While some artisans specialize in furnishings and décor, Mr. Toledo focuses on the architecture, selling complete dollhouses as well as individual rooms — like a bathroom in a shadow box — for as much as $20,000. He designs the rooms by hand, milling moldings and using miniature tools, like a table saw the size of a shoe box, for carpentry work.

The advent of 3-D printers has opened the door for people without such advanced woodworking skills, too — to the disappointment of traditional dollhouse makers, who view such technology as taboo. Ms. Coffee of Walla Walla, for example, uses a 3-D printer to make smaller objects, like decorative pumpkins, which she sells for $5. She makes other items, such as throw pillows, using everyday materials and tools like glue, fabric, tweezers and quilt batting.

A year into her craft, Ms. Coffee now sells enough printable herringbone floors and cowhide rugs on her website to turn a profit, although still not enough to give up her day job as a graphic designer. She also uses the dollhouses to work out design challenges in the real-life houses that she and her husband renovate and flip. If she’s not sure about a floor color or a pattern for a rug, she can try it out on a tiny scale for a few dollars. Her actual home has the same rustic wide-plank flooring as her dollhouses.

While miniatures have long had their enthusiasts, this new generation of dollhouse makers is turning to idealized contemporary homes at a time when the real-life version is increasingly out of reach for many Americans. High real estate prices and stagnating wages make it difficult for many homeowners to consider a $100,000 kitchen with a farmhouse sink and a Wolf stove. But you could have a very little one — or three of them, and fill them with teensy espresso makers, cheese boards and bottles of Dom Pérignon. Like the idea of a barn door, but don’t actually have a place to install one? Tuck it into the dollhouse attic, and if it grows tiresome, refurnish the entire room with rattan chairs, a shag rug and a soft pink palette.