“They made land out of air. The materials expressed themselves as they are. Really poetic”.
— 2017 Awards Jury
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Telegraph Hill Residence by Andrea Cochran Landscape Architecture,
Appreciation towards ASLA for providing the following description:
The Telegraph Hill Residence landscape design expands and dramatizes the entry sequence and exterior spaces of an existing hillside residence by dissolving the barrier between the user and the expansive landscape beyond.A carefully choreographed entry sequence along an entry stair welcomes the visitor, creating moments for pause, respite and drama while negotiating the substantial grade change from the sidewalk to the front door. Along the sequence, clean walls of corten steel contrast with raw cliff face and plantings, while planes of glass at the end of the overlooks bring the user within a visceral proximity to the cliff drop underneath. At the rear of the house, a sheltered shade garden, comprised of soft plantings, blossoming trees, and permeable materials provides a quiet refuge. The design elicits visceral responses to the landscape as a source of both introspection and connection to the larger environment.
▲腐蚀锈版营造的观景平台将外部风景引入到院内有限的空间范围内。 而客人则被路径引导到了悬崖边缘的这些观景平台上领略这些壮景，Corten steel overlooks capture additional exterior space on a very limited site. Guests are brought within visceral proximity of the cliff edge.
▲雕塑和锈板，植物及岩石相互配合，构成似动态的入口景观，A sculptural interplay of corten, plantings, and stone form the dynamic entry sequence.
▲多种材料相互连接构成动感十足的入口景观。该设计重新整理了场地内的限制条件，并将其转化为多层次的庭院体验，A variety of materials interface to form a dynamic entry sequence. The design reimagines the site’s physical constraints as opportunities to transform the landscape into a multi-layered garden experience.
▲设计师巧用一面简单的锈板给庭院增加了新的材料语言，并借此保留了原有的车道边缘。而混凝土挡土墙的柔和灯光则引导着访客进入另一个景观序列，A single plane of corten steel introduces the material language of the design and retains the edge of the driveway, while soft path lighting along a concrete retaining wall guides visitors to the new entry garden sequence.
▲水平转盘设置在悬崖顶面，而其上所使用的铺装则是根据当地历史保护原则，应当地社区组织和规划部门的要求而使用的，Wedged on a cliff face, the level turntable was detailed in historic brick as necessitated by the local neighborhood group and planning department.
▲干净利索的细节提升了材料的表现力，并且通透的设计使人感觉仿佛穿行于树冠之中，Crisp detailing heightens the expression of the materials and visually elevates the illusion of walking into the canopy.
▲镂空的踏板将悬崖下景观展露的一览无余。而在平台的尽头设计师采用玻璃代替了锈板，构成了一面透明护栏，The grates of the overlook are detailed to reveal the precipitous drop below. A glass barrier is carefully set into the corten to provide a seamless, transparent guard rail.
▲整个设计过程中，设计团队充分利用各种机会营造植物景观，Throughout the design process, the team was sensitive to opportunities to create more space for garden plantings.
▲设计师在娱乐平台的入口采用了一扇锈板门，并在入口处设置了供取暖用的燃火设施，A corten gate controls access to the entertaining terrace where a custom fire feature provides warmth.
▲设计师对后院的树荫花园做了保留和提升，将新旧景观结合到了一起，The rear shade garden was preserved and updated, weaving together the old and the new.
▲一块用可回收材料搭建的平台为主人每日瑜伽提供了场所。燃火装置可供夜间户外活动取暖，同时被加热的石头，可以当作座椅，A raised deck made of recycled material provides expanded usable space for daily yoga. A fire feature warms the space at night, while heated stones provide seating.
▲在庭院的中心位置，设计师用锈板做庭院的背景来衬托四季景观，并凸显开花植物的活力，At the focal point of the garden stands a beautifully weathered corten wall that both anchors the space and highlights the vibrancy of the flowering trees.
The landscape architects had worked with the client on several other projects and understood that the couple wished to create a private modern home and garden. However, because of the historic nature of the site and neighborhood, including the preservation of the historic street right-of-way that now forms the terrace on the east side of the residence, the renovation was subject to intense design review and scrutiny by the local neighborhood group and planning department, who required the clients to preserve the historic character of the existing house, along with the brick paving and the historic brick walls at the edge of an abandoned street right of way.
