This paper builds on earlier data presented in an Urban Studies paper for a major household survey in 2002 that evaluated the impact of title regularization intervention among low-income homeowners in ten colonias in Starr County, Texas. In 2011 the research team returned to those low-income households, oversampling more than half of them in order to compare and analyse the extent and nature of housing improvement, levels of overcrowding and access to home amenities, and the methods of financing for home improvement and extension. Significant improvements and investments were observed totalling an average of almost US$9000 over ten years, mostly financed out of income and savings, although an increasing trend to seek loans from the formal market was observed. Correlation analysis explores how self-help and self-managed dwelling environments are adapted to family and household dynamics over the life course. Awareness of ‘green’ housing applications and sustainability is discussed.
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