架构师提供的文本描述。该项目位于一个约1000平方米的城市地块上，有一个陡峭的斜坡和一座既有的建筑，包括插入一套新的住宅。两栋房屋在同一地块内共用公共空间，但将有两个不同的业主居住。现在的业主拥有50%的地块和现有的建筑，而我们的客户是地块另一半的所有者和建造新房子的权利。双方必须同意在不受干扰的情况下共同生活的建筑。

Text description provided by the architects. The project, situated in an urban plot of approximately 1000m2 with a steep slope and with a pre-existing building, consists on inserting a new dwelling. Both houses share common spaces within the same plot, but will be inhabited by two different owners. The current owner has 50 % of the plot and the pre-existing building, and our client is the owner of the other half of the plot and the right to build the new house. Both must agree on the architecture to live together without interference.

 © Aitor Ortiz

C.Aitor Ortiz

当地的计划规定，这座建筑必须符合两家住宅的类型.严格地说，这个模型假设两个房子在一个体积内。接受这一前提意味着要依附于现有的建筑，包括景观和生活空间。

The local plan states that the building must meet a two-family residential typology. Strictly this model assumes two houses within a single volume. Accepting this premise means attaching to the existing building, involving the views and the living space.

 © Aitor Ortiz

C.Aitor Ortiz

考虑到为了管理目的，这两座建筑物都应被理解为一个单元，因此，战略是通过一系列共有的庭院和上层梯田，将它们实际联系起来。

Considering that both buildings should be understood as a unit for regulatory purposes, the strategy is to link them physically through a series of common elements consisting of a shared courtyard and the upper terraces.

 © Aitor Ortiz

C.Aitor Ortiz

因此，该提案的重点放在本节。它重新定义了现有住房的不同层次。地下室变成地面，等等。这样，这两座建筑都是在允许的轮廓和一个单一的部分框架内。

The proposal therefore focuses in the section. It redefines the different levels of the existing housing. The basement becomes ground level and so on. In this way, both buildings are framed within the allowed outline and a unitary piece.

 © Aitor Ortiz

C.Aitor Ortiz

在这些条件下，新的建筑物被设想为一个适合地形的部分，从现有的建筑延伸到接近地段的尽头，下降到一个较低的水平。

Under these conditions the new building is conceived as a piece adapted to the topography that somehow extends from the existing building, moving towards the end of the lot and descending to a lower level.

 Floor Plan

这房子有地下室，一楼和一楼。第一层是在现有住宅屋顶的地面上横向出现的体积。两院之间没有实质区别。一个间隔，两者之间的距离是由一个折叠的盖子和它的蔬菜处理，总是允许视野的开放空间。

The house has a basement, ground floor and first floor. The first floor is materialized in a volume that emerges laterally on the ground of the roof of the existing dwelling. Between both houses there is no material distinction. A gap that distances both houses is created by a fold of the cover and its vegetable treatment, always allowing views over the open space.

 © Aitor Ortiz

C.Aitor Ortiz

建筑物的地板是围绕着一个内部庭院组织起来的，这样就可以看到室内空间的广阔景象。通过这种方式，住宅向外层空间开放，并在保持高度隐私的同时放大了它的大小。另一方面，餐厅和休息区转向景观。

The floor of the building is organized around an interior courtyard which allows wide sights of the interior spaces. In this way, the dwelling opens to the outer space, and amplifies its size while maintaining a high degree of privacy. The dining and lounge areas turn, on the other hand, to the landscape.

 © Aitor Ortiz

C.Aitor Ortiz

建筑建议书是由两个业主之间，以及他们与城市立法之间的一项协议进行谈判的，在这一协议中，该建议是灵活适用的。由此产生的体系结构就是该协议的具体化。

The architectural proposal negotiates an agreement between the two owners, and between them and the urban legislation, in which the proposal flexibly fits. The resulting architecture is the materialization of this agreement.