Why do bathroom renovation clients pick the cheaper quote?

Bathroom renovation clients often pick the cheaper quote because the two quotes are not pricing the same job. One Canberra renovator found a rival quote was $10,000 lower because it left out $10,000 of plumbing. Before you cut your price, test six causes: allowances, exclusions, the waterproofing line, contingency, itemisation depth and the follow-up gap.

Rules of thumb

• The comparison set: the NSW Government tells homeowners to give at least 3 contractors the same job brief (NSW Government, getting quotes), so losing 2 of every 3 competitive bathroom quotes is a fair share, not a pricing failure (arithmetic).
• The vague brief: the same NSW page warns that if the homeowner does not specify exactly what they want, “the quote may only include the cheapest products and materials”. A vague brief manufactures a cheaper quote.
• The margin test: one Canberra bathroom renovator says most builders earn about 6% of the job (Region Canberra partner content, October 2025). On a $32,000 bathroom that is $1,920, so a rival $9,400 lower cannot be explained by a thinner margin (arithmetic).
• The waterproofing line: the What’s The Damage cost guide says waterproofing should appear as its own line at $755–$3,775, with a statement that it complies with AS 3740 (WTD worked quote examples; indicative guide figures, not collected quotes).
• The residual rule: in the worked example below, a 29% headline gap shrinks to 1.6% once scope is matched. Under 5% residual is a presentation problem; over 15% is a real price gap (labelled assumption thresholds).

Why do customers choose the cheaper bathroom renovation quote?

Customers choose the cheaper bathroom renovation quote mostly because it looks like the same job for less money, and six specific quote gaps create that illusion. No public study ranks these causes by frequency, so the table orders them by the price gap each created in the worked example below.

Frequently asked questions

Why is one bathroom renovation quote so much cheaper than the others?

Often because it prices a smaller job. Check whether plumbing rough-in is excluded, whether the tile, vanity, tapware and screen allowances are lower, whether waterproofing is its own line, and whether there is a contingency. In the worked example on this page those four gaps explain $8,900 of a $9,400 difference.

Should I lower my bathroom quote to match a cheaper one?

Not until you have matched the scope line by line. If the gap left after matching is under 5% of your price, change how you present and follow up the quote. Only a residual above about 15% on a licensed, insured rival points to a real pricing problem (assumption thresholds).

What must a bathroom renovation contract include in NSW?

A written contract is needed when the price is over $5,000 including GST, and jobs over $20,000 need a large job contract with the price on the first page, a five clear business day cooling-off period and a Home Building Compensation certificate, according to the NSW Government contracts page. Other states have their own rules.

Does waterproofing need to be a separate line on a bathroom quote?

It should be. A separate line with the AS 3740 standard and your licence number lets the homeowner see whether the rival quote priced it at all. The What’s The Damage Wollongong guide says waterproofing should appear as its own line at $755–$3,775.

How many quotes do homeowners get for a bathroom renovation?

The NSW Government advises giving at least 3 contractors the same information so the quotes can be compared. That makes 1 win in 3 a fair share on competitive bathroom work, before any price difference is considered.

How much of the price gap is real? A worked quote comparison

A worked line-item comparison shows that a $9,400 gap between two bathroom quotes can shrink to $500 once both quotes price the same scope. Every figure below is a labelled assumption for a mid-range, same-layout bathroom; swap in your own numbers and send the worksheet to the client.

1. Headline gap: $32,000 minus $22,600 is $9,400, or 29% of your price.
2. Scope gaps: $3,000 plumbing plus $1,500 waterproofing plus $2,800 allowances plus $1,600 contingency is $8,900.
3. Matched rival quote: $22,600 plus $8,900 is $31,500, so the real saving is $500, or 1.6% of your price.
4. Margin check: 6% of $32,000 is $1,920. The headline gap is almost 5 times that whole margin, which is why it had to come from scope, not efficiency.

Published examples follow the same pattern: the Canberra renovator’s $10,000 gap was plumbing the other quote left out (Region Canberra, July 2024), and the What’s The Damage guide shows two “vanity included” quotes allowing $540 and $3,775.

How do you find out which cause lost you the bathroom job?

