It seems that everywhere you turn online, you see another picture of a fabulous modular home, built in a factory but looking every bit as good as any home built on-site. But looks can be deceiving.

One day in February, it was an empty, snow-covered lot in Bethesda. In 32 hours, the property held a six-bedroom, six-and-a-half-bath French country mansion with a walkout basement. The ...

Set on a vineyard in California’s Napa Valley, a compound intended to entertain a large family is in the early stages of design. In addition to the main residence—in what Oakland, California-based ...

In 1998, Sheri Koones left the canyons of Manhattan for suburban Greenwich, Conn., where she and her husband Rob had bought a 45-year-old house that they deemed the perfect place to raise their two ...