A custom ottoman is mostly a measurement problem
Summary: A custom ottoman is mostly about fitting a gap, matching a sofa height, and choosing the right frame and foam for how it will be used. The fabric matters, but the dimensions decide whether you keep using it.
I've been looking at the same ottoman for two months. It sits at the foot of a Bemz-recovered Ektorp in a friend's flat in Berlin, 1.18 m long, maybe 47 cm tall, deep navy bouclé, wheels you can't see unless you crouch. She had it made because she couldn't find anything that fit between the sofa and the radiator with enough clearance to walk past. The slot was 1.2 m. Every off-the-shelf ottoman she liked was 1.5 m or 90 cm. So she paid someone to fill the gap.
That's the reason most people search for a custom ottoman. Not aesthetics. Geometry.
The three measurements that decide the project
Before fabric, before wood, before colour, before any of the fun stuff, there's three numbers. Get these wrong and the rest doesn't matter.
The first is length. This is usually fixed by where the ottoman has to go. In front of a sofa, you want it 10 to 20 cm shorter than the sofa's seat width on each side. So a 2.2 m sofa wants an ottoman around 1.8 to 2 m if it's running parallel. At the foot of a bed it's the bed's width, give or take 20 cm. In front of a chair it's chair-width, no more.
The second is height. Match the seat height of whatever it sits next to, plus or minus 2 cm. Most sofas in the IKEA-and-up bracket sit at around 43 to 46 cm at the cushion. A 35 cm ottoman in front of a 45 cm sofa looks like a step. A 48 cm ottoman in front of the same sofa is fine for footrest duty but bad for sitting on. If you want both functions, hit 44 cm and don't argue with yourself.
The third is depth. This is where people overspend. An ottoman that's used as a footrest doesn't need to be 80 cm deep. 50 to 60 cm is plenty. 80 cm to 1 m depth is for ottomans that double as a coffee table or a guest seat, and those need legs that hold the load and a top that doesn't sag in two years.
A friend has one that's 1.84 m by 54 cm and uses it for laundry-folding, which is the kind of use case nobody thinks of when they buy off-the-shelf.
What it's actually built from
A custom ottoman is a frame, a deck, a pad, and a cover. Each one is a price decision.
The frame is usually 18 mm birch ply if you want it light and dimensionally stable, or solid hardwood (oak, beech, ash) if you want the legs to be visible and structural. Birch ply with hidden legs is cheaper and almost always strong enough. Solid wood is for ottomans where you can see the joinery, like a low-profile bench-style ottoman with turned legs.
The deck, the platform that holds the cushion, is either webbed elastic straps (springy, comfortable for sitting), pirelli rubber webbing (stiffer, more supportive), or a solid panel with foam directly on top (cheapest, fine for footrest-only). Pirelli is the move for a 110 kg human sitting on a 60 cm cushion. A solid panel is fine if nobody's going to perch on it.
Foam is where everyone gets badly advised. A footrest ottoman wants 6 to 8 cm of high-resilience foam, density around 35 kg/m³. A sit-on ottoman wants 10 to 12 cm at density 40 to 50, with a layer of fibre or feather on top if you want it to look soft when nobody's sat on it. Cheap reflex foam will compress flat in a year and a half.
Cover is anywhere from 35 to 250 euros a metre of fabric, plus 250 to 600 euros for the labour. A 1.2 m by 60 cm ottoman uses about 2.5 metres of fabric if there's no pattern matching. Patterns add 20 to 50 percent because of cutting waste. Velvet eats more than it should because of pile direction.
Where to actually buy one
Three options, ranked by what you're trading off.
A small upholstery workshop will build to your dimensions for 700 to 1,400 euros for a footrest ottoman, more for a sit-on or storage version. Lead time is six to ten weeks. They tend to be honest about whether your frame will work. Bring measurements of the room, a photo with daylight, and the fabric you've already pre-ordered. Don't ask them to source the fabric for you unless you want to pay for that convenience.
The made-to-order route through a brand (Loaf, Made.com when it existed, various smaller European brands) gives you size choice within a fixed range, usually three or four lengths and a couple of heights. If your slot happens to match one of their sizes, this is the cheapest path that still feels custom. If it doesn't, you're back to building it.
Then there's the panel-and-cushion split. Order the structural shell pre-cut from one place, and the cushion and cover from a second. This is awkward to coordinate but can come in 30 to 40 percent under a single-supplier custom ottoman, especially if you can install the legs yourself. It's the path that makes sense when the geometry is unusual (a 1.42 m length in a corner, say, or a wedge for a bay window) and you don't want to pay shop labour twice.
The boring failure modes
People specify the wrong height and live with it. The footrest is the one piece of furniture you use without looking, so a 2 cm error compounds into a sore lower back over a year. Measure the sofa, sit on it for ten minutes, then measure to the back of your knee. That number plus or minus 1 cm is the ottoman height.
People underestimate weight. A 1.2 m by 60 cm ottoman with hardwood frame, foam, and storage drawer is heavier than it looks. Around 18 to 22 kg, more if the cover is dense. If you can't lift it onto a rug alone, the wheels you didn't pay 80 euros to add will become the wheels you wish you'd paid 80 euros to add.
People skip the dust cover under the bottom. It's cambric, costs almost nothing, and stops the inside of the ottoman becoming a fluff archive. If it's missing on a quote, ask why.
If you're trying to fit something into a slot that's 1.42 m wide and 47 cm tall and every brand you check sells 1.5 m or 1.2 m and you've drawn the dimensions on the floor in masking tape twice, that's the kind of gap knuslabs.com was built to close.
If you're planning the same kind of project, start with custom furniture design from room photos or compare it with AI room design for furniture concepts. For adjacent planning detail, read What to figure out before commissioning a custom sectional and Custom upholstered beds, what to know before you order one.