The fastest way to find which cause lost a bathroom job is to rerun the worksheet on your last five lost quotes and log one cause per job. Ask each homeowner one question within a week of the loss: “Would you be willing to send me the other quote, or tell me what it included for plumbing, waterproofing and the vanity?” Some will not share the document; the three-item question is easier to answer and gives you the same three lines.

• Residual under 5% of your price: you lost on presentation or follow-up. Change the quote format and the cadence, not the rate.
• Residual 5% to 15%: check labour and overheads against your own job costing before moving price. Tiling labour was the only real saving in the worked example.
• Residual over 15%: the rival is genuinely cheaper on matched scope, or is not licensed or insured for the job. Check before you compete with it.

These thresholds are labelled assumptions, not a published benchmark: no public Australian source measures how often matched bathroom quotes still differ by more than 5%. Five logged losses at about 20 minutes each is under two hours (assumed time). For trade win-rate benchmarks, see what a good quote conversion rate is for tradies.

What should a bathroom quote show so the cheaper one stops looking cheaper?

A bathroom quote that wins on matched scope shows every allowance in dollars, a separate waterproofing line, a named contingency, and the legal basics the homeowner can check on the rival quote. In NSW, the legal basics are published by the state government:

• Licence: waterproofing is trade work, and a contractor licence is required for residential building or trade work, including waterproofing, valued at more than $5,000 in labour and materials including GST (NSW Government, waterproofing work). Print your licence number and invite the homeowner to check every quote’s licence.
• Contract: jobs between $5,000 and $20,000 need a small jobs contract; jobs over $20,000 need a large job contract with the price on the first page and a five clear business day cooling-off period (NSW Government, contracts for residential building work).
• Insurance and deposit: the same page says a contractor must give a Home Building Compensation certificate where the contract is valued over $20,000, and the maximum deposit is 10%.
• Prime cost items: the NSW page says the builder “should allow a price that covers their expected cost”. Quote the allowance beside each item so the homeowner can see whose allowance is realistic.

Other states set their own rules, so check your state regulator, then send the worksheet above with your quote filled in.

When did the cheaper quote win on follow-up rather than price?

The cheaper quote often wins on follow-up when the homeowner was still months from deciding and the cheaper contractor was simply the last one to call. Houzz’s 2022 Australian report found homeowners spent an average of 9.7 months planning a primary bathroom against 3.9 months of construction (Houzz & Home Australia 2022), so a bathroom decision can take many months.

If your last contact predates their decision by more than a month, log the loss as a follow-up gap, whatever the homeowner says. The cadence for live quotes is covered on what to do when a quote gets no reply, and the older pile on how to reactivate dead quotes. For a sense of scale on dormant records, LeadsNow’s Colliers-era database reactivation work averaged 4.4% with an 8.9% peak; that is LeadsNow’s own record with no disclosed window or sample, not an industry benchmark.

Doing this yourself costs time, not money: a call on day 2, one before the other quotes are due, then monthly until a yes or no. Renovators who quote more bathrooms than they can call often hand that follow-up over; lead generation for bathroom renovation companies explains how LeadsNow books those conversations, and what a bathroom renovation lead costs shows what each lost quote cost you to win in the first place.

When is the cheaper bathroom quote genuinely cheaper?

The cheaper bathroom quote is genuinely cheaper when the gap survives line-by-line matching, the rival is licensed and insured, and the matched residual stays above about 15% of your price. Then check three things honestly: your labour rates against your local market, overheads a smaller operator does not carry, and whether the job is outside your sweet spot. A renovator built for full refits losing small same-layout jobs to a two-person crew has a targeting question, not a quoting failure.

Sources

1. NSW Government: Getting quotes for contractors (read 7 November 2026)
2. NSW Government: Contracts for residential building work, last updated 29 April 2026
3. NSW Government: Waterproofing work, last updated 23 June 2026
4. Region Canberra: Got a bargain quote for your renovation? Take a closer look (article featuring Mark Sheppard Bathrooms and Renovations, 29 July 2024)
5. Region Canberra: Renovation quotes aren’t apples to apples (partner content, October 2025)
6. What’s The Damage: Wollongong bathroom renovation worked quote examples (updated November 2026)
7. Houzz & Home Australia 2022