expand_less Saturday is [[http://www.cohousing.org/openhouse2016|National Cohousing Day]]. A free tour in Oregon's Willamette Valley [[http://www.cohoecovillage.org/blog/2016/04/national-cohousing-open-house-day-april-30-2016/|starts at 10:30 AM at CoHo Ecovillage]] in Corvallis ([[https://www.cohoecovillage.org/contact/|contact]]). (They will also be showing the excellent documentary [[https://www.youtube.com/watch?v=kYo1qOfwos8|Within Reach]] at 5 PM, it's about a lengthy bike trek to communities across the U.S.)
The tour [[http://www.oakleighmeadow.org/calendar/2016/2/28/tour-to-highlight-coho-ecovillage-oakleigh-meadow-cohousing|continues at 3 PM at Oakleigh Meadow Cohousing]] in Eugene (best reached at 541-357-8303). This project is still in process, here's a [[https://www.youtube.com/watch?v=uLo_r1Mu87g|flyover rendering of their project]].
Cohousing hasn't (that I've seen) really cracked the hard nut of affordability, but they tend to have some very thoughtful takes on social & ecological design, and be hubs of interesting activity in their neighborhood/city/region.