Brett Field
A walk-in robe needs to be at least 1,390 mm wide for storage on one side, and about 1,950 mm wide for hanging and shelves on both sides, according to Houzz designer Sally Hart. The planning site dimensions.com allows a little more: 1,520 mm for one side.
No building code sets a size for a walk-in robe, so these figures come from Houzz design guides and a planning reference, checked on 27 October 2026. Below are the sizes for each layout, the walkway, doors, light and air, how to measure a room, and the Queensland rules.
What is the smallest walk-in robe that works?
About 1.4 m wide and 1.2 m long, which is roughly 1.7 m2 of floor (our sums). That is a one-sided robe: storage along one wall and a walkway beside it. The two sources differ a little on the width.
| Source | Smallest width | What it allows |
|---|---|---|
| Houzz, Sally Hart (2017) | 1,390 mm | Storage on one side only. She calls it "how tight can you go" |
| dimensions.com (2026) | 1,520 mm | 610 mm of hanging space plus a 914 mm walkway |
Source: Houzz and dimensions.com, checked 27 October 2026.
dimensions.com says one-sided walk-ins are commonly 1,220 to 1,520 mm long. Go narrower than 1,390 mm, take off 600 mm for hanging, and less than 800 mm is left to walk in (our sums). At that size, a built-in robe along the wall makes more sense.
How wide is a two-sided (galley) walk-in robe?
About 1,700 to 2,130 mm, measured across the room. A galley has storage on both long walls and the walkway down the middle. Hanging needs more depth than shelves, so the mix sets the width.
| Room width | Layout | Source |
|---|---|---|
| 1,680-1,800 mm | 380 mm shelves along one side and an 820 mm walkway. At 1,800 mm that leaves 600 mm for hanging on the other side (our sums) | Houzz (Sally Hart) |
| 1,830-1,980 mm | Mixed storage on both sides and a 914 mm walkway | dimensions.com |
| 1,950 mm | Hanging and shelves on both sides | Houzz (Sally Hart) |
| 2,130 mm | Hanging on both sides, 610 mm each, and a 914 mm walkway | dimensions.com |
Source: Houzz and dimensions.com, checked 27 October 2026.
Sally Hart says 1,950 mm is "pretty much the cut-off point" for a standard walk-in. She adds that it feels wider with shelves set back to 380 mm deep, which is all folded clothes need.
How big should an L-shaped or U-shaped walk-in robe be?
At least 1,520 mm across for an L-shape and 2,130 mm for a U-shape, on dimensions.com's figures. A U-shape is a galley with a third run of storage across the back wall.
| Layout | Smallest width | Common length |
|---|---|---|
| L-shaped (storage on two walls) | 1,520 mm | 1,520-1,830 mm |
| U-shaped (storage on three walls) | 2,130 mm | 1,520-1,830 mm |
Source: dimensions.com, wrap-around walk-in closets (updated August 2026), checked 27 October 2026.
The corners are the catch. In a separate Houzz guide, Sally Hart says most Australian walk-in robes are U-shaped, and that people plan as if they can use each corner twice. Her tips:
- Let one run stop short of the corner. In one robe she shows, 380 mm deep shelves stop 600 mm short, which leaves a dead space of 380 x 600 mm.
- Put shelves, not hanging, on the back wall. Hanging space is deeper and eats into the length of the room.
- If the U is narrow, use the back wall for a mirror only, so the room works as a galley.
She is not a fan of corner shelves or rotating units, which she says end up messy or eat floor space.
How big does a walk-in robe with an island need to be?
At least 3,000 mm across, for a narrow island. Sally Hart's figures, by the short wall of the room:
| Short wall | What fits |
|---|---|
| 2,500-2,600 mm | An ottoman in the middle, with any mix of hanging and shelves on both sides |
| 2,600 mm | A dressing table along one wall, but not quite enough room for an island |
| 3,000 mm | A narrow island about 450 mm wide. Keep rugs and cabinet doors out of the walkway |
| 3,400 mm | An island 700 mm wide, with walkways of about 750 mm |
| 4,000 mm or more | A generous walkway, and room to swing cabinet doors around the island |
Source: Houzz, "Expert Eye: How to Squeeze in a Walk-In Wardrobe" (Sally Hart, May 2017), checked 27 October 2026.
A low seat needs less space around it than an island, she says. When the width is tight, she suggests dropping the island to about 750 mm high, so the walkway feels bigger.
How wide should the walkway in a walk-in robe be?
About 750 to 914 mm, depending on the source and the room.
- dimensions.com uses 914 mm (36 inches) of clear space in every layout.
- Sally Hart calls an 820 mm walkway "comfortable" in a narrow galley.
- Around an island in a 3,400 mm room, she allows about 750 mm on each side.
