A lot of the builders I speak to have already tried this. They handed their estimating to someone else, it came back wrong, and they ended up fixing it themselves. So they tried a different provider, only to get the same result.
After enough of that, most builders stop asking the question altogether. Estimating goes back to the kitchen table where it’s always been, and outsourcing gets filed away under ‘things that don’t work.’
One builder told me he went nearly nine years without letting anyone near his estimating. Not because he enjoyed doing it, but because fixing someone else’s work had turned out worse than doing it himself from the start.
In nearly every case like his, the estimate didn’t come back wrong because of the person doing the counting.
It came back wrong because nobody asked how he builds.
Estimating Is Two Jobs.
Only One Should Leave Your Business.
Break estimating into what it actually is.
There’s measuring and counting, which is working out how much of everything the job needs.
Then there’s pricing, which is applying your rates and your judgement to those quantities.
The pricing stays with you. You know what you’re paying for items, where the costs are coming from and which supplier sits behind each number. Nobody outside your business can make those calls for you.
Counting is different. Taking measurements, colouring in plans, working out how many bricks the job needs. That work has to happen, but it doesn’t have to happen to you.
Where outsourcing comes unstuck is builders handing over both halves at once. Then they’re left wondering where the prices came from and how anything was measured, so they check the lot anyway and pay for the same work twice.
Hand over the counting. Keep the costing.
Why the Database Can Be Wrong Before It Starts
The builder who avoided estimators for nine years told me why. What came back was square metres and lineal metres thrown into a calculation, and not accurately either. In his own words, it felt like something he could have done himself in an hour or two.
Another builder said much the same. Generic estimators throw out square metre rates that don’t reflect the specifics of what he actually does.
Notice what went wrong for both of them. They were sent rates. Someone else’s rates, pulled from a database, applied to their job.
Here’s why that can’t work: Take the same project home design and build it in Adelaide. Now build it 90 minutes north. Same soil type, same footing design, same drawings.
The real cost is different. Trades charge more out there. Materials travel further. The excavator is only in town on certain days, so you’re working around his run rather than your programme. Travel time gets added to half the trades on the job.
None of that shows up in a state-wide average. Which is the clearest argument I know for keeping the pricing where it belongs. No database knows your market. You do.
But the counting has to fit you as well, and that’s the second thing nobody asks about.
The Layer That Should Have Been Asked About
The standards you won’t compromise on. The products you trust. How your team is structured. The types of jobs you’re suited to. Your waterproofing calls, your flashing details, the membranes and claddings you’ve settled on because they work.
I call that your Builder DNA.
Two builders can hand over houses that look identical from the street and have got there completely differently. One buys frames. One buys lengths and sticks them up on site. One runs a direct crew. One subcontracts the lot. Whether you stick build or use prefabricated walls changes what your frames cost and how the whole package comes together.
So before we start the takeoff, we want to know:
- What project management software you’re running, so the bill of quantities drops straight in
- Whether you use your own carpenters or subcontract
- Whether you buy frames, or buy lengths and stick build
- How you want labour broken down if you’re paying hourly
- The products and sequences you prefer for the systems that matter, like membranes and claddings
Because if you build a certain way, you should be estimating that way.
A builder with his own crew who’s stick building needs cut lists, lengths, sheet counts and labour hours. A builder who buys everything pre-nailed and subbies it out needs none of that. Same house, two completely different documents.
That’s not a difference a database works out on its own.
What the Rework Actually Costs You
Ask builders what went wrong last time and you’ll hear the same thing. It wasn’t suited to the way they build.
So the work didn’t stop when the estimate landed. When the details aren’t right, you’re the one who ends up wearing it.
That double handling hits you three ways. You pay for the same job twice, because someone redoes the takeoff to order materials and raise purchase orders. The second version doesn’t match the first, so there’s now a gap between the budget you quoted from and the job you’re building. And the margin goes quietly, when real quantities overrun a loose allowance and you find out at the end rather than the start.
When something does slip through, it isn’t small. I’ve seen a single missed item cost builders between $20,000.00 and $30,000.00. That’s how easy it is.
Then there’s the cost that shows up nowhere. When a sheet lands in your inbox and there’s nothing behind it you can look at, you’ve got nothing to trust. You can’t tell whether a quantity is right or follow a number back to where it came from. So you take it on faith or you check it yourself, and neither is a good position to quote from.
