Bathroom renovation cost in NZ (2026)

Updated 11 November 2026. Prices are published NZ figures, linked to their source. Your tradie quotes after seeing the job.

A mid-range full bathroom renovation in NZ typically costs about $18,000 to $35,000, depending on the source and the city (Superior Renovations, 2026; CheckMyBuilder, 2026). Auckland sits at the top of that range. A budget refresh with no layout change starts around $8,000, and premium bathrooms with layout changes run to $65,000 and beyond.

The published figures are mostly from renovation companies and cost-guide sites, and they do not always agree. Treat every number here as a guide, then get a written, itemised quote for your own bathroom.

The quick answer

CheckMyBuilder is a vendor cost guide and says its figures are 2026 estimates for guidance only. Superior Renovations and Refresh Renovations are Auckland renovation companies, so their pages also sell their services.

The sources disagree on where “entry level” starts. CheckMyBuilder’s budget tier begins at $8,000, while Refresh Renovations says entry level starts from around $35,000 for a scope that includes minimal plumbing and rewiring and no full waterproofing membrane. The difference is mostly in what each one counts as a renovation. Ask any tradie to list exactly what is in the price.

What changes the price

Region. CheckMyBuilder gives indicative typical figures of $28,000 for Auckland, $24,000 for Wellington, $22,000 for Christchurch and $20,000 for regional NZ. Superior Renovations says Auckland sits 20% to 30% above the national average and quotes Auckland labour at $120 to $150 an hour against $70 to $100 nationally.

Labour. Superior Renovations says labour across all trades is 40% to 50% of a project. Its mid-range line items are labour at $8,000 to $12,000, materials at $4,000 to $8,000 and fixtures (shower, toilet, vanity) at $3,000 to $6,000.

The licensed trades. On the same line-item table, mid-range plumbing is $2,000 to $3,000, electrical is $1,000 to $2,000 and waterproofing is $500 to $1,000. Waterproofing a shower area alone is quoted at $400 to $600, and a full 10 square metre bathroom at $800 to $1,500.

Moving things. CheckMyBuilder adds $2,000 to $6,000 for moving the toilet or shower, $2,000 to $10,000 for the extent of tiling, and $1,500 to $5,000 for a custom vanity or joinery. Refresh Renovations calls keeping the existing layout the biggest cost saver.

Structural changes. Superior Renovations lists $0 to $1,000 in mid-range and $2,000 to $5,000 or more in luxury bathrooms.

Time. CheckMyBuilder says most bathrooms take 2 to 6 weeks. Superior Renovations says 3 to 4 weeks in Auckland for mid-range, plus a 1 to 2 week wait for tradies.

Consent fees. CheckMyBuilder lists consent fees as usually extra, with no amount. Superior Renovations gives $500 to $2,500 for Auckland work and says minor plumbing under $5,000 with a producer statement has a fixed fee of $354.

Superior Renovations notes that its own mid-range line items add up to $20,000 to $35,500, which is below the $25,000 headline at the low end. That is a reminder that line items and totals from the same page can differ, so ask for your own breakdown.

A worked example

Using the figures above, take a mid-range Auckland bathroom with the layout kept.

• Licensed and specialist trades from Superior Renovations’ mid-range line items: plumbing $2,000 to $3,000, plus electrical $1,000 to $2,000, plus waterproofing $500 to $1,000 = $3,500 to $6,000.
• Whole project from the same table: $20,000 to $35,500.
• Contingency at the 15% low end of Superior Renovations’ advice: 15% of $20,000 is $3,000, and 15% of $35,500 is $5,325.
• Total to keep in mind: $23,000 to $40,825.

If you also move the toilet, CheckMyBuilder’s $2,000 to $6,000 comes on top. So the same bathroom can sit anywhere from about $23,000 to nearly $47,000 before you have chosen a single tile.

Rules, licences and consents

Plumbing. The Ministry of Business, Innovation and Employment (MBIE) says that an authorised plumber may alter existing sanitary plumbing without a building consent, as long as the changes do not increase the number of sanitary fixtures in the building and do not affect a specified system (MBIE exemption 35). Its examples of exempt work include repositioning or replacing a bath, bidet, basin, shower or toilet pan within an existing bathroom, and replacing a bath and shower with a new shower enclosure and a new bath in the same space.

