
Neighborhood of Seventy Low Cost Houses
1986 to 1991Seventy low-cost houses in 4,2 acres, designed by families, and partially built by families, as part of the self help construction process of Construyamos, the largest self help cooperative in Colombia, with a total construction volume of 50,000 houses per year. This project was to be a model of an entirely new kind of low cost housing process, in which a more organic community can be achieved, without increasing construction cost.
The project was built in Santa Rosa de Cabal, under the guidance of C.E.S., on a sloping hillside, in a rural area. It includes 70 houses, ranging in size from 100 m2 to 139 m2. The houses are two-story main volumes and one-to-two-story secondary volumes. The two-story volumes shape the streets, and the secondary volumes help define a garden at the back.
In the Santa Rosa project, all the houses are different. The overall configuation of the site and the forming of the streets in parallel with the “contribution” of each house to the shaping of public spaces, were conducted on the land by the members of C.E.S. with representatives of Construyamos and the housing group. It is only after each individual plot had been “set” in relation to the larger whole, that the individual families took over, and laid out their houses on the land, with a C.E.S. “layout coordinator”.
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Neighborhood of Seventy Low Cost Houses: Memo to Doug Aiken with an extensive list of the items requested to be available for their first session
01/01/1986
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Neighborhood of Seventy Low Cost Houses: Response to the request for providing detailed information on on-going housing projects by Construyamos and on architectural and structural features of houses and neighborhoods of the Santa Rosa area; a 64-page report is attached
28/05/1986
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Neighborhood of Seventy Low Cost Houses: Memorandum of Agreement on Santa Rosa Pilot Project. Transmitting a modified memorandum with clarifications on the respective roles of each of the project participants; requesting the signature of C.E.S.
29/05/1986
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Neighborhood of Seventy Low-Cost Houses: Preliminary Design Drawings - House volume layout on the site
20/11/1988
Site plan drawing recording the house volumes as they were laid-out on a model; with notes written on the drawing, informing Christopher Alexander about two major concerns of the families, regarding the heights of the houses and their general layout ...
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Neighborhood of Seventy Low Cost Houses: Permit Drawings - Site Plan
01/11/1988
Site plan with the neighborhood street and lot layout, as it was approved by the Planning Department; it also includes a chart with sizes of different site areas with percentages and three typical street sections.
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Neighborhood of Seventy Low Cost Houses: Building Permit drawings - Site utilities
01/11/1988
Site plan depicting the aqueduct line laid-out, approved by the Planning Department.
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Neighborhood of Seventy Low Cost Houses: Construyamos - Camara de Vivienda Popular por Autogestion Comunitaria; Bylaws, objectives, focus
18/10/1983
Description of the obligations and role of the organization regarding low-cost housing projects; specifically the origin, purpose, general and specific objectives, internal organization, projects and locations, as well as the work program for 1987 of Construyamos.
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Neighborhood of Seventy Low Cost Houses: Simulations of Sequence for Neighborhood Layout, Lot Division, and House Layout
01/08/1986
48-page document on the sequence of design decisions for the neighborhood layout, the lot division and the house layout, accompanied with examples.
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Neighborhood of Seventy Low-Cost Houses: Memorandum of Agreement for a Pilot Project, Santa Rosa de Cabal, Risaralda
29/05/1986
7-page unsigned memorandum of agreement between “La Camara de Vivienda Popular Por Autogestion Communitaria ‘Construyamos'” and the Center for Environmental Structure, for consulting services directed toward development of a participatory design methodology for the pilot project in Santa Rosa de ...
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Neighborhood of Seventy Low-Cost Houses: Statistical analysis of factors relating to pirate settlement housing in Bogota in 1970
01/01/1971
18 pages with various tables of detailed statistical information like: family incoms, labor input in housing construction, percentage distribution of dwelling units etc. Information is based on various studies and sources observing various pirate settlements in the country.