Measure the walkway from the front of the cupboards. Then think about doors. Her corner guide says to skip cabinet doors in a walk-in unless the room is very large, because the swing blocks the walkway and corner doors bang into each other. If you want some, put them on the back wall only. Houzz's Monique Sartor adds that mirrored doors make a walk-in look bigger.
Does a walk-in robe need a door, a window or a vent?
The building code does not ask for a window for light. The NCC's natural light rule covers habitable rooms only, and its definition of a habitable room leaves out walk-in wardrobes.
Air is less clear-cut. The NCC's ventilation rule covers habitable rooms, bathrooms and laundries, and also "any other room occupied by a person for any purpose". It lets a room borrow air through a door or opening from the next room. Ask your certifier whether your robe needs its own window or vent.
Houzz's Monique Sartor says a skylight or a window that opens is a good way to light and air a walk-in. If you cannot fit one, she suggests warm-white downlights and LED strips above the rails. Strong sun can fade clothes behind clear-fronted doors, so keep one cupboard with a solid front.
Many walk-ins have no door. If you want one, a cavity sliding door slides into the wall, so it needs no room to swing. Our guide to sliding door installation costs has the prices.
How do I measure a room for a walk-in robe?
Start with the short wall, as Sally Hart does. Then take away the storage and see what is left to walk in.
- Measure the short wall from wall to wall, at the floor and near the ceiling. Use the smaller number.
- Take off about 600 mm for each side with hanging, and 300 to 450 mm for each side with shelves only. Our guide to standard wardrobe depth has the full depths and the rail heights.
- Check that the walkway left over is at least 820 to 914 mm.
- Measure the long wall, and mark the door, windows, power points and switches. Each one shortens a run of storage.
- Measure the ceiling height (see the Queensland rules below).
An example: a room 1,900 mm wide, with hanging on one side (600 mm) and 380 mm shelves on the other, leaves 920 mm to walk in (our sums). At 1,600 mm wide the same layout leaves 620 mm, which is too tight, so you would go one-sided.
Is a walk-in robe better than a built-in?
Not always. Sally Hart says a one-sided walk-in uses twice as much floor space as a built-in for the same storage, because of the walkway. She says the loss can be made up when the back of the robe gives the bed a wall to sit against.
The upsides she lists for a narrow walk-in:
- nothing blocks the way in, because there are no wardrobe doors
- the space is easier to light
- you save the cost of the doors
- the opposite wall can hold a full-length mirror and belts, ties or scarves
If you cannot spare 1.4 m of floor, a built-in along one wall is the practical choice. A walk-in also costs more to fit out. Our guide to built-in wardrobe costs compares walk-in and built-in prices.
What are the Queensland rules for a walk-in robe?
There is no size rule, but these rules apply. This is a short summary, not legal advice.
- Ceiling height. Queensland still uses NCC 2022 (NCC 2025 starts here on 1 May 2027, says Business Queensland). Part 10.3 sets 2.4 m for habitable rooms. A walk-in wardrobe is not one, and the code's notes say non-habitable rooms can be 2.1 m. The height table does not name walk-in robes, so check with your certifier. See our guide to standard ceiling height.
- Approval. Under Schedule 1 of the Building Regulation 2021, alterations inside a house need no building approval unless they change the floor area or height, affect a structural part (other than minor ones) or affect the fire safety system. Moving a load-bearing wall is not covered. A building certifier has the final word.
- Licence and deposit. Building work over $3,300 needs a contractor with a QBCC licence. The deposit is capped at 10% for $3,301 to $19,999 and 5% over $20,000, or up to 20% when made-to-measure work done off site is more than half the price.
- Lights. The Electrical Safety Office says jobs like installing a light switch or power point, or a new light fitting, need a licensed electrician.
We build built-in wardrobes, cupboards and walk-in robe fit-outs across the Gold Coast, made to measure, and we book the electrician for any lights. See our carpentry work for what we do.
Where do these figures come from?
Checked on 27 October 2026: Houzz ("Expert Eye: How to Squeeze in a Walk-In Wardrobe" by Sally Hart, 17 May 2017; "Stop! No Right Turn! The Art of Cornering in Your Walk-In" by Sally Hart, 1 February 2015; "An Insider's Guide to Walk-In Wardrobe Measurements" by Monique Sartor, 17 July 2023); dimensions.com (single-sided, split single-sided, double-sided and wrap-around walk-in closet pages, updated 31 August 2026). Rules from the NCC 2022 Housing Provisions (Part 10.3 room heights, Part 10.5 light, Part 10.6 ventilation and the glossary definition of a habitable room, no date shown), Business Queensland (delayed adoption of NCC 2025, no date shown), the Building Regulation 2021 (Qld), the QBCC (when you need a licence, last reviewed 11 August 2021; deposits and progress payments, last reviewed 27 June 2025) and the Electrical Safety Office (no date shown). The sums are ours. We will check the figures again every three months.
See our carpentry work, or check what your job will cost.
