How long a bathroom renovation takes, and where the days go

Most New Zealand bathroom renovations take between two and six weeks on site (CheckMyBuilder, July 2026). Superior Renovations splits that by scope: a budget refresh 2–5 days, a mid-range full renovation 2–3 weeks, and a luxury or structural job 5–6 weeks, with Auckland running longer on all three. Consent, where it is needed, sits on top of the build.

By scope

Superior attributes Auckland's longer timeline to tradie availability (it says high demand means 1–2 week delays before work starts), Auckland Council consent processing of 1–3 weeks, and humidity slowing drying times for paint and grout.

Where the days actually go

The surprise for most people is how little of the programme is someone doing something. A mid-range bathroom is a queue of short visits by different trades, separated by waiting.

1. Strip out, 1–2 days. Fixtures, linings and the old membrane come out. This is also when what is behind the tiles becomes a known quantity rather than a guess.
2. Repairs, 0–3 days. Framing, substrate or subfloor damage found at strip-out. It is nobody's favourite line, which is why Superior recommends a 15–20% contingency.
3. Plumbing and electrical rough-in, 1–2 days. A licensed plumber and a registered electrician, usually not on the same day.
4. Substrate and membrane, 2–4 days. Mostly curing between coats, which cannot be rushed and is the part that fails when it is.
5. Tiling, 2–5 days. Then grout, then silicone, with drying between each.
6. Fit-off, 1–2 days. Vanity, toilet, tapware, screen, lighting, fan, and the plumber and electrician back for their second visits.
7. Walkthrough and hand over, half a day. Including the records pack.

Living without a shower

If it is the only bathroom in the house, that is the number that matters, not the total. Realistically it is from strip-out to the day the shower is sealed and cured, which on a mid-range job is most of the programme. Plan for it: a second bathroom elsewhere, a gym membership, or a fortnight at a relative's. We put the no-shower window in the written scope rather than leaving you to work it out.

Consent time, where it applies

Most bathroom renovations do not need consent at all, because they are exempt under Schedule 1 clause 12 and clause 35 of the Building Act. Where consent is needed, Superior puts Auckland Council processing at 1–3 weeks and says a mid-range consented job adds 2–3 weeks overall and a structural one 3–4 weeks. Your own council's processing times are the ones that apply. See do you need consent.

What actually makes it late

• Deciding on tiles halfway through. Order everything before strip-out day.
• What is behind the wall. A rotten sill or a leaking waste is a variation and a delay. A moisture check before the job starts turns some of these into knowns.
• A trade queue. Superior notes 1–2 week Auckland delays before work starts. One contract with one programme is worth more than three cheap quotes with three diaries.
• Drying time. It is not padding. Membranes and grout cure at the speed they cure.