The open side of a sectional is where a living room either comes together or trails off. You don’t need a second sofa to fix it, just an ottoman or a pair of chairs placed with some thought. These 9 modular sofa arrangement ideas show how.

9 Modular Sofa Arrangement Ideas Using Ottomans and Chairs Instead of a Second Sofa
Modular sofas come in separate pieces that connect, so you can shape them to fit the room. The pieces usually cover only two or three sides of the seating area, and what goes on the open side decides whether the room feels finished.
Each room below solves it without a second sofa. Some use one big ottoman as the table, some use two chairs, and a couple use both, so there’s a fit for most living rooms. Here’s how each one pulls it off.
Two Chairs in the Sofa’s Own Color

Lounge ends on both sides can weigh a sofa down fast, especially in deep green. Two velvet armchairs in nearly the same olive close the open side, and because the color matches, they read as part of the set. Slim black legs keep the chairs from looking bulky, and a cube ottoman at the rug’s edge adds one more seat.
Same Fabric, No Coffee Table Needed

Cut from the same textured fabric as the sectional, the ottoman nearly disappears into it. It fills the inside corner like one more section, so nothing looks tacked on. A wicker tray holds the vase and keeps the top tidy, and the dark patterned rug stops all that beige from floating. Slide the ottoman out whenever you want a footrest.
Fireplace on One Side, View on the Other

Put the chairs on the fireplace side, turned toward the sofa, and whoever sits there gets the fire beside them and the fall trees in the windows straight ahead. One chair is leather and wood while the other is dark green and textured, which keeps a gray sofa from feeling like a matching set. The open shelf under the table stores throws.
Let the Ottoman Carry the Pattern

When the sofa itself is already textured, the pattern belongs on the ottoman. Its green-and-black check repeats the sage pillow and the dark art above, so a bold print looks planned instead of random. A yellow tray keeps the top flat for books and flowers.
Colors Borrowed Straight From the Pillows

Friday night with extra guests, this setup works without dragging chairs in from the dining room. Two round velvet ottomans, one slate gray and one rust, borrow their colors from the pillows and slide wherever you need a seat or a table. The cream sectional and tall arched window keep it bright, and more soft, sunlit rooms like this show how far that can go.
Chairs That Look Good From Behind

Soft white sofa, deep mocha chairs: that contrast stops the room from going flat. The rounded, barrel-style backs matter too, since the chairs face the sofa and their backs are what everyone sees first. They swivel, so one turn points them at the big windows or back at the couch, and a wide square table fills the middle.
A Sectional That Doubles as a Wall

With its back to the kitchen, the sectional works as the line between cooking and lounging, no wall needed. A big square table fills the middle, and a brown leather armchair closes the open end so the group doesn’t trail off. Fluffy white and brown pillows keep the beige from going flat, and the whole room feels like a space that’s naturally put together.
Extra Seats That Park Against the Table

Pushed right up to the coffee table, these round stools take almost no floor space. Their thick, looped fabric is called bouclé, and it feels like lamb’s wool. Slide them out when friends come over and a sofa with a chaise suddenly seats two more. Cream stools on a cream sofa mean the room stays calm even with extra seats pulled out.
Soften the Corner With a Round Ottoman

Nobody bumps a shin on a round ottoman, which is why it sits so well beside a sectional’s sharp corner. The tan leather wipes clean when a drink tips, and the woven tray keeps cups from sliding. Two wood-frame chairs sit across on the open side, and their slim frames let the light rug show through, so the group still feels roomy.