A lot of "extensions" these days are electing
Covered Pergola (metal or translucent Lexan)
it extends over edge of house roof, which gets a gutter @ new patio "extension" so is "weatherproof"
it breathes better & fewer bugs
over
Flatwork (sidewalk/driveway) = less than a reif.conc foundation
Katy?
http://rb.gy/ijgqn ???
there's lots of companies out there now
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Ten words or less ... a goal unattainable