---
title: "Shallow Depth Floor Sofa: How Far Below 39 in Can It Go?"
url: "https://cushionguide.com/answers/floor-sofa-shallow-seat-depth/"
section: "The Cutting Table"
author: "Nate Kowalski, The Pattern Engineer of Detroit"
author_url: "https://cushionguide.com/masters/nate/"
published: "2026-07-06"
updated: "2026-07-06"
keywords: "shallow depth floor sofa, floor sofa seat depth, custom depth modular floor sofa, narrow floor sofa for small nook, 30 inch deep floor sofa"
---

# Can the floor sofa seat be made less deep than 39 inches?

*Depth on a floor sofa is shared property. The backrest takes its cut first; the seat gets what's left.*

Also asked as: 30 inches possible instead of 39 inches?; 110 inches long and 29 inches deep

> **The quick answer:** Sometimes: the floor sofa's standard 39 in (100 cm) depth has been made as shallow as 30 in (76 cm) from a note in the personalization box. Backrest cushions take part of that depth, though. At 28 in (71 cm) total, only about 16 in (41 cm) of seat remains, and the shop advises against 29 in (74 cm). Non-standard widths may not fit the L-shaped backrest.

![Dusty rose and cream velvet floor sofa below a shelf of trailing pothos, with knit blanket, mug and open book on the floor](https://cushionguide.com/media/modular-floor-sofas/dusty-rose-floor-sofa-pothos-shelf-reading-corner-1600.webp "A lived-in reading corner: floor sofa, trailing plants, a knitted blanket and coffee within reach.")

## Key facts

- Standard floor sofa depth is 39 in (100 cm).
- A 30 in (76 cm) depth has been made from a note in the personalization box.
- At 28 in (71 cm) total depth, the seat area is about 16 in (41 cm).
- The shop advises against 29 in (74 cm) once backrests are in place.
- A 48 in (122 cm) wide single module can be made, but the L-shaped backrest won't fit it.
- The floor sofa ottoman is 39 in (100 cm) deep.

## Total depth against the seat you actually get

| Total depth | Seat in front of the backrest | Workshop's answer |
|---|---|---|
| 39 in (100 cm) | Full standard seat | The default |
| 30 in (76 cm) | Reduced | Made once from a personalization note; another request was pointed to the ottoman |
| 29 in (74 cm) | Not enough to sit on | Advised against |
| 28 in (71 cm) | About 16 in (41 cm) | Possible, but tight |

## Where the depth goes

A floor sofa is a seat with a backrest cushion parked on it. The depth you order is the total, front edge to wall, and the backrest sits inside that number.

Run the 28 in answer backward: 28 in total, about 16 in of seat, so the backrest cushions are using roughly 12 in (30 cm). The backrest doesn't shrink just because the sofa does, which is why the seat disappears fast below about 30 in. The workshop's replies aren't unanimous, partner: one 30 in request got a yes, another got pointed to the 39 in ottoman. Treat 30 in as the floor, not the target.

Width has its own catch. Change a module's width and the standard L-shaped backrest may stop fitting; a 48 in (122 cm) single module has been made, but without the L backrest. The [modular floor sofas](https://cushionguide.com/cushions/modular-floor-sofas/) hub shows the standard pieces, the [buying guide](https://cushionguide.com/guides/floor-sofa-buying-guide-height-space/) covers room planning, and [seat depth](https://cushionguide.com/glossary/#seat-depth) is defined in the glossary.

## Before you ask for a shallower sofa

- ✓ Measure the nook from the wall to where you want the front edge, ± ¼ in
- ✓ Subtract about 12 in (30 cm) for the backrest to see your real seat
- ✓ Keep the standard 39 in width if you want the L-shaped backrest
- ✓ Write the depth you want in the personalization box
- ✓ Look at the [small-apartment layouts](https://cushionguide.com/concepts/small-apartment-floor-sofa-layouts/) before shrinking anything

> **Tailor's margin:** On a floor sofa, backrests eat depth: a sofa 28 in (71 cm) deep leaves only about 16 in (41 cm) of seat in front of them.