When you do need a consent. The same page says an ensuite that adds a shower, basin and toilet needs a consent, because those fixtures are additional to the ones already in the building. It also says that if plumbing work could affect structural parts such as floor joists or wall framing, a consent may be needed, and to get professional advice first.

Like-for-like replacement. MBIE’s other plumbing exemption covers repairing and replacing sanitary plumbing with comparable components in the same position, again by an authorised plumber. Its example is swapping a vanity for a comparable one (MBIE exemption 32).

Linings and tiling. MBIE says no building consent is needed to replace or alter internal linings and finishes in an existing dwelling, but wall and ceiling linings often provide bracing and fire resistance, so get advice from a qualified building practitioner first. It also says to ask a suitably qualified person if you are unsure about internal moisture requirements (MBIE exemption 12). Refresh Renovations (a vendor) says a tiled wet-area shower can need a building consent because of waterproofing requirements, so confirm with your council before you tile.

Restricted building work. MBIE’s page on restricted building work (updated 15 January 2026) says it covers consented work that involves a home’s primary structure or weathertightness, and that a Licensed Building Practitioner must do it. The waterproofing it lists is external (coatings to solid walls and roofs, deck and balcony membranes). It also says fitting new sanitary fixtures where there were none before is not restricted building work. If your bathroom job involves structural changes or consented work, ask your council whether an LBP is required.

Electrical. The Electrical Workers Registration Board says electrical work in your home should be done by someone registered and licensed to do it, and that you should ask to see their licence ID and check the public register. See our guide to checking an electrician.

Plumbers. The Plumbers, Gasfitters and Drainlayers Board (PGDB) says to ask to see the tradesperson’s licence, check the expiry date and confirm the licence class covers the work (PGDB advice for consumers). See our guide to checking a plumber.

Contracts and your rights. Building.govt.nz says you must have a written contract for residential building work costing $30,000 or more including GST. For work of that size your contractor must also give you a disclosure statement and a consumer protection checklist before you sign. After the work you get a 12-month defect repair period, and implied warranties apply for 10 years (building.govt.nz, protection for homeowners).

Questions to ask before you say yes

• Is this a fixed price or an estimate, and does it include GST?
• What exactly is in the price: demolition, rubbish removal, tiles, fixtures, plumbing, electrical and waterproofing?
• Is anything on the list a provisional sum, and how will extras be priced?
• Does the job add a fixture or move anything, and who checks whether a consent is needed?
• Who is the licensed plumber and electrician, and can I see their licence numbers?
• How is the waterproofing done, and will I get a record of it?
• What contingency should I hold back for surprises in the walls and floor?
• What warranty do you give on the work, and what paperwork do I get at the end?

How GoodTradie helps

GoodTradie is free for homeowners. A whole bathroom renovation is bigger than any one trade, and we do not manage whole renovations or find builders. What we can do is find you one checked plumber, whose licence we confirm on the PGDB register, or one checked electrician on the EWRB register, for the licensed parts of the job. We then check their quote against published NZ figures like the ones above. We do not send your job to several tradies. That check is a guide, not a guarantee of the best price. Type the plumbing or electrical job into the box at the top of the page to get started.

Sources

• CheckMyBuilder, bathroom renovation cost, updated July 2026
• Superior Renovations, bathroom renovation cost Auckland 2026, published 3 August 2026, updated 24 October 2026
• Refresh Renovations, Auckland bathroom renovation cost guide 2026 (page date not stated)
• MBIE, 4.7 Alteration to existing sanitary plumbing (page undated)
• MBIE, 4.1 Repair, maintenance and replacement of sanitary plumbing and drainage (page undated)
• MBIE, 3.4 Internal linings and finishes in existing dwelling (page undated)
• MBIE, restricted building work, updated 15 January 2026
• Building.govt.nz, protection for homeowners (page undated)
• Electrical Workers Registration Board, why use a registered electrical worker (page undated)
• Plumbers, Gasfitters and Drainlayers Board, advice for consumers (page copyright 2025)

Need a plumber? See how we find and check one, or type the job in the box at the top.