IKEA BILLY bookcase assembly and shelving in a London home

IKEA BILLY Bookcase Assembly in London

IKEA BILLY Bookcase Assembly in London

BILLY is the bookcase most Londoners own, and it is also the one most often left unanchored. IKEA supplies wall brackets in the box and prints a tipping-hazard warning on the product page, but the screws and plugs that actually hold it to your wall are deliberately not included — because the right fixing depends entirely on what your wall is made of. That single decision is most of what separates a BILLY that is safe from one that is merely standing up.

The carcass itself is not difficult. Cam fittings, a fixed structural shelf, adjustable shelves on pins, and a back panel that slides into a groove down each side. What catches people out is the order of operations, the fact that the cams are hand-tightened with a flat-blade screwdriver and are easy to over-torque into scrap, and that IKEA specifies two people — a 202 cm case is built flat on the floor and then tilted upright.

TaskMan of London assembles and anchors BILLY across the whole of London inside the M25. We carry fixings for solid brick, block, concrete, timber stud and dot-and-dab plasterboard, we check for cables and pipes before every hole, and we do not hand over a tall bookcase that is not fixed to the wall. Send photos of the boxes and the wall on WhatsApp and we confirm everything before you book.

Part of our IKEA assembly London service.

Which IKEA BILLY Bookcase sizes we build

  • BILLY 80x28x202 cm — the volume seller. White art. 002.638.50; oak effect art. 105.089.32; also brown walnut effect and black oak effect. 1 fixed and 4 adjustable shelves, max load 30 kg per shelf. One carton, 206 cm long — package weight 36.85 kg in white, 39.60 kg in oak effect.
  • BILLY 40x28x202 cm — white art. 502.638.38; also oak effect, brown walnut effect, black oak effect and blue. 1 fixed and 4 adjustable shelves, max load 14 kg per shelf. One carton, 207 cm long, package weight 24.30 kg.
  • BILLY 80x28x106 cm — white art. 302.638.44; also oak effect, brown walnut effect and black oak effect. Two adjustable shelves, max load 30 kg per shelf. One carton, 108 cm long, package weight 19.40 kg — much easier to get up a London staircase than the 202 cm units.
  • BILLY 40x28x106 cm — white art. 802.638.32; also oak effect, brown walnut effect and black oak effect. Two adjustable shelves, max load 14 kg per shelf. One carton, 109 cm long, package weight 11.54 kg.
  • BILLY 80x39x202 cm — the deeper carcass, white only, art. 904.019.32. Max load 42 kg per shelf, the strongest shelf in the range. Ships as TWO packages (82 cm long at 28.19 kg and 204 cm long at 19.99 kg package weight), not as a single 2 m carton.
  • BILLY 40x39x202 cm — white only, art. 104.019.31. Max load 22 kg per shelf. One carton, 205 cm long, package weight 29.03 kg.
  • BILLY height extension unit 80x28x35 cm — white art. 402.638.53; also oak effect, brown walnut effect and black oak effect. Its own wall bracket is included. Carton 77 cm long, package weight 6.73 kg. A 40x28x35 cm version is also sold (white art. 902.638.60).
  • BILLY 80x28x237 cm and 40x28x237 cm (the 40 cm version is art. 492.177.34) — bundles of the matching 202 cm bookcase plus its height extension unit, delivered as two separate packages. Also in brown walnut effect and oak effect.
  • Multi-bay combinations currently listed: 160x28x202 cm, 120x28x237 cm, 200x28x237 cm and 240x28x106 cm.
  • Corner combinations currently listed: 95/95x28x202 cm, 136/136x28x237 cm and 215/135x28x237 cm.
  • BILLY / OXBERG with panel doors: 80x41x202 cm in white — two full-height 40x192 cm OXBERG doors over 1 fixed and 4 adjustable shelves, max load 42 kg per shelf. Delivered as four packages: the bookcase in two, each door in its own.
  • BILLY / OXBERG with glass and panel/glass doors: the glass-door case is 80x41x202 cm in white/glass, with tempered glass and a max load of 30 kg per shelf, in four packages; the panel/glass version is 80x41x202 cm in white, also rated 30 kg per shelf; a single-door panel/glass unit in white/glass stands 202 cm tall and 40 cm wide (IKEA's measurement listing gives the depth as 41 cm, its page title as 42 cm), rated 22 kg per shelf and built on the 40x39x202 carcass art. 104.019.31, in two packages; and the shallower 30 cm BILLY/OXBERG family is also live, including 80x30x202 and 40x30x202 in several finishes with panel, glass and panel-glass doors, rated 30 kg per shelf.