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Neighborhood of Seventy Low-Cost Houses: Memorandum of Agreement
30/06/1986
9-page memorandum of an agreement, drawn as a clarification document establishing the responsibilities of the entities involved with this housing project. Initially, the project was meant for thirty-five families and had a different lot in Santa Rosa de Cabal assigned ...
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Neighborhood of Seventy Low-Cost Houses: House Layout Process
01/01/1986
7-page early draft of eleven steps for the house layout process.
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Neighborhood of Seventy Low-Cost Houses: Photographs of drawings
01/05/1986
Plan of the contour map for the Santa Rosa de Cabal project.
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Neighborhood of Seventy Low-Cost Houses: Photographs of sketches
8 8th step - Continuation of the same process for shaping cross streets
01/05/1986
Eight sketches by Christopher Alexander and Artemis Anninou regarding the site layout and design process, which show a simulation of eight layout consecutive steps to be performed on the actual site, for completing the form of a street with its ...
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Neighborhood of Seventy Low-Cost Houses: Photographs of sketches
9 9) House volume relation to land configuration - 3rd set of cross section diagrams
01/05/1986
Nine sketches by Christopher Alexander and Artemis Anninou showing the sequential steps of the house volume layout and design process, initially simulated and tested on paper and models. A more advanced version of them was implemented on the actual site ...
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The Layout Process of Buildings on the Land - Visualization at Full Scale on Site
Each act of building needs to have a positive effect on its surroundings; to complete them, preserve their structure, make them better, by creating strong centers in them and next to them. Each new building is more alive when it ...
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Users Involved in the Construction of their Project
The benefits of the involvement of the users in the actual construction of their houses under the guidance and management of the architect-builder or the contractor, besides the obvious economical, are manifested in the personal qualities and feeling of these ...
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The Sequence of Unfolding - Generative Codes for the Design Process
In architecture, as in other things, the "right" sequence is of vital importance. It is a generative sequence of progressive differentiations, which allow space to unfold in the right order. Each differentiation acts on the product of the previous ...
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A Pattern Language
1977
“A Pattern Language” is the second volume of “The Center for Environmental Structure Series” on architecture published by Oxford University Press. You can use this book to design a house for yourself with your family; you can use it to ...
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The Nature of Order - An Essay on the Art of Building and the Nature of the Universe.
Book Three - A Vision of a Living World
2005
“A Vision of a Living World”, the third volume of “The Nature of Order” series, presents, for the first time, a full spectrum of Alexander’s and CES built and unbuilt works. The book describes hundreds of buildings, plans, neighborhoods, drawings, ...
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Chapter 11. Further Dynamics of a Growing Neighborhood, 3 / Santa Rosa de Cabal, Colombia
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Chapter 12. The Uniqueness of People's Individual Worlds: 11 / Mass-Housing Where Each Family Make Their Own House Plan for Themselves
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Chapter 15. All Building as Making, 12 / Wabi-to-Sabi: The balance of Rough and Smooth
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An offer from a Planning Dept. student to provide insight for the Low Income Housing project in Colombia and obtain information as well
01/01/1986
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Suggestions for contacts and advice for papers on housing financing, for input in the Santa Rosa de Cabal project
03/10/1990
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Request for copies of the guide manuals used in the project "Neighborhood of Seventy Low Cost Houses"
30/06/2013
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Neighborhood of Seventy Low-Cost Houses: Prototype house construction - Photographs
01/11/1989
Two images of the prototype house in early construction stage, illustrating the first floor construction up to the placement of the lintels.
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Neighborhood of Seventy Low-Cost Houses: Prototype house master builders - Photographs
01/05/1989
Six images with the master builders working on the prototype house construction on wall and lintel completion, plumbing and sewage works.
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Neighborhood of Seventy Low Cost Houses: Reinforced concrete beam and column structure with brick infill - Photographs
01/05/1989
Four images of the prototype house depicting the construction sequence: 1) Starting from the foundation and the initial steps of the brick wall layout before the pouring of the exterior columns; 2) Complreting the first-floor walls and the peripheral beams ...