在《第四道墙》中，Spiegel Aihara Workshop（SAW）翻新和扩建了位于Bernal Heights的1907年的住宅，将房子重新定位为一个舞台。房间不再是内向的、无休止的内部空间，而是被重新定向到一个新的后方立面，使家庭生活的场景能够通过面向后院的大窗户播放出来。参照戏剧，这个设计突破了 “第四面墙”，成为日常工作的一种表演。

For The Fourth Wall, Spiegel Aihara Workshop (SAW) renovates and expands a 1907 home in Bernal Heights, repositioning the house as a stage. Rather than inward-facing and endlessly interior, rooms are reoriented towards a new rear facade, enabling scenes of domesticity to play out across large windows facing the backyard. Referencing theater, this design breaks through the “fourth wall” as a performance of the daily routine.

房主委托SAW对这个历史悠久的住宅进行重组、开放和扩建，以适应不断增长的家庭，并在房子和后院之间创造一个更有意义的联系。因为正面是受历史保护的，所以SAW将现代化和扩建的重点放在了背面。以前在房子后面的一个附加物–基本上是一个靠在一楼厨房的不封闭的棚子–被拆除了，取而代之的是一个新的三层楼的附加物，巧妙地扩大了面积（从2,162平方米到2,432平方米），更引人注目的是，通过在每一层建立窗户、露台和门，连接到后院。

The homeowners engaged SAW to reorganize, open, and expand the historic home for a growing family, as well as create a more intentional connection between the house and backyard. Because the front façade is historically protected, SAW focused the modernization and expansion on the back. A previous addition to the back of the home—essentially, an unenclosed shed leaning against the first-floor kitchen—was removed and replaced with a new, three-story addition that subtly extends the square footage (from 2,162 sf to 2,432 sf) and, more dramatically, connects to the backyard through the creation of windows, decks, and doors on every level.

在顶层，主卧室扩展到一个屋顶平台，可以看到广阔的景色。在一楼，饭厅向阳台延伸。最后，在一楼，书房直接折叠到院子里，那里的混凝土铺面的几何排列从门前延伸到草地上，模糊了建筑和景观之间的区别。

On the top floor, the master bedroom expands onto a roof deck over expansive views. On the first floor, the dining room peels open into a balcony. Finally, on the ground floor, the den folds directly into the yard, where a geometric arrangement of concrete pavers stretches from the door into the grass, blurring the distinction between architecture and landscape.

从后院看去，后院就像一个由不同规模的窗户、门和甲板组成的堆叠排列，让人可以瞥见日常生活的不同领域。与舞台概念的联系因其覆层而得到加强：一个涂有白色木板和侧板的防雨屏系统。引人注目的是，板条的间距在门洞、阳台和甲板上被操纵，以允许光线通过，并提供与外墙融合的安全栏杆，同时还增加了定义。这种效果抽象地参考了舞台窗帘的开合，以揭示新的场景。

From the backyard, the rear reads as a stacked arrangement of variously scaled windows, doors, and decks, offering glimpses into different areas of everyday life. The connection to the concept of a stage is enhanced by its cladding: a painted white wood-slat and siding-rain-screen system. Strikingly, the spacing of slats is manipulated at door openings and the balcony and deck to allow light through and provide safety railings that blend with the facade while still adding definition. The effect abstractly references the opening and closing of stage curtains to reveal new scenes.

在内部，一楼和连接院子的下层之间以前没有内部连接。为了解决这个问题，SAW插入了一个高效的新的中央楼梯，以重组房子的脊柱，并无缝连接所有三个楼层。在上层，战术性地设置了雨棚，将阁楼变成了一个双人间的儿童房，将风景偷换到地产线之上。

Inside, there had previously been no interior connection between the first floor and the lower level, which connects to the yard. Addressing this, SAW inserted an efficient new centralized stair to reorganize the spine of the house and seamlessly link all three levels. On the upper level, tactically placed dormers turn the attic into a double-occupancy children’s room, stealing scenes out over the property lines.

向院子走去，外墙的覆层似乎由内而外，沿着围栏包裹着同样的板条图案，反过来又将后院框成了一个室外房间。这个栅栏经常被用作风景投影的屏幕。此外，SAW重新平整了后院的排水系统，并在周边增加了凸起的皮质花坛，用于遮挡和食用花园。这一切都像一个大的反转，因为后院被重新定位为面向内部，从这里可以体验到整个家庭的活动。

Towards the yard, the exterior cladding appears to turn inside out, wrapping the same slatted pattern along the fences and, in turn, framing the backyard as an outdoor room. This fence is often used as a screen for scenic projections. In addition, SAW regraded the backyard for drainage and added raised corten perimeter planter beds for screening and an edible garden. This all plays out as a big inversion, as the backyard was reoriented to face in, a seat from which to experience the activity playing out across the home.

Architects: SAW // Spiegel Aihara Workshop
Area : 2432 ft²
Year : 2021
Photographs :Bruce Damonte
Structural Engineer : GFDS
Landscape Contractor : JG Universal Landscapes
General Contractor : CH Burnham Inc
City : San Francisco
Country : United States