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Posted By: Markjh1987in your opinion has the 'green building' worked? could it be used as a benchmark for a similar building?

Nothing particulary 'green' about Tony's House, but it has very low energy use (though changing the light bulbs may help a bit more )

A lot of this 'Green, Eco, Sustainable, Natural' terminology is very misleading. Much depends on definition. And the Brundtland definition is just idealistic wishful thinking.

Thing to remember is that it is about a house, not about society in general. So it comes down to valuing nature and swapping natural capital (a bit of land) for man made capital (the building). So you can get two extreme examples that would both pass or fail the 'sustainability' test if you so wished.

you need to define 'green' - for example, does this mean built from locally sourced, sustainable materials, such as the 'Grand Design' woodland house http://www.ben-law.co.uk/ ; or built with brick and concrete but to passivhaus standards, (low energy input needed) http://www.passivhaustrust.org.uk/; or low embedded CO2 materials http://www.bsria.co.uk/news/embedded-carbon/ ; or a more old-fashioned green approach, such as http://www.cat.org.uk/ ; or ... the list goes on
You can see that some definitions of 'green' would exclude most other possible definitions.
Do your own research, and choose a definition where you are likely to get more information from easily available resources.