Circulation Flow｜Custom-built homes by architecture firms9Picks｜Designing for Ease of Living with Continuous Circulation

A “circulation” plan (kaikyū dōsen) is a layout strategy that enables movement through a home in a continuous loop rather than along one-way routes. It is a design approach that increases the flexibility of the floor plan and enhances everyday livability. Centered around the kitchen, a looped circulation can optimize household workflows by linking the pantry, washbasin, and laundry room; serve as an indoor play circuit where children can move freely; and, by providing multiple paths, create effective cross-ventilation routes. The benefits of continuous circulation are manifold. The design firm carefully analyzes family composition, daily rhythms, and household routines to design movement flows that are easy, intuitive, and low-stress, integrated directly with the spatial design. We present case studies of residences where daily life naturally and smoothly unfolds.

The site is located on the suburban fringe near the city and is adjacent to parking and similar uses, so the design responds to privacy and noise considerations. The proposal is a single‑storey dwelling accented by a gabled (triangular) roof. The open-plan living/dining/kitchen (LDK) is a spacious volume with ceilings elevated to follow the roofline; within the living area a built-in sofa corner with a lowered ceiling and a bay-window bench are provided. The dining area opens onto a generous deck and garden, and the household work sequence runs from a bespoke kitchen through a pantry to the wash/wet room; the plan also incorporates a looped circulation connecting a small Japanese-style room (washitsu) and the bedroom.

This is a two-bedroom, living-dining-kitchen (2LDK) residence built on a site elongated in the east–west direction. In addition to the bedroom, it provides a generous shoe closet, pantry, utility/housekeeping room, and study, securing spatial generosity beyond a mere layout. Site conditions include an east-side road, a west-side embankment/slope, and a northern diagonal-plane setback restriction, making the site planning and the relationship to the exterior particularly important. A courtyard is incorporated into part of the first floor, bringing light and a sense of spaciousness to the 24-tatami LDK. A looped circulation centered on the stair organizes movement, segmenting service and living zones while connecting them gently. The dwelling also addresses thermal insulation, energy efficiency, and seismic performance.

This is a residence with an attached atelier for a designer couple, built on a site in a Tokyo residential neighborhood that, despite its urban location, opens onto abundant greenery to the south. On the first floor are arranged a refined pottery studio reminiscent of ceramicist Lucie Rie’s atelier and a garden for enjoying gardening. The second floor serves as the living area centered on the living–dining–kitchen (LDK), and a looped circulation route mediated by a double‑height void deepens the connection with the atelier. A deck terrace opening onto the greenery and a spiral staircase gently link interior and exterior, creating a home where creative work and daily life naturally intersect.

This rebuilt residence for a couple is located in a neighborhood that still retains the nostalgic character of historic Shōnan. While respecting the long‑cherished landscape and collective memories, we preserved the existing trees and pursued an architectural presence appropriate to the site. A façade color palette selected to harmonize with the surrounding context, together with the greenery that will be shaped by maturing planting, lends the home a rich and nuanced expression. It is a quiet, refined dwelling that connects the community’s memories to the future.

This is a glass house with a hybrid structure of steel, timber, and glass, built on a site of approximately 220 tsubo along the Tokigawa stream in the northwestern part of Saitama Prefecture, about 50 km from the city center. It faces the Chichibu mountain range and opens onto an environment where the clear stream and seasonal changes can be enjoyed. The second-floor living spaces are arranged with a circulatory flow, with a design that prioritizes an integrated thermal environment and abundant daylighting. Instead of providing openings in the exterior walls, the building is equipped with an environmental control system that combines horizontal louvers on projecting floors with gravity-driven (stack) ventilation, connected to topside mechanical exhaust.

Located along the main arterial road that leads to Kurashiki’s Bikan Historical Quarter, this residence carefully reconciles its relationship with the streetscape and the need for privacy. The predominantly single‑storey volume uses a horizontal slit to visually lift the roof, producing a light expression while presenting a composed, closed presence to the exterior. The approach leads along a courtyard to the entrance, and the living spaces are arranged around it as if to embrace it. Living largely contained on a single level, together with the courtyard that screens views from the outside, creates a quiet and rich place to inhabit within the historic streetscape.

Set within the verdant streetscape of Tsukuba Harukazedai, this residence is designed for a family of three. The façade, composed of layered mono-pitched roofs, gives the exterior an upward, sky-reaching impression. Inside, responding to the couple’s wish to live surrounded by books, a large full-height wall bookshelf was provided so the family can freely enjoy reading. Double-height spaces, a small raised platform (koagari), and flexible, adaptable areas accommodate diverse ways of living, creating a home with breathing room that embraces the family’s growth and change.

This residence, built on a sloping site overlooking the rich nature of the Akigawa Hills, is a home where everyday living and the outdoors gently blend. Centered on a lawned courtyard, the plan places the main house with a living–dining–kitchen (LDK) and a detached annex containing the wet areas and a garage, creating a composition that keeps nature close at hand. At the center of the space is a five-meter-long dining table with an integrated sink, creating a gathering place for family and friends. The deliberately understated interior leaves room for the occupants to intervene and nurture it themselves. It is a home where both the landscape and daily life mature over time.

This is a mountain lodge for nature and creative work, built at an elevation of 1,600 m in the Yatsugatake Mountains. To respond to the severe conditions—winters that can reach minus 20°C—a hipped roof with deep eaves was adopted, giving the building a presence that gently blends into the expansive natural landscape. To accommodate mountain living with mud, snow, and water, a circulation layout centered on storage was planned, allowing movement to circulate around storage areas. By opening and closing the joinery, the plan can be flexibly reconfigured into a windbreak/vestibule or a guest circulation route. The space, where functionality and comfort have been carefully refined, serves as a quiet base for engaging in creative work while enjoying the seasonal changes in nature.