How Much Does a Bill of Quantities Cost?

What a Bill of Quantities costs in Australia

For most projects, a professionally measured Bill of Quantities lands between a few hundred dollars and a few thousand. As a working guide across the Australian market: a single-trade bill for a subcontractor, formwork, tiling, brickwork, typically sits in the $300 to $900 range. A full multi-trade BOQ for a new house or duplex usually runs $1,500 to $4,000. Multi-residential and commercial bills scale up from there with the size of the drawing set and the number of trades measured. Those are market ranges, not quotes: the honest answer for any specific job comes off the drawings, which is why credible estimators confirm a fixed fee up front rather than billing by the hour.

What actually drives the price

Four things set a BOQ fee. First, trade scope: measuring one trade package is a fraction of the work of measuring every trade from site works to finishes. Second, project scale and repetition: a 40-unit building with repeating floor plates measures faster per square metre than a one-off architectural house where nothing repeats. Third, drawing stage and quality: a complete, coordinated construction-certificate set measures cleanly, while a DA-stage or incomplete set means assumptions, queries and rework, and a bill measured off early drawings will need re-measuring once the design settles. Fourth, the level of detail you need: an elemental budget breakdown is quicker to produce than a tender-ready bill where every line is traceable to a drawing reference.

Single-trade bills cost less than most subcontractors expect

Subcontractors are the group most likely to assume a BOQ is a big-project luxury, and the group with the most to gain from one. A single-trade bill, your trade only, measured off the tender drawings with quantities you can drop your rates straight onto, sits at the bottom of the price range because the measuring is contained. Against the evenings it replaces and the tenders it lets you price properly (see what a formwork takeoff costs for a worked example in one trade), it is usually the cheapest labour on the whole tender.

What you're actually paying for

A real BOQ is measured off the drawings, not benchmarked off a rate per square metre, and it shows its working: quantities traceable to drawing references, a stated basis of measurement, and an assumptions and exclusions register. That paper trail is the product. It's what lets a builder tender trades on identical scope, lets a subcontractor defend a claim when the design changes, and lets anyone check the numbers instead of taking them on trust.

When a cheap bill becomes the expensive option

The cheapest bills on the market usually get their price down by not measuring: quantities benchmarked from "similar" projects, no drawing references, no exclusions register. The gap shows up later as missed scope, and missed scope on a tender becomes either a losing margin or a variation fight. If a bill costs a few hundred dollars less but can't tell you which drawing revision it was measured against, it isn't cheaper, it just moves the cost to the construction phase where it compounds.