those big generic, nauseating houses that you now see in suburbs. They're usually built by "home builders" and are put close together to increase profit for greedy land developers. They're very cheaply built and it probably took more time to ship in the equipment than it did to actually build the damn
thing. On the
outside they look like they are just patches of
different incompatible architecture styles, and they usually look the same. THe yards are full of generic plants and bushes that the builders probably
got from Wal-Mart. The walls are usually made of sheetrock and the backs of the "house" are less showy than their fronts.
Mcmansions have no
real physical or historical value since they can barely last for one generation and they all look the same and are a piss stream's length away from the mcmansion next door.
Mcmansions tend to be bought by
yuppies and soccer moms who just want to look like they're rich and
don't care about actual physical or historical value.
Plus mcmansions contribute to urban sprawl which is bad for the environment since most of the
new suburbs where these mcmansions exist were once rich farmland or irreplaceable woodland.
If you want a good
example of a mcmansion, then if you're ever in
Little Rock, go to Chenal Valley, It's nothing but mcmansions and soccer moms for
miles.