How to build a DIY platform bed with storage drawers
A low platform bed can turn an awkward bedroom into a calm, useful space while keeping the floor open and visually light. The best DIY version does more than conceal a mattress: it creates a sturdy support, adds generous under-bed storage and gives you control over the size, finish and joinery. That makes it especially appealing for compact Australian homes where every centimetre affects furniture placement.
Storage drawers are the feature that earns the platform its keep. They can hold linen, seasonal clothing, toys or craft supplies without turning the room into a wall of wardrobes. Building the frame yourself also lets you tailor drawer height to your mattress and choose solid timber, plywood or a combination that suits your budget, tools and decorating style.
Plan the frame around the mattress
Begin with the mattress rather than a standard bed size. Australian king mattresses commonly measure 1830 × 2030 mm and queens 1530 × 2030 mm, although designs differ between brands. Measure the actual mattress and check its support requirements before setting the frame size. Leave around 25–50 mm at the sides and ends, and follow the mattress maker’s required slat spacing so the bed does not sag.
For a king, an outer frame of about 1980 × 2180 mm provides useful clearance beyond the mattress. Draw that footprint in the room, including the space needed to open drawers fully and walk around the bed. Sydney and Melbourne apartments often have tightly placed doors and skirting boards, so remove doors temporarily and check ceiling fans, wall vents and bedside tables before committing to the dimensions.
Sketch the drawer layout next. A centre support beam can divide the cavity into two banks, with two or three drawers on each side, or one deep drawer on each side for bulky items. Set drawer fronts 5–8 mm above the floor for easy cleaning and include finger recesses rather than projecting handles if walkers are likely to catch them. In a strata apartment or rental, check body-corporate rules before fixing anything to a wall.
Choose materials for Australian conditions
A durable frame needs straight, well-seasoned timber and flat sheet material. Construction plywood and hardwood battens sold through Australian hardware chains such as Bunnings or Mitre 10 are practical choices for most homes; spotted gum or jarrah can add character but costs more and varies in availability. Avoid MDF or particleboard for drawer boxes because repeated movement and damp conditions can damage them, especially in humid Brisbane homes or during Melbourne’s damp winters.
Choose full-extension drawer slides rated above the expected load of each packed drawer, generally 30 kg or more. Pair them with quality timber screws or bolts in matched lengths, construction adhesive, dowels and small corner blocks. Metal washers help prevent screw heads sinking into softwood. Keep slides and fasteners in metric sizes that fit the frame, and buy a couple of spare screws before assembly begins.
Build on a clear floor protected with cardboard, and keep outdoor stock separate from indoor components. If the project also includes a verandah refresh, exterior timber and fabrics need their own treatment; this guide to weather-resistant outdoor furniture explains the differences. That separation helps prevent sawdust, moisture or exterior finishing residue from contaminating the drawer runners and mattress platform.
Cut and assemble the structural frame
The following cut list is one workable king-bed version; adapt it only after checking your mattress and room. For a 1980 × 2180 mm outer frame, use two 2180 × 190 × 40 mm side rails, two 1900 × 190 × 40 mm end rails, one 2100 × 90 × 40 mm centre beam, five 90 × 90 × 310 mm legs and 17–19 hardwood or plywood slats measuring 20 × 70 mm and approximately 1900 mm long. Add 70 × 35 mm cleats for the drawers. The dimensions create a 350 mm platform height, but check your own mattress and preferred bed height before cutting.
Cut the long members first with a track saw, circular saw or mitre saw, then use a square to transfer accurate lengths to the shorter rails. Support large sheets on trestles and cut with the correct blade. Clamp every piece before drilling, wear eye and hearing protection, and take care with dust extraction. Label each part and mark the top face so the frame does not end up reversed.
Join the legs to the rails with dowels plus screws or pocket screws, then reinforce the corners with glued blocks; do not rely on screws entering end grain alone. Assemble on the floor, check both diagonals, and tighten only after the frame is square. Fix the centre beam between the inner faces of the end rails so it cannot twist, then add a centre leg and a cleat beneath it to carry the load through to the floor.
Fit the slats across the width, screwing each one into the cleats or rails and using a spacer strip for even gaps. Keep the centre beam square to the frame and confirm that each supported mattress area stays within the manufacturer’s instructions. Clean offcuts can become drawer dividers; when they are too small for that, a small recycled bee hotel gives suitable offcuts a useful garden purpose instead of sending them to landfill.
Build and fit the storage drawers
Make each drawer box from 12–15 mm plywood or solid timber sized to fit between the frame members. For the example frame, two drawers per side could use boxes around 840 mm wide, 650 mm deep and 220 mm high, subject to the actual slide clearance. House the plywood bottoms in grooves or screw them from underneath, fasten the corners with glue and screws, and check every box with a square before adding a front.
Fix the slides to the drawer sides and frame at exactly the same height, following the manufacturer’s hole positions. Full-extension slides give better access but need more depth than a basic model, and a stop prevents the drawer from being pulled out completely. Test one slide with a 20–25 kg load before cutting all the components; this reveals any alignment issue while changes are still easy to make.
Attach drawer fronts from inside the box with screws and plugs so no fixing shows on the face. Leave an even 3–5 mm reveal around each front, soften the finger recess with sandpaper and check that adjacent fronts will not collide when opened. Fit small dividers for socks or accessories, label the deeper drawers if their contents are not obvious, and keep heavy items low and centred.
Finish, install and check the bed
Sand the frame and drawer fronts with 120-, 180- and 220-grit paper, working along the grain and rounding every exposed edge. Vacuum thoroughly, then apply two or three thin coats of a low-VOC water-based finish in a ventilated space. Mask the mattress-support area if needed, leave the drawer runners bare and allow each coat to cure as directed. Paint or stain the fronts before final assembly for a cleaner result.
Move the bed into position with help, protect the floor and level the legs before fitting the mattress. Use the anti-tip kit supplied with the bed, or a purpose-made bed restraint fixed into a stud or masonry rather than plasterboard alone. This matters especially when children climb on the bed, and any wall fixing should meet the rules of a rental, strata plan or body corporate. Test every drawer fully loaded, then check the frame for movement or squeaks.
Give the finish time to cure before loading the drawers heavily, and inspect the fixings again after the first week. Leave some airflow beneath the mattress rather than creating a sealed cavity, which can trap moisture in warm climates. A simple headboard, a wool throw or neutral linen can soften the platform visually without interfering with the drawers, while fitted storage labels make the everyday benefit immediately clear.
Start with the tape measure and one drawer slide rather than ordering a large sheet of timber. Mark the mattress, floor space and drawer openings, confirm the load rating of your hardware, then make a full-size drawing of every part before the first cut. With those checks complete, the build can move steadily from rough timber to a durable, storage-rich bed that suits the room and the way you live.