Can wooden houses be built anywhere?

We have been told by estate agents all over spain, when looking at rustic plots of land, that building will not be a problem if we build special eco-friendly wooden homes, approved at EU level, that supposedly bypass local planning restrictions (even in national protected parks according to one agent).
The latest is an agent selling a plot of land on the beach...
An urbanisation development has lost its ability to build on the beachfront section of their development, as it is falls foul of recent changes in the law regarding buildings so close to the beach.
but he tells us, we can build on a 4 acre plot, a 250m2 wooden house, with two casitas of 110m2 each. we can have electricity via solar panels / wind turbines. water via a well/ water tank. and drainage via a septic tank.
but that we cannot join town water/electric/ mains sewers.
is this true? is there a magic loophole in the no building in protected zones? do timber-frame houses simply NOT COUNT?

and if so, can you get a mortgage on
a) just land
b) construction mortgage for a wooden house

Has anyone tried this and 'got away with it'? or gotten into trouble?

Hello,

Wooden houses are considered to be illegal as much as a
"bricks and mortar" house is, if built on rural or not urban land. Courts are considering that these properties have a vocation of permanency and serve for human habitation. If in addition to this the plot is so close to the beach that it falls within the special protection area then the illegality of the whole proposal seems strikingly clear.

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Originally Posted by mulberry

We have been told by estate agents all over spain, when looking at rustic plots of land, that building will not be a problem if we build special eco-friendly wooden homes, approved at EU level, that supposedly bypass local planning restrictions (even in national protected parks according to one agent).
The latest is an agent selling a plot of land on the beach...
An urbanisation development has lost its ability to build on the beachfront section of their development, as it is falls foul of recent changes in the law regarding buildings so close to the beach.
but he tells us, we can build on a 4 acre plot, a 250m2 wooden house, with two casitas of 110m2 each. we can have electricity via solar panels / wind turbines. water via a well/ water tank. and drainage via a septic tank.
but that we cannot join town water/electric/ mains sewers.
is this true? is there a magic loophole in the no building in protected zones? do timber-frame houses simply NOT COUNT?

and if so, can you get a mortgage on
a) just land
b) construction mortgage for a wooden house

Has anyone tried this and 'got away with it'? or gotten into trouble?

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These houses are hard to build and maintain.. It is very expensive build.. Most it depends on location.. I have tried it once but not successful.