Outsource something and then redo it yourself, and the whole exercise was a waste.
Four Questions to Ask Before You Sign With Anyone
1. Which half am I handing over?
You want the counting done properly and in one piece, then you bring your own pricing to a clean, complete set of quantities. If a provider wants to price the job for you, ask yourself how you’d ever verify it.
2. What will you learn about how I build before you start measuring anything?
Run the list above at them. Crew or subbies. Frames or lengths. Which membranes, which claddings, which sequences. Where you build. If the conversation goes straight to plans and turnaround times, you already have your answer.
3. Will the estimate come back in my layout, or yours?
Your categories, your cost centres, your structure. You shouldn’t be rearranging a document before your team can use it. Ask whether the output drops straight into what you’re already running, whether that’s Wunderbuild, Buildxact or Sitebook.
One builder we set up with a Wunderbuild integration puts the saving at a full day per job, purely from not transferring data between systems. A day per job, across a year of jobs, for a setup step that happens once.
4. Can I see where every number came from?
This is the question that decides whether you’ll end up checking the work anyway. When the estimate is built out of a detailed 3D construction model and you hold a copy of that model, every figure traces back to something you can look at. This quantity relates directly to that element. Nothing sits there asking you to take it on faith.
The Setup Takes Longer. That’s the Whole Point.
Doing this properly means more time before the first estimate lands, and some builders read that as a warning sign.
But look at this way: On a 24-hour job, about 22 of those hours go into getting the model right. The last couple are just letting the software produce the bill of quantities. The document at the end is the easy part. Everything that makes it correct happened before it existed.
Think about it the way you’d think about a build. You could skip the design phase and still end up with a house. It’ll stand up. But it’s going to be pretty average, and it won’t be the house you wanted.
And if your process isn’t sorted, handing it to more people won’t rescue it. A bad process with more labour thrown at it is just a worse bad process.
What the extra time buys you isn’t a faster document. It’s a setup that holds, and someone you can ring and work a problem through with, who’s modelling and detailing houses the way they’ll actually be built, right down to the epoxy for the chemset bolts.
Get that right once and you stop rebuilding it on every job.
Before You Outsource Anything, Find Out What It’s Costing You Now
Most builders who’ve been burned by an estimator never worked out what that cost them, let alone what their current process is costing them today.
Our Small Mistakes, Big Money 3-Minute Quiz looks at your estimating process as it stands right now.
In a few quick questions, you’ll see:
- Where your process is losing time you’re not accounting for
- Which parts of it are creating rework further down the line
- What that’s likely costing you across a year of projects
- Whether it’s set up well enough to hand any part of it over
At the end, you’ll get a free report showing where you stand and what to fix first.
Three minutes now is a lot cheaper than another estimator who didn’t work out.
Frequently Asked Questions
Why do builders end up fixing outsourced estimates themselves?
Because the estimate rarely fits how the builder actually builds. Providers often apply generic database rates without asking about crew, products or methods, so the builder redoes the takeoff before ordering materials and ends up paying for the same work twice.
Which part of estimating should a builder outsource?
The measuring and counting. Pricing should stay with the builder, because only they know their rates, suppliers and local market. Hand over the counting, keep the costing, then price a clean and complete set of quantities.
What is Builder DNA in estimating?
Builder DNA is the set of standards, products and methods that make one builder’s approach different from another’s. It covers things like whether you use your own crew or subcontractors, buy frames or stick build, and which membranes and claddings you trust. A good estimator learns it before the takeoff starts.
What should a builder ask before signing with an estimating provider?
Four questions: which half of the estimating am I handing over, what will you learn about how I build before measuring anything, will the estimate come back in my layout, and can I see where every number came from.
Why does the setup for an outsourced estimate take longer?
Most of the work goes into getting the 3D model right. On a 24-hour job, about 22 hours go into the model and only the last couple into producing the bill of quantities. That upfront setup is what makes the estimate hold up, so it does not need rebuilding on every job.
Learn more about Vision 2 Estimating (V2E). Vision 2 Estimating has strategic partnerships with leading building industry organisations such as APB and HIA.
