Development of Condominium Housing "BASE88@Koshigaya" Proposing "Mobility Storage Space" Designed Around Mobilities for Life
Polus Group Chuo Green Development Co., Ltd. has developed "BASE88@Koshigaya," condominium housing designed with a focus on "mobility storage space" for bicycles, cars, and strollers, redefining them as "mobilities for life." This initiative addresses the rising demand for bicycles and the risk of theft and deterioration in residential areas by providing integrated, safe, and aesthetic storage solutions.
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- 📰 Published: May 11, 2026 at 22:27
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Polus Group Chuo Green Development Co., Ltd. (Headquarters: Koshigaya City, Saitama Prefecture; Representative Director and President: Takao Kaino) has developed "BASE88@Koshigaya," condominium housing designed with "mobility storage space" as a high-priority area, re-defining bicycles, automobiles, strollers, etc., as "mobilities that accompany one's life" and securing space for their storage.
## Background of Development: Increasing Bicycle Demand and Theft Risk in Residential Areas
In recent years, while high-priced electric-assist bicycles have become widespread, data from the Metropolitan Police Department shows that residential areas are the most common places for bicycle theft*. Therefore, the company recognizes the importance of establishing an environment where expensive vehicles can be stored safely and in a condition that prevents deterioration. In conventional condominium housing, bicycle parking spaces are often allocated to surplus exterior spaces, leading to issues such as deterioration due from exposure to rain, theft, and a cluttered appearance of vehicles detracting from the landscape.
*From Metropolitan Police Department "Crime Occurrence Information (Annual Total)"
### Conventional Condominium Housing Bicycle Parking Space Issues
- Theft risk
- Deterioration risk due to exposure to rain
- Cluttered appearance of bicycles in spaces carved out of planting areas
## About "BASE88"
"BASE88" is a brand that has received high praise from third-party organizations, including numerous design awards and manufacturer awards both domestically and internationally, such as the Good Design Award and Kids Design Award, for its spatial proposals centered on cycle spaces.
Instead of simply placing bicycles and other items in surplus spaces, "BASE88" views them as important items to be "stored" and has designed a "mobility storage space" with the highest priority on the approach to the entrance. It provides a daily base for enjoying hobbies while valuing bicycles and other items.
## Construction of "Mobility Storage Space" at "BASE88@Koshigaya"
Considering the location condition of "BASE88@Koshigaya," which is an 18-minute walk from the station, the construction of "mobility storage space" that integrates the building and exterior was made the top priority. The allocation plan ensures a slope with an appropriate gradient and two car parking spaces.
### ① Bicycle Parking Space
Bicycle parking, which tends to be relegated to surplus exterior space, has been integrated with the building, realizing "storage" under a roof.
In addition, to allow smooth pushing of vehicles, all units have a slope with an effective width of 1.0m or more. Due to the sufficient width, it is possible to push vehicles without descending from the slope.
The road surface adopts a "washed-out finish," reducing the risk of falling due to slipping in rainy weather.
### ② Parking
Parallel parking for two cars is standard, and in buildings 4, 5, and 6, a jointly used land with an easement has been set up to provide space for turning cars, enabling smooth entry and exit of vehicles.
### ③ Outdoor Storage
Outdoor storage has been newly installed right next to the mobility storage space. Important tools such as bicycle and car maintenance supplies, DIY tools, outdoor goods, and strollers can be safely stored. The wall surface is equipped with a DIY-ready base, lighting, and shutters.
An external outlet is installed within the mobility storage space. Furthermore, a standpipe to dramatically improve vehicle maintenance work efficiency is also installed along the approach route to the entrance. In terms of design, wood-grain material is adopted for the eaves, and a porch light illumination is added. This realizes a space that combines visibility and design at night and can be utilized for multiple purposes regardless of the time of day.
## Eight Smart Storage Spaces
"BASE88@Koshigaya" also pursues "appropriate storage in appropriate places" tailored to living lines within the interior. Eight storage spaces—earth floor storage, linen closet, outdoor storage, hall storage, living room storage, open closet, pantry, and MISERACK*—are installed as standard in all units.
*About "MISERACK"
In conventional condominium housing, even if there was hidden storage, there was not enough space to express oneself. If furniture is placed later, the room becomes narrower, and there are anxieties such as tipping over during an earthquake. By incorporating "display spaces" into the design from the beginning, the home itself becomes a canvas, maintaining spatial breadth and safety.
At "BASE88@Koshigaya," "MISERACK" is installed in all rooms, allowing each family member to freely arrange their "favorites," hobby books, and precious memories, creating a space where the individuality of the residents naturally overflows.