Nothing in the BILLY or BILLY/OXBERG range is currently flagged as discontinued or "last chance to buy" on ikea.com/gb — everything listed above was live at the time of writing. One wrinkle worth knowing: IKEA's product copy describes the back panel as fixing "in place with snap fittings – making BILLY easy to assemble and disassemble", yet the assembly manual downloadable today from the GB page for the white 80x28x202 still shows the back sliding into its grooves and then being fixed with small nails and a hammer. Both fixings are in circulation — in new boxes as well as in the older BILLYs we meet on move and rebuild jobs — so we check the instruction sheet in the carton rather than assume either way.

How long IKEA BILLY Bookcase assembly takes

45–75 minutes for a single 80x28x202 cm unit including the wall anchor; 30–45 minutes for the 40 cm-wide 202 cm units and for either 106 cm unit; 60–90 minutes for the deeper 80x39x202 cm, which arrives as two packages and is a heavier, more awkward build. Add 15–25 minutes for a height extension unit — it bolts into existing holes in the top panel and then needs its own wall bracket fitted. Add 20–30 minutes per pair of OXBERG doors for hanging and hinge adjustment. Multi-bay and corner combinations take roughly the sum of their per-unit times, less about 20% after the first unit, because the wall survey, dust protection and setup happen once. These are TaskMan of London's own estimates with two fitters on site; IKEA does not publish an assembly time.

Difficulty: moderate. Long builds are exactly what we are set up for — message us and we will confirm everything before you book.

Where IKEA BILLY Bookcase builds go wrong

The parts of this build that cost people an afternoon:

  • The cams are hand-tightened with a flat-blade screwdriver, and every one of them is over-torqueable. The main bookcase manual calls for hand tools only and shows no drill anywhere; the instructions for the height extension unit go further and print a crossed-out power-drill pictogram against several steps. Keeping a driver off the cams on every BILLY, extension or not, is TaskMan of London's own rule. The cam turns roughly half a turn until it pulls up snug and stops. Keep driving and it spins in its housing and chews the particleboard out from the inside. Because the cams sit in the horizontal parts — the top panel, the bottom panel and the fixed shelf — that is the piece you destroy, and it is not a piece you can hide. A cordless driver on the cams is the single most common way a DIY BILLY gets permanently ruined.
  • The cam bolts screw into the two tall side panels and the cams themselves drop into the top, bottom and fixed shelf. People get this backwards, wind the bolts into the shelf edges instead, and then cannot work out why nothing lines up. Sort the two hardware types into separate piles before you start.
  • A cam bolt left standing proud of the side panel stops the joint pulling tight. You get a visible gap at that shelf line, and the instinct is to crank the cam harder — which is exactly how the cam strips. Wind every bolt down until its collar seats flush against the board first, then start locking cams.
  • Get the order right: lock all the cams fully, and only then slide the back panel down into the grooves routed into the rear edge of each side panel. Whichever fixing your version then uses to secure it — snap fittings or small nails — the back goes in after the carcass is locked, not before. Half-tightening the carcass so the back 'feeds in more easily' leaves you with a case that racks and cams you have to go back and finish blind.
  • Square the carcass on the floor before the back goes in. The back is what stops the case racking, so once it is fixed you have locked in whatever shape you had. Measure both diagonals across the flat carcass and get them equal. A 202 cm case a few millimetres out of square looks fine lying down and then visibly leans once it is stood up — and no amount of shimming will bring OXBERG doors into line afterwards.
  • On the 80 cm-wide units the back panel is wider than the carton, so it arrives creased where it has been folded to fit. That is normal and not a fault, but fitted straight out of the box it concertinas at the creases and springs back out of the grooves. Lay it flat under some weight for fifteen or twenty minutes and gently reverse-flex each crease before you try to feed it in. The 40 cm-wide units do not have this problem.
  • Two back-panel fixings are in circulation, and you cannot tell which you have from the age of the box alone. IKEA's product pages describe a back that fixes in place with snap fittings, yet the assembly manual downloadable today from the GB page for the white 80x28x202 unit still has the back sliding into its grooves and then being fixed with small nails — hammer in the tool list. Check the instruction sheet in your carton before you start: a hammer on a snap fitting breaks it, and a nail punch on a nailed back goes straight through the thin fibreboard.
  • Dry-check the orientation of both side panels against the drilled hole pattern before you lock a single cam. The sides are handed and the hole pattern is not symmetrical top to bottom. On a nailed-back unit you usually discover a panel is upside down only after the back is fixed, and correcting it means destroying the back.
  • The fixed shelf is structural, not optional. On the 202 cm units it is one of five shelves — one fixed and four adjustable — and it is cam-locked into the sides. Customers sometimes ask for it at their preferred height, or leave it out meaning to fit it later. Without it the case racks under load however well the back is fixed. The 106 cm units are shelved differently, with only two adjustable shelves included, so do not assume the layout carries across.
  • Shelf pins are easy to get one hole out on one side. The sides are drilled full height with closely spaced holes, and a shelf that is one hole out rocks and reads as subtly wrong across the whole case. Count hole positions from a fixed reference on both sides, do not eyeball it.
  • A height extension unit does NOT need drilling. The holes for the two cam bolts are already in the top panel of the bookcase below, and IKEA's assembly instructions for the extension call for screwdrivers only — no drill and no hammer. Anyone reaching for a drill here is about to put permanent visible holes in a customer's finished top panel for no reason.
  • BILLY has no adjustable feet — it sits on its base. On old London floorboards or springy chipboard over joists the case has to be packed and levelled before the wall fixing goes in. Anchor it first and the bracket ends up permanently holding a lean it was never designed to carry.
  • Deep Victorian and Edwardian skirting stops the case sitting flat against the wall — it stands off at the bottom and leans back at the top. Either scribe or notch the base, or pack behind the top, but the anchor brackets then have to be set to suit. Pulling the brackets up tight against a case that is already tilted just locks in the tilt.

