Bathroom Renovation Ideas: Where the Budget Actually Matters
Bathroom renovation lists are full of ideas and short on priorities. Here is where the money actually matters — from the wet wall to the extractor fan — and where it is safe to save.
Most bathroom renovation lists read like a mood board — a scattershot of tile, fixtures and paint colours with no sense of priority. The more useful question isn’t “what ideas exist,” it’s “where does the budget actually matter.” A renovation with the plumbing, ventilation and shower right, finished in cheap tile, will outlast and out-perform one with expensive tile and a rushed layout every time.
Keep the wet wall if you possibly can
Moving where the toilet, shower and sink connect to the drain stack is the single biggest line item in most bathroom renovations, and it’s usually invisible in the finished result — you’re paying to move pipes inside a wall, not for anything you can see or touch. Unless the existing layout genuinely doesn’t work, keeping fixtures on their existing wet wall and spending the saved budget on finishes is almost always the better trade.
Spend on the shower, not the bath
A tub gets used less than people plan for when they’re renovating, and it’s the more expensive fixture to install well — waterproofing under and around a built-in bath is more labour than a shower base. Unless the household has small children or a specific reason to keep a tub, a well-built walk-in shower with a quality glass enclosure is where the money is better spent. If you do need both, a smaller tub tucked into a corner rather than a full centrepiece soaking tub keeps the footprint (and cost) down without losing the option entirely.
Tile is a labour cost before it’s a material cost
Small mosaic and intricate pattern tile can look striking, but the installation time — and therefore the bill — scales with how many individual pieces a tiler has to set and grout, not with how much the tile itself costs per square metre. Large-format tile with a straightforward layout is both cheaper to install and, done well, reads as more considered than a busy pattern. Save intricate tilework for a single accent area — a shower niche, a floor inset — rather than the whole room.
Extraction matters more than it gets credit for
An undersized or poorly-ducted extractor fan is the most common reason a newly renovated bathroom starts showing mould within a year — new tile and grout don’t fix a moisture problem, they just hide it temporarily. Size the extractor to the room’s actual volume, duct it to the outside rather than into a loft space, and put it on a humidity sensor or timer rather than relying on the light switch. It’s the least visually interesting decision in the whole renovation and one of the most consequential.
The vanity is the easiest place to economise
A semi-custom or fully custom vanity costs meaningfully more than a well-chosen stock unit, and in a small-to-medium bathroom the difference is hard to see once it’s installed and styled. If the budget is tight, this is a better place to save than tile, plumbing or ventilation — put the money saved here toward a better shower enclosure or genuinely good taps instead.
One splurge that’s actually worth it: underfloor heating
Electric underfloor heating under tile is relatively inexpensive to install during a full renovation — the floor’s already coming up — and meaningfully changes how the room feels day to day in a way that’s hard to retrofit later without repeating the whole floor tear-out. Of everything on this list, it’s the one upgrade people who’ve done it consistently say they’d pay for again.
For a look at how these decisions play out across different styles, browse bathroom designs spanning farmhouse, mid-century modern, traditional, industrial and spa-style luxury bathrooms, or read our guide to making a small bathroom feel bigger if space, not budget, is the main constraint.