> Floor sofa depth under about 30 in (76 cm) gets tight: 39 in (100 cm) is standard, and the backrest cushions claim roughly a foot of it.
>
> — Nate

## Buyer questions

**A common question:** Could you make the floor sofa 110 in long but only 29 in deep?

**The workshop's answer:** The shop advised against it: a 29 in (74 cm) seat doesn't leave enough room to sit once the backrest cushions are in place.

**A common question:** Can I get the sofa shallower, around 30 in?

**The workshop's answer:** In that case the shop pointed to the ottoman, which is 39 in (100 cm) deep, rather than offering a 30 in version.

**A common question:** Can the sofa be 30 in deep instead of 39 in?

**The workshop's answer:** Yes. The buyer wrote the 30 in depth in the personalization box, and the sofa was made to that size before shipping.

**A common question:** Could you make a very narrow floor sofa, about 28 x 72 in, for a small nook?

**The workshop's answer:** Yes, but at only 28 in (71 cm) deep, the seat left in front of the backrest would be about 16 in (41 cm).

**A common question:** Can a single floor sofa module be 48 in wide?

**The workshop's answer:** The standard single module is 39 in (100 cm) wide. A 48 in (122 cm) version can be made, but the L-shaped backrest won't fit it.

## Questions buyers ask next

### How much depth do floor sofa backrest cushions use up?

Going by the workshop's 28 in (71 cm) example, which leaves about 16 in (41 cm) of seat, the backrest cushions take roughly 12 in (30 cm). Subtract that from any total depth to see the seat you would really get.

### What depth is the standard modular floor sofa?

39 in (100 cm) for the seat modules, and the matching ottoman is 39 in deep too. Shallower depths are possible on request, but below about 30 in (76 cm) the workshop discourages it because too little seat is left.

### If I change a module's width, will the L backrest still fit?

Not always. A non-standard width can stop the standard L-shaped backrest from fitting: a 48 in (122 cm) single module has been made, for example, but without the L backrest. Ask before you order a changed width.

## Related at the atelier

- [Can the floor sofa be made smaller or narrower to fit my space?](https://cushionguide.com/answers/floor-sofa-custom-smaller-size/): Yes, a floor sofa can be made smaller: order the standard listing and write your width in the order note, such as 60, 65 or 70 in.
- [Can the floor sofa be made longer than the standard 79 in (200 cm)?](https://cushionguide.com/answers/floor-sofa-longer-custom-length/): Only a little as a single piece: the standard floor sofa is about 79 in (200 cm), and extensions to roughly 82-90 in (208-229 cm) have been quoted, with a surcharge and extra processing time.
- [Can the L-shaped floor sofa be made to fit my wall dimensions?](https://cushionguide.com/answers/custom-l-shaped-floor-sofa-size/): Yes, within limits: a custom L-shaped floor sofa is built from two sofas resized to your wall runs, each section 39 in (100 cm) deep.
- [Modular Floor Sofa in Mustard and Cream Velvet for Small Rooms](https://cushionguide.com/readings/mustard-cream-velvet-floor-sofa-macrame-wall/): A modular floor sofa makes a narrow room feel larger because its low seat leaves the wall above it empty and keeps sight lines open.
- [Floor Sofa in Teal and Cream Velvet: The Finishing Details](https://cushionguide.com/readings/teal-velvet-floor-sofa-bookcase-monstera/): A velvet floor sofa looks hand-finished when its two colors meet on a straight seam, the pile runs the same way on every piece, and the box edges stay clean without piping.
- [Modular Floor Sofa Module: Firmness of One Tufted Seat](https://cushionguide.com/readings/mid-gray-tufted-floor-seat-line-art-wall/): A single modular floor sofa module works as a complete floor chair when the tufted seat is firm and the back cushion and bolster are soft.
- [Is a floor sofa right for you? Floor couch height, back support and space](https://cushionguide.com/guides/floor-sofa-buying-guide-height-space/)
- [Can you sleep on a floor sofa? Bed size, firmness and sheets](https://cushionguide.com/guides/floor-sofa-bed-size-firmness/)

*± 1/4 in — Nate*

---

Written by Nate Kowalski (https://cushionguide.com/masters/nate/) for CushionGuide (https://cushionguide.com/about/). The site explains made-to-measure cushions and the partner workshop makes them; measurements are in inches first. This Markdown mirrors the page at https://cushionguide.com/answers/floor-sofa-shallow-seat-depth/