Safety and wall fixing

This item must be secured to the wall. We fit the restraint as part of the job and will not leave it standing loose.

  • IKEA supplies wall brackets in the box — two of them, with their screws and washers — and they mount on the top face of the top panel. The printed warning is explicit: serious or fatal crushing injuries can occur from furniture tip over, and the product must be used with the wall attachment device(s) provided. TaskMan of London does not leave a BILLY unanchored, on any job.
  • Screws and plugs for the wall are deliberately not supplied. IKEA's own wording is that screw(s) and plug(s) for the wall are not included, that you should use screw(s) and plug(s) suitable for your walls, and that if you are uncertain you should seek professional advice. We carry fixings for solid brick, block, concrete, timber stud and dot-and-dab.
  • Dot-and-dab plasterboard is the wall type that gets anti-tip fixings wrong, and this matters more than anything else on this page. A plasterboard plug alone is not an anchor for a 202 cm case. Neither is a long screw and plug pushed through the cavity into the blockwork behind, which is what most people reach for — as you tighten it, the screw crushes the plasterboard, the board compresses, and the fixing loses its clamp. The correct specification for an anti-tip restraint across a dot-and-dab cavity is a bridging or collar fixing (the Corefix type), or a proper sleeve anchor that spans the void and bears on the block, so the board is never carrying the load. UK dot-and-dab typically leaves roughly a 10–25 mm cavity behind 12.5 mm board.
  • The 80x28x202 cm BILLY is 202 cm tall on a 28 cm deep footprint — a little over 7:1. It is one of the most tip-prone shapes in a normal home, and it goes over most easily when it is loaded high, when a child climbs or pulls on a shelf, or when a loaded OXBERG door is swung open. Load the heaviest items on the lowest shelves.
  • Maximum shelf load is not one number across the range — it depends on the variant, and assuming 30 kg everywhere is a real overload risk. IKEA rates the 80x28 cm units at 30 kg per shelf, the 40x28 cm units at only 14 kg, the 40x39 cm at 22 kg and the deeper 80x39 cm at 42 kg. The narrow 40 cm units are the ones customers routinely overload, because they assume a smaller case means the same shelf rating.
  • IKEA specifies two people for BILLY assembly — its instruction sheet shows a lone assembler crossed out beside two people working together. This is not a formality on the 202 cm units: the case is built flat and then tilted upright, and one person doing that alone risks racking the carcass or dropping it.
  • The height extension unit is a separate anchoring job. It has its own wall bracket in its own box, and fitting one raises the assembly to 237 cm and changes how it behaves in a tip. The extension gets anchored too — not just the case underneath it.
  • You need clear space between the top of the unit and the ceiling to fit the brackets at all. IKEA states it directly on the product page: you need enough space between the top of the furniture and the ceiling to be able to anchor the product to the wall. Where the ceiling is too low for that, the honest answer is a shorter BILLY, not a tall one left unanchored.
  • Every anchor hole gets a cable and pipe detector check first — TaskMan of London's own rule, no exceptions. Services run in predictable zones around sockets and switches in theory, but London walls are full of historic work that does not follow the zones.
  • If a BILLY is moved or re-sited, it gets re-anchored at the new position before anything goes back on the shelves. Not afterwards, and not left over the weekend.

