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bathroom reno taking way longer than quoted is that normal

The question, put plainly: How long should a renovation actually take?

The short answer

Trade sequencing, not labour, sets the timeline. A bathroom involves six or seven trades in a fixed order with curing time between some of them, which is why a two-week job takes four when one trade slips.

TradieAnswers editorial · written in-house and sourced to the authorities listed below

Checked against 5 published sources, listed in full at the end of this page. How we source this

People estimate renovation time by adding up the work. Builders estimate it by sequencing trades, and the two produce very different numbers, because most of the elapsed time on a small job is waiting rather than working.

A bathroom, in order

  1. Strip out and remove waste.
  2. Rough-in plumbing and electrical, which usually need two separate visits.
  3. Any structural or framing work, and wall sheeting.
  4. Screed and waterproofing, with curing time before anything else can happen.
  5. Tiling, then grouting, with curing again.
  6. Fit-off plumbing and electrical, which is the second visit for both trades.
  7. Glass and shower screen, which is usually measured only after tiling and then made to order.
  8. Painting and final making good.

Why it slips

  • One trade running late pushes every trade behind it, and they are booked on other jobs.
  • Made-to-measure items, particularly shower screens and stone, cannot be ordered until the space is measured.
  • Something found on strip-out: rot, asbestos, old plumbing, a floor that is not level.
  • Variations, which take decision time as well as work time.
  • Curing times that cannot be compressed regardless of how much anyone wants to.

What to put in the contract

A start date, an expected duration, and a mechanism for extending it that requires notice in writing. Domestic building contracts in most states must state the completion period, and a variation that affects time should say by how much. That does not make delays go away, but it converts them from a grievance into a documented record.

Sources

Every source below was fetched and its response recorded on the date shown. Where a government site blocks automated clients, that is noted rather than reported as a successful check.

  1. Building contracts · Consumer Affairs VictoriaChecked 2026-08-10 · responded 200 OK
  2. Building Commission NSW · NSW GovernmentChecked 2026-08-10 · responded 200 OK
  3. QBCC · Queensland Building and Construction CommissionChecked 2026-08-10 · responded 200 OK
  4. Guidance material and handbooks · Australian Building Codes BoardChecked 2026-08-11 · responded 200 OK
  5. Contracts · Australian Competition and Consumer CommissionChecked 2026-08-10 · responded 200 OK

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