In this profile of 3D home printer Icon, which raised $185 million in February 2022, The New Yorker explores the promise and challenges of 3D homebuilding and its potential for improving housing affordability. 3D-printed homes remain expensive to build, but companies, such as homebuilder Lennar, which has invested in Icon, believe with scale they can become cheaper to build and more affordable for consumers. In addition, the technology can be applied to multifamily, which will bring much more supply than the current single-family applications.