West Elm · Sofas
West Elm Harmony Modular Sofa Assembly in London
The West Elm Harmony Modular Sofa comes in one box of about 102 kg, nearly 2 metres long. Its legs come off, and its 81 cm diagonal depth is the number that decides whether it turns through your doorway. A vetted JACK pro sets it up in London, legs on and level, for a fixed price before you book.
In short
Yes. A vetted JACK pro in London sets up the West Elm Harmony Modular Sofa: legs fitted, the sofa levelled and any modules joined. West Elm lists Home Delivery & Assembly on Harmony; book JACK when your order came without it, or to take the legs off and refit them to get the sofa through a tight door.
Get matched
Start a JACK request
Native app
Start the request here, then add extra photos or videos from the JACK app if the pro needs more detail.
Harmony Modular Sofa: key facts
- Built size (208 cm sofa)
- 208 cm wide × 112 cm deep × 89 cm high; seat depth 70 cm
- Diagonal depth
- 81 cm: the measurement to check against door and stair widths
- Weight
- About 95 kg built
- How it arrives
- One box, 89 × 112 × 193 cm, about 102 kg
- Legs
- 4.1 cm, removable
- West Elm delivery
- Listed with Home Delivery & Assembly: West Elm's team can build it on delivery day where the service covers your area
Sizes, boxes and weights come from West Elm UK's public product listing. West Elm can change a design or its packaging, so check your own order confirmation, and send it with your request. Last checked 26 October 2026.
How the Harmony Modular Sofa arrives
Harmony is West Elm's deep-seated modular sofa range, and the 208 cm sofa is its simplest piece. It arrives in a single box of about 102 kg, which is heavier than most London front-door deliveries leave easy to move.
The diagonal depth of 81 cm is the useful figure for awkward doorways: a sofa tipped on its back and angled through a door needs a clear opening wider than that. Removing the short legs gains a little more.
What the pro does on the Harmony Modular Sofa
- Unboxed in the room, legs fitted straight with glides on hard floors
- Sofa levelled so the cushions sit evenly
- Modules added later, such as a chaise or corner, joined and lined up
- Where the door is tight, legs removed to get it through and refitted inside
- Packaging flattened and stacked for recycling
Before you book: what to send
- Which Harmony pieces you ordered
- Narrowest door or stair width on the way in
- Floor type
How West Elm assembly is priced
A vetted pro prices your piece from the product link and a photo of the room, and the JACK app shows you that fixed price before you book.
The design moves the price far more than the size. A side table with screw-in legs is a short job. A solid-wood bed with a slatted base, a six-drawer dresser with runners to align, or a sectional sofa whose pieces clip together is a much longer one. Send the product link or a screenshot of the order so the price is for the piece you bought.
Several pieces from one delivery, such as a bed, two nightstands and a dresser, go on one booking for one price. Pieces from other shops can go on the same visit. Where parking has to be paid for, it is added at cost and agreed before you book.
Prefer to pay for the pro's time? Hourly hire works too: as a guide, furniture assembly is typically £35–£75 per hour. For a big delivery, a full-day handyman booking often suits: a flat £350–£400 for up to 8 hours on site.
How it works
Step 1
Share the piece and the room
Paste the West Elm product link or a screenshot of your order (not delivered yet? the link is enough to price from) and add a photo of the room. Mention stairs, a lift or a tight turn on the landing.
Step 2
See the price, pick a slot
A vetted pro prices the build from what you sent. Book once you are happy with the price, choosing a slot after your delivery date; evenings and weekends are available when pros have them.
Step 3
Built, checked, handed over
Parts are counted first, the piece is built and levelled, drawers and doors adjusted, tall pieces anchored and the packaging flattened for recycling. You follow it all in the JACK app.
Frequently asked questions
Will a West Elm Harmony sofa fit through my door?
Compare the 81 cm diagonal depth and the box size, 89 × 112 × 193 cm, with your narrowest door and stair turn. If the box will not go, the sofa can often be unboxed outside the door and carried in on its back.
How much does it cost to have a West Elm Harmony Modular Sofa assembled in London?
It is a fixed price for your Harmony Modular Sofa, worked out by a vetted pro from the product link and a photo of the room, and shown in the JACK app before you book. If you would rather pay for time, hourly hire is typically £35–£75 per hour as a guide, and a full day is a flat £350–£400 for up to 8 hours on site.
Often booked together
Harmony 3-Piece Chaise Modular Sofa assembly
The 310 cm Harmony chaise sectional: three boxes, modules aligned, levelled and joined.
Mid-Century Media Console assembly
The Mid-Century media console in four widths, levelled, with the TV wall-mounted on the same visit.
Mobile Chandelier fitting
The Mobile Chandelier in 74 or 140 cm: assembled, balanced and hung at the right drop.
More West Elm sofas
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All West Elm assembly guides
West Elm furniture assembly in London: beds, sofas, dressers, media consoles and curtains put together by vetted local pros. Fixed price before you book.
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One vetted handyman for a full day at a flat £350–£400 rate — your whole job list done in a single visit.
Jack All Trades (JACK) is an independent London service. It is not part of, affiliated with or endorsed by West Elm or Williams-Sonoma, Inc. West Elm product and collection names are used only to describe the furniture pros put together, and prices are set by JACK pros, not by West Elm.
Get your West Elm furniture built
Send the product link and a photo of the room in the JACK app, see a fixed price from a vetted local pro, and pick a time that suits you.
Get a fixed price in the app