Chashitsu: mats, entrances and a hearth

A chashitsu is a space where a host receives guests for tea. It can be one room within a larger building or a separate structure with supporting facilities. Shoin-style rooms draw on formal reception architecture; rustic sōan rooms often organise the gathering through small spaces and earthen, timber and bamboo surfaces.

Tea-room size is commonly described by the number of tatami mats, with four and a half as an important reference. Urasenke places four-and-a-half-mat rooms in either the small-room or large-room category. A daime mat is shortened to roughly three-quarters of a full mat’s length. Mat count alone does not determine the placement of the alcove, entrances and hearth.

Guests enter the room while the host brings utensils from a preparation side. Rustic small rooms often give guests a low nijiriguchi entrance that requires bending down; the host uses a separate sadōguchi. Other rooms have full-height entrances. These routes organise the meeting without making a crawl-in door universal.

The tokonoma is an alcove for a hanging scroll, flowers and other display, rather than a sleeping platform. Its relationship to the guest mats establishes a direction for looking. Wall surfaces, posts and ceilings vary between rooms; the display area helps organise attention within the gathering.

The ro is a hearth cut into the floor, with a kettle heated above it. A furo is a portable brazier standing on the floor. The sunken hearth is generally used in colder seasons and the portable brazier in warmer ones. Changing between them alters the relationship between utensils, host and guests. Hearth position and the choice of a standard or reversed arrangement help produce different plans.

The mizuya supports preparation and the washing and handling of utensils, connecting to the host’s route. The roji is the garden approach for guests, with features such as a waiting bench, stepping stones and a water basin. The spatial sequence thus includes work before service and movement before entering the room.

Tea gatherings took place in shoin reception rooms and also developed within enclosed, smaller spaces. The four-and-a-half-mat tea room is commonly associated with Murata Jukō, its establishment as a type with Takeno Jōō, and its prominence with Sen no Rikyū. Formal shoin rooms and smaller rustic rooms continued alongside one another.

Tai-an at Myōki-an in Ōyamazaki is an early surviving tea room associated with Rikyū’s taste and dated around the Tenshō era, 1573–92. Its main room has two mats, accompanied by an anteroom and service space. A corner hearth, recessed alcove, windows and ceiling organise the compact interior. The two-mat description refers to the main room, not the entire building.

Oda Urakusai built Jo-an in Kyoto during the Genna era, 1615–24; it now stands in Inuyama. Old calendar sheets line part of its walls, and closely spaced bamboo characterises its Uraku window. Urasenke’s Konnichi-an is a different, one-and-three-quarter-mat room. These named rooms preserve distinct choices of mats, openings and wall treatment.

At the 1872 Kyoto exhibition, Urasenke’s Gengensai introduced ryūrei service using tables and chairs. Tea arrangements could therefore accommodate a seated posture beyond the tatami floor. Modern teaching and tea organisations expanded places of practice. Tea rooms now serve training and hospitality, while historic examples are also preserved as architectural heritage.

Built around 1913 and replastered in 2020, the Okamoto residence tea room in Gifu assigns two full mats to guests and a shortened daime mat to the host. A long board separates them and contains the hearth; the alcove is southeast. Its layout name therefore describes working relationships, not just area. The southern half is service space, while the tea room and mizuya occupy the north.

Tai-an places the hearth in a corner of the host’s area, with an adjoining room beyond paper-covered sliding doors. Plaster conceals the alcove’s corner posts and continues across its low ceiling. The main room’s ceiling has three sections, including exposed roof construction. A Kyoto University of the Arts account relates these choices to easing the sense of confinement.

Urasenke built the eight-mat Totsutotsusai as a practice room in 1839, remodelling and renaming it in 1856. Sliding doors in the adjoining room carry writings on utensils, procedures and Rikyū’s verses. Teaching has a concrete setting here, with written material beside the practice space.

Designed by Kayoko and built in 1953, Yūshin combines a chair-seated ryūrei area with six-mat and three-mat-plus-daime rooms. Its ryūrei area uses a Misonodana table arrangement. Modern adaptation here means different postures sharing one complex.

Jōan at Toyama’s Sato Memorial Art Museum is a different room from Jo-an in Inuyama. Moved from a private home, it was relocated again in 1993, when its surrounding facilities were redesigned. Read the official plan from the lobby at the bottom: the guest side leads through an entrance, waiting bench and garden to the left side of the main room. The preparation side connects the mizuya with the labelled host entrance above. The hearth occupies the inserted board beside the host’s working area. Guests and utensils thus approach the shared room from different sides. This reading describes one plan, not a universal route.