What a new shower really costs in NZ (and how to avoid costly mistakes)
Autumn is the smart window to upgrade a shower in Wellington. You beat the winter damp, you catch problems before cold weather sets moisture into walls, and you avoid renovation bottlenecks. But budgets can blur fast when quotes hide key steps like substrate repairs or certified waterproofing.
This guide explains real New Zealand cost drivers, realistic timelines and what is included in a proper, code-compliant install. You will see how acrylic and tiled options compare, where consent can apply for Wellington City Council, and the top mistakes we are called to fix after DIY or rushed jobs. If you are planning a like-for-like swap or a full reconfiguration, this is your buyer’s checklist.
Wellington Showers provides itemised quotes that include labour, materials, certified waterproofing, plumbing and electrical fit-off where required, waste removal and GST, backed by a 10-year workmanship guarantee. Book a site measure now to lock in an autumn install before winter.
What a new shower really costs in NZ
Every bathroom is different, so treat ranges as informed estimates, not fixed prices. Costs vary by shower type, size, brand, plumbing changes, condition of walls and floors, and glass configuration.
Like-for-like acrylic upgrade, same position: typically from the mid $3,000s to mid $4,000s installed. This often covers removal of the old unit, new tray and liner, standard glass, certified membrane where required, plumbing fit-off, sealing and waste removal.
Acrylic with minor reconfiguration or premium glass: commonly $4,500 to $6,500 installed, depending on tray size, liner quality, door hardware and small plumbing or wall remediation.
Tiled shower with pre-formed tray and glass: expect a broader band, often $6,500 to $10,000+ installed. Tile choice, waterproofing system, custom glass, niche details and substrate repair all influence the total.
Full wet-room or complex reconfiguration: can exceed $10,000+. These projects may involve consent, structural work, under-tile heating, custom drains, larger-format glass and extended sequencing with other trades.
A proper quote should break out the tray or base, liner or tile scope, glass doors, plumbing and electrical allowances, substrate repair contingencies, certified waterproofing membrane, sealing, waste removal and GST. That transparency is how you compare like for like.
Acrylic liners vs tiled showers
Acrylic delivers speed, predictable costs and straightforward cleaning. Modern liners and trays can look sharp, and a like-for-like swap can be completed in a single day when walls are true and the substrate is sound.
Tiled showers offer design freedom and a premium feel. They allow niches, formats and frameless glass options. They also carry more steps: substrate prep, certified waterproofing membrane, curing time, tiling and grout sealing. Expect multi-day or staged work. If you choose tile, budget for a professional membrane system installed by a certified applicator to meet NZ Building Code wet-area requirements.
If you are unsure which way to go, a site measure will help you weigh timing, cost and maintenance. For local context and help with planning, explore our shower installation guidance for Wellington homeowners in our service overview on the Wellington Showers website.
Timeline, from single-day swaps to tiled installs
Like-for-like acrylic replacement: often a single day on site, assuming walls are plumb, the tray area is level, and plumbing heights align. We remove the old unit, repair minor substrate issues, install tray, liner and glass, complete plumbing fit-off, seal, test and clean down.
Tiled or reconfigured installs: typically multi-day. Time is needed for substrate remediation, certified waterproofing membrane application and cure, tiling and grout cure, and final glass fit-off. We provide a clear sequence and schedule so you can coordinate other trades.
Do you need a licensed plumber or electrician?
Yes, a Licensed Plumber is typically required for shower installations to adjust pipework, install mixers, connect wastes and test for leaks. An electrician may be needed for extractor fans, demisters or heated towel rails on the same project. We coordinate trades as part of our end-to-end service so the work is compliant and tidy.
Consent and compliance in Wellington
Like-for-like replacements usually do not need building consent. Tiled showers, new wet-room conversions, new waterproof membranes or moving major plumbing fixtures can trigger Wellington City Council consent. We can advise on what is required for your design and manage consent where necessary. All waterproofing is completed using a certified membrane system that aligns with the NZ Building Code for wet areas, and documentation is provided for your records.
