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Case study: Rusty's Painting

How a Gold Coast painting contractor had 13 tenders priced in four months

Rusty's Painting is a painting contractor on the Gold Coast, bidding refurbishment work across South East Queensland: taverns, leagues clubs, hotels and private schools. We priced 13 tenders for them in four months.

tenders priced in four months
13
first job briefed, priced and invoiced
Same day
for all 13, including GST
$3,025.33
average a tender, including GST
$233

The first job took one day

The first job was Warner Tavern, on 16 March 2026. One painting estimator worked on it from 8.00am to 4.00pm Queensland time. The invoice went out that evening, for $141.19 including GST.

The result was a 55-line BOQ, colour-coded back to the drawing, so Rusty's could see where each number came from.

Existing plasterboard wall linings 457 m²
New plasterboard wall linings 68 m²
New plasterboard ceilings 400 m²
Existing ceilings 306 m²
One-coat sealer behind wallpaper and battens 309 m²
Shadowline 91 lineal metres
The Warner Tavern ceiling plan with each ceiling type shaded in its own colour and two cyan callouts marking gaps in the drawings.
The Warner Tavern ceiling plan, colour-coded by ceiling type. The two cyan callouts are the estimator flagging gaps in the drawings rather than quietly assuming: one asks about a bulkhead with no detail, the other notes a measured width that does not match the detail provided.

Checked against the builder's own BOQ

On 24 March, Luke at Rusty's compared one of our markups with the BOQ a builder had sent them.

"Last markup was great, a few smallish differences to what we had sent us from the builders BOQ but the break down from you guys was great!"
Luke, Rusty's Painting
"Was pretty close overall which is great, biggest difference was the wallpaper. But in saying that nothing to say your lads were wrong, we ended up running with the wallpaper BOQ from the builder only because they sent it to us."
Luke, Rusty's Painting

Five projects in one email

On 23 March, Rusty's sent us five projects at once. We quoted four of them at 35 hours in total and billed 35 hours. The fifth was stood down at their request when the builder sent its own BOQ, and we never billed it.

What it cost

All 13 tenders came to $3,025.33, including GST, an average of $233 a tender. Invoices ran from $100.85 for a revision to $403.40. The fees on our homepage exclude GST.

On a recent tavern painting package, our own budgetary estimate was about $150,000. That figure is not a contract sum. Against it, $233 is under 0.2%. If you win one tender in ten, the estimating behind a win is about $2,300.

Where it got to

The first job was a 55-line BOQ. The most recent estimates are a five-sheet workbook: a summary by trade section, a detailed bill, equipment and machinery allocation, calculations, and an assumptions register.

The register states what was priced and what was not. On one job it recorded that the tender drawings had no finishes schedule, that there were no written supplier quotations so public benchmarks were used, and that overhead and profit were added once. The workbook is headed budgetary. An estimate that tells you where it is soft is worth more than one that doesn't.

Thirteen invoices, every one paid.

If you are a trade contractor turning down tenders because there is no one to price them, this is what the alternative costs.

Get a price for your job

Quantities are from the issued BOQs and fees from issued invoices, in AUD including GST. Quotes are verbatim from client emails.