Making the Most of Corner Space in Your Bathroom

Why Corner Space Is the Most Underused Area in Your Bathroom

Let's face it. Corner space is usually the last place you look at when considering your bathroom, and the first place that gets full of half-empty shampoos or that box of bath toys that can never be thrown away (my biggest frustration). But take the corner of the average bathroom and look at the floor triangle that would be made up — if you use the corner space properly, this will give you wall runs for towel rails or doors or deep storage that make a significant difference to the functionality of your bathroom for daily living.

The problem is habit. Most people, especially most volume specification builders, line their fixtures to straight walls — vanity on one wall, bath on another wall, shower in the corner as an afterthought. This is an obvious and safe thing to do, and certainly very practical, but it doesn't take into account how much of a difference corner placement can make to traffic flow, especially in a bathroom of less than 6 square metres where clearances are vital.

Your first priority is to determine what can best be done with that corner space, but before you buy a single fixture or fitting it is vital to take exact measurements — as the dimensions of corners are not always as you would hope.

Size Up Your Corner Before a Single Cent Changes Hands

Don't buy a thing yet. Tape measure first, everything else second — plenty of bathroom renos have died early because someone skipped this step.

You'll need the diagonal wall-to-wall measurement across your corner (i.e. distance from wall to adjacent wall at a 45-degree angle), the rough-in positions of the plumbing (i.e. centre-point of your waste outlet to nearest wall) and confirmed stud locations — especially if you're considering a wall-hung fixture. For the latter, a standard stud finder will suffice.

An additional complication with older homes is that your corner angle isn't always a straight right angle. Many new builds are constructed at 90 degrees but older homes don't always follow suit. A corner that looks square to the eye may actually be 88 or 92 degrees — enough to give a visible gap or for doors not to shut on a corner unit. Verify the angle with a large carpenter's square, and if it does differ then you'll need to allow for this in your choice of fixture or have a tradie assess whether shimming or scribing is required.

You'll also need to allow clearances at all times. Under the Livable Housing Design Standard, there needs to be a clear circulation space of 1,200 mm by 900 mm from the front edge of the toilet pan. Any corner fixtures that encroach on this area are non-compliant, so check your floor plan against these figures before committing to anything.

Now that you've taken your measurements, one of the simplest corner additions is storage — and there are three main options that suit different budgets, bathroom types, and levels of renovation.

Corner Storage: What Are Your Actual Options?

Surface-mounted floating corner shelves? Dead easy — nothing really touches them for simplicity. Renters get a bonus: they're DIY-legal and removable, so out they come at the end of the lease with the bond intact. The catch is load capacity. Timber and acrylic corner shelves are light-duty at best — toiletries and a few products, sure, but forget stacking heavy towels on them.

Corner cabinets sit in the middle ground. A Fienza shaving cabinet is a good example: mirrored, far more storage than any open shelf. Worth flagging though — hardwired LED cabinets mean a licensed sparky, full stop. Cross it off the weekend DIY list.

Recessed tile niches sit at the premium end and get folded into a full bathroom reno — drag a full stack of compliance obligations along with them, too. The membrane goes to a licensed waterproofer — no shortcuts there. Floor tiles have to meet a minimum wet-area slip resistance of P3, and that's before you even get to the waterproofing, tiling, and grouting obligations. Yeah, it's more work — the payoff is a niche that looks like the room was built around it.

Vanity in corner Placement: Sizes, Materials, and Costs

Placing a vanity in corner can be a great idea as it frees up the remaining wall space for towel rails, storage, and doors. Standard Australian corner vanities measure between 600 mm and 900 mm across the diagonal face, with a depth of 450 mm and a benchtop height of 860 mm.

With the corner space exposed from two walls, the cabinet material matters. PVC-board is the most moisture-resistant and is well suited to this position. Moisture-resistant MDF is also suitable for most bathrooms. Solid timber cabinetry is available but requires ongoing maintenance in a corner bathroom environment. Note that tapware and basin waste are rarely included in cabinet pricing.

Plumbing is also a key consideration. A basin bowl positioned at the centre of the diagonal face may not align with your existing waste pipe. A licensed plumber should be consulted, as relocation work needs to be factored into your project budget.

Choosing a tub corner Setup: Types, Dimensions, and Practical Fit

Most tub corner configurations are either built-in drop-in style — where the bath sits within a tiled raised platform — or freestanding. Broadway is the dominant brand for corner bathtubs, offering sizes at 1,500 mm and 1,700 mm across the diagonal face, generally in fibreglass-backed acrylic. 

Corner spa baths are a separate category. They require plumbing connections to the waste, overflow, and water supply, as well as an electrical connection for the spa jet pumps — both requiring a licensed plumber and licensed electrician respectively.

Weight is an important consideration with any tub corner installation. A 1,700 mm acrylic corner bath can exceed 400 kg when filled with water and an occupant, so a structural assessment may be required to confirm your subfloor can carry the load — particularly with older timber floors. Waterproofing is also mandatory and must be carried out by a licensed waterproofer. Adjacent walls to a drop-in tub must be water resistant to at least 150 mm above the vessel; failing to meet this requirement can result in significant structural damage.