further blurring the lines between formal and informal economies. Professional building tradespeople seem to have a future not simply as builders but as consultants to D-I-Yers in their communities, similar to urban permaculturalists and city farmers. Again, we have a central role of education and knowledge-networking. While such possibilities have yet to influence building assessment systems like LEED, they have been implicitly recognized in some of the home greenup auditing programmes, many of which have been cognizant of the multiple benefits, social, environmental and economic (including job creation) of retrofit work.