IKEA BILLY Bookcase assembly in London homes

Getting the box into the room is often the harder half of a London BILLY job, and it comes down to one dimension. The 80x28x202 carton is 206 cm long with a package weight of 36.85 kg in white or 39.60 kg in oak effect; the 40x28x202 is 207 cm and 24.30 kg; the 40x39x202 is 205 cm and 29.03 kg. A rigid two-metre box is what a flat lift car and a Victorian conversion stair with a half-landing dogleg struggle with — so we check access with you beforehand rather than discover it on the landing. Two useful exceptions: the deeper 80x39x202 splits into an 82 cm package and a 204 cm package rather than arriving as one long carton, and both 106 cm units come in cartons of about 108–109 cm and 11.5–19.4 kg, which go almost anywhere. Walls then decide the anchoring, and London splits three ways. Period conversions in Hackney, Camden or Wandsworth give lath-and-plaster or timber stud, where the fixing has to find a stud and nothing else will do. New-build and refurbished flats across the Docklands, Nine Elms and the outer boroughs are overwhelmingly dot-and-dab plasterboard over blockwork, with roughly a 10–25 mm cavity — this is where a long screw and plug feels tight and is not adequate for a tip restraint, and where we fit a bridging or sleeve fixing that bears on the block instead. Ex-local-authority blocks are dense concrete or engineering brick and need an SDS and the right plug. Ceiling height drives the product choice: Victorian and Edwardian rooms at 2.7–3.2 m are exactly why customers want the 35 cm height extension, but a 2.4 m new-build ceiling leaves only about 3 cm above a 237 cm assembly — not enough to fit the wall bracket, so we will steer you to a 202 cm unit rather than sell you an extension that cannot be safely fixed. Two more London specifics: deep period skirting stops the base sitting flat against the wall and needs scribing or packing, and chimney-breast alcoves — the reason most Londoners buy BILLY at all — are rarely a neat multiple of 80 cm or 40 cm, so measure the alcove and talk to us about the mix of widths before you buy. Finally, loading and unloading in a controlled parking zone needs planning; tell us the parking situation when you book.

Before we arrive

  • Clear roughly 2.2 metres of open floor in front of the wall for a 202 cm unit. BILLY is built flat on its back and then tilted upright, so we need most of its own length in clear space plus room to walk around it.
  • Tell us what the wall is made of, or send a photo on WhatsApp: solid brick, plasterboard on timber studs, plasterboard dot-and-dabbed onto blockwork, lath and plaster, or concrete. This decides which fixings we bring, and it is the single most useful thing you can tell us before the visit.
  • Check access before delivery day. The 80x28x202 carton is 206 cm long with a package weight of 36.85–39.60 kg depending on finish; the 40x28x202 is 207 cm and 24.30 kg. A long rigid box can be tight in a small flat lift or on a Victorian conversion staircase with a half-landing turn, so it is worth walking the route in your head before the van arrives. Worth knowing: the deeper 80x39x202 does NOT come as one long box — it splits into an 82 cm package and a 204 cm package — and the 106 cm units come in cartons around 108–109 cm, which go almost anywhere.
  • Have the boxes in the room where the bookcase is going if you can, and tell us if they are not. Moving them is fine, we just need to allow the time.
  • Empty any existing shelving that is being replaced. We cannot safely move a loaded unit, and an unanchored loaded bookcase is precisely the hazard we are there to remove.
  • Flag underfloor heating, recently rewired walls, concealed pipework, or anything you know sits behind the plaster, before we drill.
  • Measure your ceiling height if you are considering a height extension unit. A 202 cm case plus a 35 cm extension is 237 cm, and you need clearance above that to fit the wall brackets on top.
  • Note the depth of your skirting board, especially in a period property — it affects how the case sits against the wall and whether the base needs scribing or packing.
  • Keep children and pets out of the room while we are assembling and drilling.
  • If you want OXBERG doors, extra shelves or a height extension, buy them at the same time so everything can be fitted in a single visit.
  • You do not need to help. IKEA specifies two people for BILLY and we send a team that can handle it — we just need the space.

