The book "Sketch: Houses" showcases 27 unique houses designed by architects, featuring a mix of drawings, sketches, and computer models. This allows readers to see how architects envision and create residential architecture, from initial drafts to final presentations. The houses include innovative designs like a seasonally adjustable Holiday House and a stainless steel-encased Innauer House. The book's diverse range of houses and informative presentation offer a fresh perspective on architectural design.