After 2-1/2 months process, got the residency visa. The procedure is long than expedited, but result is good. And took one day to get the cedula in Guayaquil, just need the document from visa officer($4) and copy of passport & visa, after took photo and finger print, took 2 hours and cost $5. I heard it need 2 days before.
The 2nd plan is build a simple house nearby coast. What I want in mind is simple, sustainable, and cheap. The material is bamboo and concrete, site area is about 100m2, 2-storey house will look like this:
The Framework is concrete,
The 1st story is open kitchen, dinning room, living room, with a bath room. The floor is concrete tile, wall is half, made by bamboo, with plant green. Need a ceiling to dust-proof, not sure the material, as the 2nd floor is wood.
The 2nd story is divided with 3 or 4 rooms, with corridor/balcony and a bath room, no shower. The floor is wood, the others, wall, roof is bamboo.
Using natural lighting for the kitchen: soda bottle light, and mirror(light shelves).
About water-proof for the 2nd story bath room, not sure the material.
After got visa, 2nd plan to build house
the sample of corridor, open kitchen:
brick paver
Congratulations on the visa and good luck with the house.
I know you spent some time looking around Ecuador trying to decide where you wanted to live. What was it about the Guayaquil or the nearby Guayaquil area that led to your decision to live there?
I like Cuenca, but can't stay high elevation for long time; and not retired yet, need to do something, it's better to near cities.
found this:http://www.worldbank.org/.../ecuador-innovates-with... , anyone contact INBAR and the Corporación Hogar de Cristo before?
Shall I just buy one from there: http://www.hogardecristo.org.ec/viviendas.html,
From article on link netbean posted
"Since the walls (panels) and structure of the house are pre-fabricated, the new technique using bamboo enables houses to be completed in just two weeks. Bamboo houses can last several years if properly maintained."
Wouldn't people want a house that lasted more than several years?
http://www.inbar.int/news-category/bamboo-construction/ from here: one of our new bamboo homes costs $4000 in Ecuador and lasts up to 30 years, the average cost of a traditional informal bamboo shelter costs $1500 and needs to be replaced every five years.
I think about combine the concrete and wood and bamboo. The wall, roof, the outside using bamboo is fine. "The walls and the cover material of the roof being replaced every 4-5 years"(1). Build the concrete column first, then install the wood floor, then buy the upside house from Hogar de Cristo 
(1, structural adequacy of traditional bamboo housing in latin america)
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