IKEA BILLY Bookcase assembly FAQs

Does a BILLY really have to be screwed to the wall, or is IKEA just covering themselves?

It really does. IKEA puts wall brackets in the box and prints a warning that serious or fatal crushing injuries can occur from furniture tip over, and that the product must be used with the wall attachment device(s) provided. A 202 cm case on a 28 cm deep base is genuinely unstable once it is loaded, and it goes over most easily when a child pulls on a shelf or climbs it. TaskMan of London does not hand over an unanchored tall bookcase. If your wall genuinely cannot take a proper anchor, we will tell you before we start rather than after.

My old BILLY had a back panel you hammered in and the new one just clips. Did I get the wrong box?

No. Two back fixings are in circulation and both are correct for their box. IKEA's product pages describe the back panel as fixing in place with snap fittings — it presses in by hand and, usefully, can come off again if you move. But the assembly manual IKEA supplies today with some units, including the white 80x28x202, still has the back sliding into its grooves and then being fixed with small nails. So go by the instruction sheet in your carton, not the age of the unit. The two need different handling: a hammer on a snap fitting breaks it, and the nails on a nailed back should never be driven with a punch through what is quite thin fibreboard.

I live in a new-build flat and everyone says the walls are hollow. Can you still anchor it?

Almost always yes, but not with the fixing most people use. Most London new-builds are dot-and-dab: plasterboard stuck onto blockwork with roughly a 10–25 mm cavity behind it. A plasterboard plug holds very little. The common workaround — a long screw and plug pushed through the void into the block — is also not good enough for an anti-tip restraint, because tightening it crushes the plasterboard and the fixing loses its grip. What actually works is a bridging or collar fixing, or a sleeve anchor, that spans the cavity and bears on the blockwork so the board never carries the load. We carry these as standard. Send us a photo of the wall on WhatsApp and we will confirm before the visit.

My shelves have started to bow. Can that be fixed?

Partly, and it is worth checking what your unit is actually rated for first — it is not the same across the range. The 80x28 cm BILLY is rated at 30 kg per shelf, the 40x28 cm at only 14 kg, the 40x39 cm at 22 kg and the deep 80x39 cm at 42 kg. Plenty of bowed shelves are simply overloaded. A shelf that has already bowed will not straighten on its own. What we can do is redistribute the load so the heaviest books sit low, turn shelves where the bow allows, add shelves to shorten the unsupported run, or fit a discreet timber lip to stiffen a span. We will tell you honestly which is worth doing on your unit.

I already own a BILLY. Can you add a height extension unit to it?

Yes, and it is a common job in high-ceilinged London flats. No drilling is involved — the holes in the top panel of your existing bookcase are already there, and IKEA's assembly instructions for the extension call for screwdrivers only, nothing more. If anyone reaches for a drill at this step, stop them. What you do need to think about is height and anchoring: the finished assembly is 237 cm, it has to be re-anchored, and the extension brings its own wall bracket that mounts on top. You need clearance above 237 cm to fit that bracket, so a standard 2.4 m new-build ceiling is very tight and often not workable.

Can you take a BILLY apart when I move and rebuild it in the new flat?

It depends on which back fixing your unit has — check before we plan the job. A snap-fitting back is designed to come off and go back on — IKEA's own copy calls BILLY easy to assemble and disassemble — so those units travel well. A nailed back is effectively single-use: the small ridged pins do not come out cleanly and the fibreboard tears, so we would plan on a replacement back panel. Either way, cam fittings in particleboard will take a rebuild or two but get looser each time. Tell us it is a move rather than a fresh build and we will plan the fixings accordingly.

How do I get a quote and book?

Send photos of the flat-pack boxes and of the wall on WhatsApp, and TaskMan of London will confirm everything with you — what the job involves, how long it should take and when we can come — before you book. The team is DBS-checked and insured, the work carries a 12-month workmanship warranty, and we cover all of London inside the M25.

Book IKEA BILLY Bookcase assembly in London

Send us a photo of the boxes or the product name, your postcode and when suits you. We will come back with everything confirmed before you book — no obligation, no call-out surprises.

WhatsApp us to get started or call 07700 170 070, 7 days a week.

Every job is done by TaskMan of London's own DBS-checked, insured team and carries our 12-month workmanship warranty.