Customers can adjust the size of the sectional to the exact dimensions they need, ensuring a perfect fit for their living space. Buyers use the handy SIZEiT™ app to design their sofa.

2) Hamilton. The Hamilton sectional has that crisp, tailored look that just fits with modern spaces. You can play around with the size, layout, and fabric, so it’s not a one-size-fits-all deal.

Stephanie Feinerman Inherited This Groovy 1960s Custom Sofa From Her Grandparents. It’s the ... Authentic Milo Baughman Thayer Coggin 3 Part Sectional Sofa Mid-Century Modern. $7,500. 1stdibs.