At the same time, the architect proposed lowering the garage and basement six feet to provide additional usable square footage for the house and to reduce the slope of the driveway, providing a level area at the garage for cars to turn around and exit safely to the street. This elevation change required completely reconfiguring the driveway access to the garage and the residence; no small feat given the requirements for use of brick, the proximity of the driveway to the ravine and the neighbors’ foundations. Additionally, there were technical constraints and challenges due to the instability of the cliffs below. The team, working with geotechnical engineers, was required to preserve and to protect the integrity of the cliff—and to respect that other cliffs in the area had collapsed in the past. The challenge lay in creating more useable space here, making it possible to invite users to the cliff edge without compromising their safety or the stability of the site.
PHILOSOPHY + INTENT
On any given day, the site experiences a large amount of wind, cold, and fog off the San Francisco Bay. At the same time, the views from the site toward the East Bay, waterfront, and downtown are unparalleled. It was important for the design team to create exterior spaces for the clients that would highlight and expand access to the landscape, while also considering the need for private refuge and comfort.
The project draws inspiration from the landscape as a source of both prospect and refuge. In designing the front entry stair, the landscape architects took advantage of the challenging spatial conditions to create the additional terrace space necessary to access the views from the site, and to design an experiential journey leading from the driveway gate to the front door. A carefully choreographed entry sequence leads the user along a sloped stone pathway and up the stair, which ascends through lush garden spaces that open out to overlooks and terraces offering wide views of the surrounding landscape. The corten steel overlooks cantilever precipitously at the edge of the cliff, terminating in sheets of glass that dissolve the barrier between the user and the expansive landscape beyond. While the overlooks invite the user to enjoy the views, a porous ground plane of steel grating intensifies the psychological and physical experience by permitting views downward to the substantial drop below. Stepping from solid ground onto one of these overlooks triggers a variety of responses, from a sense of floating to one of vertigo.
The shade garden at the rear of the house buffers the residence from the adjacent neighbors’ home. Special care was taken to preserve and restore the existing walls and trees, which had significant unearthed potential. The space is accessible from the house, acting as a refuge from the wind and fog and opening up the residence for sheltered outdoor use. At the focal point of the garden stands a weathered corten steel wall that anchors the decomposed granite and highlights the vibrancy of the flowering dogwood trees, and screening a fourteen-foot concrete retaining wall beyond. The garden’s design makes space for a meditative experience for daily yoga, while also acting as a spillover space for parties—a valuable contribution to the feeling of a private green sanctuary in an urban context.
MATERIALITY + SUSTAINABILITY
The landscape architects were challenged to find materials that would blend with the brick paving yet contribute to the feeling of a modern home that the clients desired. The team chose corten steel for the terraces to blend with the warmth of the brick, and to stand in stark contrast to the soft plantings and rough cliff face. Honed gray basalt pavers serve as a neutral counterpoint to the brick. Together, the materials underscore a feeling of sanctuary within the urban context along with a visceral connection to the cliff edge. Throughout the design process, the team was sensitive to opportunities for the reuse, preservation, and reclamation of materials. The reconfigured driveway was constructed using reclaimed bricks, while the restructured stairways create space for new plantings that were selected for their drought tolerance. The landscape architects restored and updated the shade garden as an intimate, contemplative space defined by plantings and permeable surfaces. The garden is visible from the kitchen and exercise room, and preserves most of the original trees while adding new plantings, a deck made of recycled rice hulls (serving as a platform for yoga), stone seating suited to contemplation, and a fire feature. At the brick patio, a green roof planted with mixed succulents creates additional green space and regulates temperatures in the urban heat island.
Lead Designer：Andrea Cochran, FASLA，Horng-Sheng Tu, ASLA，Jeremy Tsai，Sarah Keizer，Amir Kunin
Civil Engineer/MEP：Firma Design Group
Structural Engineer：GFDS Engineers
Electrical Engineer：Summit Engineers
AV Designer：Audio Visual Engineers
General Contractor:Van Acker Construction Associates
Landscape Contractor：Curtis Edward Dennison Landscape
Paving and Stone Contractor：Omni Stone Masonry
Metal Fabricators:Product and Design & Complete Fabrications
Concrete Contractors:Adorno Construction;
Deck Fabrication:Rushton & Hawley