Bathroom Renovation 101: Must-Know Measurements for a Perfect Kiwi Makeover

Planning a bathroom reno in Aotearoa? Whether you're upgrading a compact en suite or giving your family bathroom a full refresh, getting your measurements right is key to a smooth, stylish, and functional renovation. From council compliance to comfort, knowing standard dimensions ensures your space works well and looks great. Here's your essential guide to bathroom measurements, Kiwi-style.

1. Toilet Space Guidelines (The Loo)

The toilet is a central fixture, so getting the spacing right is important. You’ll need at least 760mm of width—that’s 380mm from the toilet centreline to each side wall or fixture. For legroom, aim for at least 510mm of clear space in front, although 600mm or more is better for comfort. Don't forget to check NZ Building Code standards if you're relocating plumbing.

2. Shower Sizing

A standard tiled shower in NZ starts at 900mm x 900mm, suitable for one person. If you’ve got the room, go for 1200mm x 900mm for extra comfort. Frameless glass is a popular choice with Kiwis for a clean, modern look. Make sure your shower door or screen can swing or slide without hitting vanities or walls—leave at least 550mm of clearance.

3. Bathtub Dimensions

Freestanding tubs are on-trend in NZ, but make sure they fit your space. The common built-in bathtub is around 1500mm long, 750mm wide, and about 400mm deep. If you're installing a freestanding option, leave at least 100mm of clearance on each side for easy cleaning and visual balance. Always consider your hot water cylinder capacity too—especially if you're in an older villa.

4. Vanity & Basin Areas

Vanity units range from 450mm wide for a single, compact style to 1800mm for double basins. Each basin needs at least 750mm width to feel comfortable. Make sure you allow at least 500mm of space in front for moving around easily. Wall-hung vanities are ideal for smaller NZ bathrooms, offering a sleek look and better floor visibility.

5. Ceiling Height & Mirror Placement

The minimum ceiling height for bathrooms under NZ Building Code is 2.1m. For mirrors, placement usually starts between 1200mm and 2000mm from the floor, depending on user height. A mirror that matches or is slightly smaller than your vanity width creates a balanced look.

6. Storage & Practical Clearances

Tall cupboards and shelves should be no deeper than 300mm to avoid crowding. Towel rails need around 600–800mm of horizontal space. Be sure to plan for door swings—especially for narrow bathrooms or where you've got both a bathroom and wardrobe door nearby.

Final Word for Kiwi Homeowners

Before your builder arrives or your tradie starts tiling, sketch out your space using NZ measurements. Online planning tools or help from a local interior designer can be a game-changer. And remember—give yourself a little extra wiggle room. Renovations always come with a few surprises!

By sticking to these standard Kiwi measurements, you’ll create a bathroom that’s not just beautiful but practical, comfortable, and ready for daily life in Aotearoa.