Mr. Blandings Builds His Dream House is a 1946 comedy novel written by American author Eric Hodgins (1899 - January 7, 1971) and illustrated by American cartoonist William Steig (November 14, 1907 ? October 3, 2003), describing the vicissitudes of buying a home in the country. It originally appeared as a short story in the April 1946 issue of Fortune magazine.

It was adapted as a movie of the same name, released in 1948, which starred Cary Grant, Myrna Loy, and Melvyn Douglas. Later two radio adaptations were also performed, with Grant in the leading role.

It was the basis of the 2007 film called Are We Done Yet?.