Informal Collaborative Housing: The case of Chile and dwellings in 9x18 lots

  • Rodrigo Tapia Catholic University of Chile


The neighbourhoods 9X18 emerged from a housing policy promoted in the 60s in Chile. They represent today a particular way of collective habitat in relation to their neighbourhood scale and to the interior of each plot. They are territories constituted and built by familiar and community networks. In Santiago, they are 466 neighbourhoods, and 216.000 lots between 160 and 250 m2, with a 38% of public space surface and an excellent pericentral location. Here, there is a lot to observe, learn and protect; and a tremendous potential that needs to be explored and imagined from the understanding of their physical and immaterial patrimony and their opportunities for human-scale densification.

Author Biography

Rodrigo Tapia, Catholic University of Chile

Architect and MSc in Urban Development from Catholic University of Chile. He is currently Consultant of the FOSIS Social Investment Solidarity Fund for the Habitability Program since 2004, Associate Professor at the School of Architecture of Catholic University of Chile, and coordinator of the 9x18 Laboratory of Neighbourhood Regeneration.

How to Cite
TAPIA, Rodrigo. Informal Collaborative Housing. Research in Urbanism Series, [S.l.], v. 5, p. 71-80, oct. 2019. ISSN 1879-8217. Available at: <>. Date accessed: 26 jan. 2021. doi: