokohama, we primarily serve Kanagawa Prefecture and Tokyo. We can also accommodate some areas in Chiba Prefecture and Saitama Prefecture, so please feel free to consult with us.
View Service Areas in Tokyo
Akishima City / Akiruno City / Adachi Ward / Arakawa Ward / Itabashi Ward / Inagi City / Edogawa Ward / Ome City / Ota Ward / Katsushika Ward / Kita Ward / Kiyose City / Kunitachi City / Koto Ward / Koganei City / Kokubunji City / Kodaira City / Komae City / Shinagawa Ward / Shibuya Ward / Shinjuku Ward / Suginami Ward / Sumida Ward / Setagaya Ward / Taito Ward / Tachikawa City / Tama City / Chuo Ward / Chofu City / Chiyoda Ward / Toshima Ward / Nakano Ward / Okutama Town / Nishi-Tokyo City / Nerima Ward / Hachioji City / Hamura City / Higashi-Kurume City / Higashimurayama City / Higashiyamato City / Hino City / Fuchu City / Fussa City / Bunkyo Ward / Machida City / Mitaka City / Minato Ward / Musashimurayama City / Musashino City / Meguro Ward
View Service Areas in Kanagawa
Aikawa Town, Aikou District / Oi Town, Ashigarakami District / Kaisei Town, Ashigarakami District / Nakai Town, Ashigarakami District / Matsuda Town, Ashigarakami District / Yamakita Town, Ashigarakami District / Hakone Town, Ashigarashimo District / Manazuru Town, Ashigarashimo District / Yugawara Town, Ashigarashimo District / Isehara City / Odawara City / Kamakura City / Kawasaki City / Kawasaki City, Kawasaki Ward / Kawasaki City, Asao Ward / Kawasaki City, Saiwai Ward / Kawasaki City, Takatsu Ward / Kawasaki City, Tama Ward / Kawasaki City, Nakahara Ward / Kawasaki City, Miyamae Ward / Samukawa Town, Koza District / Zushi City / Chigasaki City / Oiso Town, Nakagun / Ninomiya Town, Nakagun / Hadano City / Hiratsuka City / Fujisawa City / Hayama Town, Miura District / Miura City / Minami Ashigara City / Yokosuka City / Yokohama City / Yokohama City, Aoba Ward / Yokohama City, Asahi Ward / Yokohama City, Izumi Ward / Yokohama City, Isogo Ward / Yokohama City, Kanagawa Ward / Yokohama City, Kanazawa Ward / Yokohama City, Konan Ward / Yokohama City, Kohoku Ward / Yokohama City, Sakae Ward / Yokohama City, Seya Ward / Yokohama City, Tsuzuki Ward / Yokohama City, Tsurumi Ward / Yokohama City, Totsuka Ward / Yokohama City, Naka Ward / Yokohama City, Nishi Ward / Yokohama City, Hodogaya Ward / Yokohama City, Midori Ward / Yokohama City, Minami Ward / Sagamihara City / Sagamihara City, Midori Ward / Sagamihara City, Minami Ward / Sagamihara City, Chuo Ward / Ebina City / Atsugi City
Kakeru Koumuten Co., Ltd.!
By renewing your entrance door, you can resolve issues with locks and opening/closing, improve insulation and security, and significantly enhance the first impression of your home. We will propose the optimal method after confirming the condition of the existing frame, opening dimensions, fire safety regulations, and condominium rules.
On-site surveys and estimates are free of charge. We welcome inquiries about subsidies and comparative estimates, so please feel free to contact us.
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contact Kakeru Koumuten Co., Ltd.
Kakeru Koumuten is a young company whose team is, on average, in their late twenties, but our skills are second to none.
Our greatest strength is that we handle scaffolding, roofing and painting entirely in-house. In an industry where these tasks are usually divided among contractors, our complete service simplifies project management and helps keep costs down. Above all, if a problem arises, we respond promptly.
We proudly describe ourselves as the youngest and most helpful renovation company in Kanagawa!
