An eco-friendly solution to favelas?

Over 1 billion people live in slums in the developing world. Many of them pay nothing and that's one advantage of many slums- no taxes, no deeds or titles, you build it, you inhabit it! However, the high price of living in slums is hardly worthwhile- few public services , whether electricity, water or transportation, high crime, lack of protection or security. Fortunately, governments around the world have been taking a greater interest in investing the public services, access and resource base, including human capital, in slums. And they should- its too large a proportion of the population to ignore!
I'm very impressed to learn of efforts to expand access to land, by facilitating the lower cost and shorter, more streamlined application processes. As far as policymaking, this seems like an win-win scenario but there are some ministries more concerned with lining their pockets than investing the time and energy to make land more accessible to their common man. Anyway, according to the World Bank's Doing Business 2010, Angola, Ethiopia, Mauritius, Rwanda and Sierra Leone were among the few African countries that made it easier to register property this year. In Latin America, Guatemala, Panama and Peru were also positive reformers. But I was also disappointed to note that the countries were it was most costly to register property ( as a percentage of home value, of course) were overwhelmingly in Africa.
Check it out:


http://www.doingbusiness.org/ExploreTopics/RegisteringProperty/?direction=Asc&sort=4

Thats a tangent, by the way!
I'm also so happy to see a broader variety of mortgage options and financial products appear in developing countries. 20 and 30 year extended term mortgages are now making home ownership a reality, not a lofty dream, for the middle-class in Brazil! This is a big deal!


http://www.bnamericas.com/news/banking/Private_banks_set_to_boost_mortgage_lending_50*_this_year

But I'm most hyphy about this:


http://www.inhabitat.com/2009/01/22/5000-dollar-recycled-paper-house

I think this $5,000 eco-friendly durable house is the coolest thing! My friend just bought a house for 8,000 USD in the favela in Rio and it was nowhere as nice or as green as this. Besides governments buying these wholesales and having them assembled( which is unlikely), I wonder how this model could be replicated for urban slum ihabitants en masse