McMansion

In suburban communities, McMansion is a pejorative term for a large "mass-produced" dwelling, constructed with low-quality materials and craftsmanship, using a mishmash of architectural symbols to invoke connotations of wealth or taste, executed via poorly thought-out exterior and interior design.

An example of a McWord, "McMansion" associates the generic quality of these luxury homes with that of mass-produced fast food by evoking the McDonald's restaurant chain.

The neologism "McMansion" seems to have been coined sometime in the early 1980s. It appeared in the Los Angeles Times in 1990 and the New York Times in 1998. Related terms include "Persian palace", "garage Mahal", "starter castle", and "Hummer house". Marketing parlance often uses the term "tract mansions" or executive homes.

The term "McMansion" is generally used to denote a new, or recent, multi-story house of no clear architectural style, which prizes superficial appearance, and sheer size, over quality.

McMansion may refer to oversized and cheaply built homes developed at once in a subdivision, or refer to a dwelling that replaces a smaller house, in a neighborhood of smaller houses, which seems far too large for its lot. (Such a McMansion may lack side windows due to the proximity to the boundaries - another McMansion-related cliché.)

One real-estate writer explains the successful formula for McMansions: symmetrical structures on clear-cut lots with Palladian windows centered over the main entry and brick or stone enhancing the driveway entrance, plus multiple chimneys, dormers, pilasters, and columns—and inside, the master suite with dressing rooms and bath-spa, great rooms, breakfast and dining rooms, showplace kitchen, and extra high and wide garages for multiple cars and SUVs.

...
Wikipedia