What is included in an itemised quote
A complete, no-surprises quote should show:
Removal and disposal of the old shower and related waste
Tray or base supply and fitting, plus liner or tile scope
Certified waterproofing membrane and documentation
Glass door or enclosure supply and installation
Plumbing and electrical allowances as needed
Substrate and framing repairs if rot or misalignment is found
Sealing, silicone, trims, upstands and finishing
Final testing, clean and handover guidance
This is the level of detail we include so you can compare options properly and avoid scope gaps.
The top 7 shower mistakes we fix after DIY or poor installs
Out-of-plumb walls. Glass will not seal or hinge correctly against a crooked wall. We true up linings or use corrective methods to restore fit and waterproofing.
Unlevel trays and bases. Water pools or runs the wrong way, leading to leaks and smells. We relevel, refit wastes and correct falls.
Wrong sealant selection. Bathroom-grade silicone and compatible primers matter. The wrong product peels, harbours mould or lifts from acrylic and tile edges.
Missing or undersized upstands. Without proper upstands, water gets behind liners or tile edges, causing swelling trims and soft skirting.
Mis-measured doors. Frameless doors and side panels must be measured to the millimetre. We re-measure, rehang or remake to stop leaks and rubbing.
Poor waterproofing practice. Membranes not applied to spec, no flood testing, or pinholes around penetrations are common failure points. We remediate and certify.
Incomplete drainage connections. Loose or under-sealed wastes cause hidden leaks. We pressure test and verify connections before sign-off.
If you are seeing swollen trims, mouldy silicone or cloudy glass, book an assessment before winter. We prioritise repair-first solutions where possible and can often restore clarity to existing glass or fix targeted leaks without full replacement.
How to avoid costly rework on your shower
Get a measured site assessment. Confirm wall plumb, base level, and plumbing heights before you order glass.
Choose certified waterproofing. A proven membrane system with documentation is your long-term insurance.
Sequence trades correctly. Membrane must cure; glass is measured at the right stage; final silicone needs dry, clean substrates.
Keep materials compatible. Adhesives, primers and sealants must suit acrylic, tile, glass and trims.
Ask for proof of testing. Drainage and pressure tests, visual inspection of upstands and photographic membrane records protect your investment.
For end-to-end help from a specialist team, see our local service overview for shower installation in Wellington and surrounding suburbs. If you are planning custom glass or measuring up new doors, you can also view our made-to-measure and retrofit options on our shower installations page.
Quick FAQ
How much does it cost to install a shower in NZ?
Acrylic like-for-like upgrades often start in the mid $3,000s to mid $4,000s installed. Tiled solutions commonly fall between $6,500 and $10,000+, depending on materials, membrane, glass and substrate repair. These are estimates, not fixed prices. An itemised site-based quote is the best guide.
Do I need a plumber to install a shower?
Yes. A Licensed Plumber typically connects the mixer, waste and pipework. An electrician may be needed for fans or demisters. We coordinate both so the work is compliant.
What are common shower installation mistakes?
The big ones are out-of-plumb walls, unlevel trays, the wrong sealant, missing upstands, mis-measured glass, poor waterproofing and incomplete drainage connections.
How long does a shower installation take?
A like-for-like acrylic swap can often be completed in a single day. Tiled or reconfigured installs are multi-day due to substrate prep, certified waterproofing membrane cure and tiling.
Ready to plan your autumn install?
If you want an itemised, no-surprises quote that includes certified waterproofing, substrate repair allowances and waste removal, we can help. Book a site measure to secure an autumn slot and step into winter with a code-compliant shower backed by our 10-year workmanship guarantee.
Helpful resources on our site:
Learn more about our shower installation service in Wellington at the Wellington Showers homepage.
If you are considering protective coatings for new or restored glass, explore ClearShield treatment in our dedicated page.