Star Homes prototype yields health gains in Tanzanian villages

A three-year study of rural housing in sub-Saharan Africa has concluded, with 110 prefabricated 'Star Homes' built across 70 villages in Tanzania. Designed by Ingvartsen Architects, led by Jakob Knudsen (dean of the Royal Danish Academy), the homes were part of research conducted by CSK Research Solutions and Ifakara Health Institute. Partners included Mahidol-Oxford Tropical Medicine Research Unit, Durham University, Amsterdam UMC, University of the Philippines Manila, and East, Central and Southern Africa Health Community. The homes use passive engineering: bedrooms on upper floors away from mosquitoes, air-permeable shade-net walls, optimized cross-ventilation, screened windows, self-closing doors, rainwater harvesting, fly-proof latrines, solar lighting, and vented cooking stoves. Compared to traditional cement-block houses, they require 73% less concrete, generate 57% less embodied carbon, and cost 24% less in materials. Children under 13 living in Star Homes experienced 44% less malaria, 30% less diarrhea, and 18% less acute respiratory infections, with reduced stunting. Knudsen called the project groundbreaking for incorporating architecture into a randomized clinical trial with medical rigor. Researchers said the prototypes can be adapted using local materials, noting Africa's population may grow from 1.5 billion to 3.7 billion by 2070, requiring millions of new homes.