"BASE88@Koshigaya" VR Walkthrough Movie: https://youtu.be/7owtDdWHgQs
## "BASE88@Koshigaya" Overview
- Location: 5-106-1 Miyamoto-cho, Koshigaya City, Saitama Prefecture, and other areas (land number)
- Access: 18-minute walk from Koshigaya Station on the Tobu Skytree Line
- Total Units: 6 units
- Sales Price: 48.9 million yen to 57.9 million yen
- Land Area: 123.54㎡ to 155.86㎡ *Includes jointly used land
## Background of Development: Increasing Bicycle Demand and Theft Risk in Residential Areas
In recent years, while high-priced electric-assist bicycles have become widespread, data from the Metropolitan Police Department shows that residential areas are the most common places for bicycle theft*. Therefore, the company recognizes the importance of establishing an environment where expensive vehicles can be stored safely and in a condition that prevents deterioration. In conventional condominium housing, bicycle parking spaces are often allocated to surplus exterior spaces, leading to issues such as deterioration due from exposure to rain, theft, and a cluttered appearance of vehicles detracting from the landscape.
*From Metropolitan Police Department "Crime Occurrence Information (Annual Total)"
### Conventional Condominium Housing Bicycle Parking Space Issues
- Theft risk
- Deterioration risk due to exposure to rain
- Cluttered appearance of bicycles in spaces carved out of planting areas
## About "BASE88"
"BASE88" is a brand that has received high praise from third-party organizations, including numerous design awards and manufacturer awards both domestically and internationally, such as the Good Design Award and Kids Design Award, for its spatial proposals centered on cycle spaces.
Instead of simply placing bicycles and other items in surplus spaces, "BASE88" views them as important items to be "stored" and has designed a "mobility storage space" with the highest priority on the approach to the entrance. It provides a daily base for enjoying hobbies while valuing bicycles and other items.
## Construction of "Mobility Storage Space" at "BASE88@Koshigaya"
Considering the location condition of "BASE88@Koshigaya," which is an 18-minute walk from the station, the construction of "mobility storage space" that integrates the building and exterior was made the top priority. The allocation plan ensures a slope with an appropriate gradient and two car parking spaces.
### ① Bicycle Parking Space
Bicycle parking, which tends to be relegated to surplus exterior space, has been integrated with the building, realizing "storage" under a roof.
In addition, to allow smooth pushing of vehicles, all units have a slope with an effective width of 1.0m or more. Due to the sufficient width, it is possible to push vehicles without descending from the slope.
The road surface adopts a "washed-out finish," reducing the risk of falling due to slipping in rainy weather.
### ② Parking
Parallel parking for two cars is standard, and in buildings 4, 5, and 6, a jointly used land with an easement has been set up to provide space for turning cars, enabling smooth entry and exit of vehicles.
### ③ Outdoor Storage
Outdoor storage has been newly installed right next to the mobility storage space. Important tools such as bicycle and car maintenance supplies, DIY tools, outdoor goods, and strollers can be safely stored. The wall surface is equipped with a DIY-ready base, lighting, and shutters.
An external outlet is installed within the mobility storage space. Furthermore, a standpipe to dramatically improve vehicle maintenance work efficiency is also installed along the approach route to the entrance. In terms of design, wood-grain material is adopted for the eaves, and a porch light illumination is added. This realizes a space that combines visibility and design at night and can be utilized for multiple purposes regardless of the time of day.
## Eight Smart Storage Spaces
"BASE88@Koshigaya" also pursues "appropriate storage in appropriate places" tailored to living lines within the interior. Eight storage spaces—earth floor storage, linen closet, outdoor storage, hall storage, living room storage, open closet, pantry, and MISERACK*—are installed as standard in all units.
*About "MISERACK"
In conventional condominium housing, even if there was hidden storage, there was not enough space to express oneself. If furniture is placed later, the room becomes narrower, and there are anxieties such as tipping over during an earthquake. By incorporating "display spaces" into the design from the beginning, the home itself becomes a canvas, maintaining spatial breadth and safety.
At "BASE88@Koshigaya," "MISERACK" is installed in all rooms, allowing each family member to freely arrange their "favorites," hobby books, and precious memories, creating a space where the individuality of the residents naturally overflows.
"BASE88@Koshigaya" VR Walkthrough Movie: https://youtu.be/7owtDdWHgQs
## "BASE88@Koshigaya" Overview
- Location: 5-106-1 Miyamoto-cho, Koshigaya City, Saitama Prefecture, and other areas (land number)
- Access: 18-minute walk from Koshigaya Station on the Tobu Skytree Line
- Total Units: 6 units
- Sales Price: 48.9 million yen to 57.9 million yen
- Land Area: 123.54㎡ to 155.86㎡ *Includes jointly used land