Most modern houses feature at least one room whose sole purpose is to facilitate transit. Whether it is a short, narrow passage leading to the bedrooms or a sprawling entry hall, the corridor is so deeply embedded in our daily lives that it is difficult to imagine a domestic landscape where it never existed. Yet, for vast stretches of architectural history—particularly within the sprawling European villas of the Renaissance and earlier eras—movement operated on an entirely different logic. Rooms were not isolated nodes connected by neutral networks of asphalt, drywall, or timber; instead, they were organized as interconnected clusters that opened directly into one another.
In classical Palladian villas, for instance, perfectly aligned doorways frequently turned a sequence of distinct interiors into a continuous, unbroken route. To cross from one wing of the house to another meant physically traversing spaces where other occupants were already eating, sleeping, receiving guests, or sitting quietly. Privacy, in the modern sense of uninterrupted spatial isolation, was virtually nonexistent because circulation was shared by everyone inhabiting or visiting the structure.
This fundamental shift in domestic planning was famously brought to light by architectural historian Robin Evans in his seminal 1978 essay, Figures, Doors and Passages. Evans pointed to John Thorpe’s architectural plan for Beaufort House in Chelsea, drawn around 1597, as one of the earliest recorded English examples in which a dedicated central passage granted rooms independent access. Suddenly, a house no longer needed to function as a human chain.
Etymologically, the word itself carries movement at its core. "Corridor" entered the English lexicon through the Italian corridore, which is directly linked to the verb correre, meaning "to run." A narrow strip of space dedicated entirely to getting from one point to another sounds deceptively simple today. At the time of its introduction, however, it fundamentally redefined what a room could be, transforming domestic architecture from a web of overlapping pathways into a structured network of destinations and thoroughfares.
Privacy Arrived with Another Route Through the House
Once movement could be successfully extracted from occupied rooms, architectural floor plans gained the unprecedented ability to separate different kinds of human presence. A household member could remain quietly in a parlor while an entirely different person crossed the building through a parallel passage just inches away, unseen and unheard.
By the nineteenth century, this concept reached its zenith in the large estates of the wealthy, which developed intricate, parallel systems of circulation. Back stairs, discrete corridors, and service passages allowed domestic workers to navigate the margins of the home without ever intruding upon family spaces. Rooms could be supplied with greatly reduced encounters, meaning that privacy was no longer just a matter of social etiquette—it was actively produced by the floor plan itself.
Although the rigid class structures underpinning those historical houses were highly specific, the spatial innovations quickly crossed over into middle-class housing developments and eventually into multi-family apartment buildings. Dedicated utility rooms absorbed recurring household chores, while rear entrances and service stairwells established alternate routes for groceries, deliveries, and refuse.
Even as the social makeup of domestic labor evolved—with residents increasingly performing tasks once assigned to hired staff—the underlying floor plans largely retained the same habits. The blueprint of the home continued to reflect a deep-seated desire to segregate utility from leisure, and movement from habitation.
What Happens When the Corridor Becomes the Room
In recent decades, contemporary architects have begun turning this inherited logic completely inside out, questioning the strict division between movement and living space. MOS Architects achieved this with House No. 11, also known as the Corridor House, built for the inaugural Chicago Architecture Biennial in 2015. The experimental installation was constructed from narrow modules based roughly on the standard dimensions of a conventional hallway and a single sheet of plywood. Inside this linear network, unexpected domestic functions emerged: a bed appeared inside one module, while a desk occupied another.
In this inversion, the passage—traditionally treated as the neutral, wasted leftover between actual destinations—becomes the destination itself. MOS described the corridor as a device that historically made architecture increasingly obsessed with speed and logistics, focused solely on moving people and goods from one place to another as quickly as possible. Their house occupies that very circuitry, asking what happens when a supposedly empty strip of architecture acquires a vibrant life of its own.
A similar line of inquiry can be seen in Taku Sakaushi and OFDA’s Three Corridors House in Japan, which approaches the concept through a lived, permanent domestic plan. A long central hallway crosses the single-story residence, while slimmer passages running along the northern and southern edges double as protective verandas. Bathrooms, storage spaces, and even study areas naturally settle into the interstitial zones created between these pathways.
Here, circulation transforms into the primary framework that organizes the entire interior. Because these corridors are wide and porous enough to invite lingering, the project reveals a strange truth about the conventional hallway: a space originally developed to prevent interruption can actually become one of the most social parts of a house, provided architecture stops treating it as dead area.
The Laundry Room Escapes the Back of the Plan
Some of the most striking contemporary experiments with domestic layout appear in spaces traditionally relegated to invisible maintenance. In Fala Atelier’s House Within Three Gestures in Gondomar, Portugal, the laundry room breaks away from the main volume of the home entirely, rising upward into a distinct small tower. While laundry is conventionally tucked behind a closed door or squeezed into a dark closet, this design thrusts a work-oriented room into the spotlight, altering the silhouette of the entire building. A utilitarian function that architecture spent centuries pushing toward the darkest edges suddenly commands its own vertical presence.
Similarly, contemporary urban interventions demonstrate how deeply ingrained these service dependencies remain. Mesura’s Vasto Gallery in Barcelona, a converted industrial apartment, is organized around a freestanding wooden service core that completely detaches itself from the surrounding walls and ceiling. An eight-meter stainless-steel kitchen counter stretches openly through the main room, while private functions cluster tightly around the central volume. The traditional hierarchy separating the front-of-house from the service-of-house dissolves when both are treated as major spatial elements, placing the raw mechanisms of daily living in plain sight.
A-01’s No Footprint House in Costa Rica applies a similar strategy on a larger scale, compressing domestic systems into a central service core while leaving the surrounding floor plan completely open and adaptable. Utilities gather at the core, allowing the rest of the house to remain flexible. It is a contemporary manifestation of an ancient architectural instinct: collect the heavy labor in one specific location so that the surrounding space can feel entirely liberated. Today, that labor extends far beyond cooking and cleaning to encompass advanced energy management and climate control, yet architecture continues to give those systems their own dedicated territory.
The Ordinary Plan Is Full of Architectural Fossils
A closer look at any ordinary, contemporary house reveals that these historical divisions are embedded everywhere. The hallway allows one person to cross the home without interrupting another’s privacy. The laundry closet contains a repeating cycle of labor behind a pair of closed doors. A garage entryway acts as a spatial buffer to receive shoes and bags before they venture further into the living quarters.
Even the mechanical cupboard functions as a tiny, sealed room entirely devoted to the unseen systems that make every other room comfortable. These spaces rarely dictate how a home is advertised or described in real estate listings, even though the modern household would instantly struggle to function without them.
What remains fascinating is the remarkable longevity of these arrangements long after their original social and technological conditions have vanished. A corridor that once helped wealthy estate owners physically separate domestic servants from their employers eventually becomes the standard hallway in a modest two-bedroom apartment. A service zone evolves into the utility core of an experimental house, and a laundry room transforms into a tower. Long after the rules of living have changed, architecture continues to harbor the old behaviors, preserving historical fossils within the walls of our everyday lives.
