• First proper tea room with 4.5 mats was built during 足利（あしかが） / 室町（むろまち）period (1338-1573), in the 銀閣寺（きんかくじ） (CQ12).

• the 草案 style is not terribly new, the first reference we find in Nara period (~700 AD), in Empress Genshō's following poem:

This chamber built with barked wood
Brought from the grove nearby
And thatched with obana strems
Shall stand a thousand years

• 1462 describes a tea room with a small door, decorated with Chinese objects and a Chinese painting.
• In Okakura, he explains, however, how the tea room is made for the tea master, to his taste, and is not supposed to stand for eternity.

• More concretely, in Sakai of Jōō's time, the concept of a mountain hermitage in the city was already popular (see here)
• Transition from 書院 to 草案 style marked by the disappearing of the staggered shelves
• Jōō built a famous 4.5 畳 tea room: 同仁斎（どうじんさい）(first one actually by his teacher)
• 利休's 待庵 obviously the most famous example.
• As Rodrigues explains: These houses cost a lot of money; this povery is really very rich and wealthy.

• In the first passage of the first book of the 南方録, 利休 explains how true 茶の湯 can only be done in the 草（そう）-style room.

• Pillars of 床 different from other pillars (Okakura)
• Asymmetry as a guiding principle, so the guests can complete it in their heads.
• It is important it is completely closed, so no interaction with the outside world is possible. This is the main difference between the hut and the normal Japanese room (CQ26).

• 織部（おりべ） then coined the 燕庵（えんなん）style: 3.75 畳, adding one mat for the attendants, and some connected rooms.

• 遠州（えんしゅう）reintroduced 書院 feel, for example in 密庵（みつあん）
• 有楽（うらく）created 如庵（じょあん）

→ Nobody continued 利休's style

• Walled space in front of 躙口（にじり　ぐち）, which serves as a interim space between mundane outside world and tearoom. Later, the 路地（ろじ）would play this role