Tendering Your Build Is a Costly Disaster

“At some point, someone’s paying for that tender.”

We get why tendering feels like the sensible thing to do. Send the same drawings to a few builders, get a few numbers back, pick the best one, and move on.

But once you’ve been on the builder side of that process, you realise tendering isn’t the clean, fair, efficient system people think it is. It’s expensive, it’s isolating, and it sets the tone for the whole build before anyone’s even met properly.

When a tender lands in our inbox with no intro and a four-week due date, that’s already a red flag. If the first interaction is “do a month of work and maybe we’ll pick you”, we’re not starting from trust.

The tender package is usually far progressed. Soil report, survey, engineering, energy, civil, often interiors. In theory, that’s great because we can cost what’s there.

The problem is what tendering forces everyone to do with those documents.

If you want a truly competitive tender, every builder has to price exactly what’s on the plans. Every tap, every finish, every window, every detail. There’s no room for buildability conversations, performance tweaks, or value management because the moment you change anything, you’re no longer pricing the same job.

So the system rewards the lowest number, not the most honest one.

And the easiest way to get a lower number is simple. Price what’s drawn and stay quiet about what isn’t.

If a sewer upgrade or a boundary trap upgrade isn’t called up, we can leave it out. We might know it’s likely, but we’re not required to include it. Contractually, any gaps or missing details become legitimate variations later. That’s why tender jobs so often end up with more variations, more tension, and more “how did we not know this?” conversations.

Tendering is also expensive in a way clients rarely see.

To price a job properly, you’re talking weeks of work and a stack of trade pricing. Realistically, it can be fifteen to twenty grand worth of time per builder to do it properly. Multiply that by three builders and you’ve burned serious money before a contract even exists.

That money doesn’t disappear. At some point, someone’s paying for that tender.

It gets absorbed as overhead, it gets recovered through higher risk allowances, it gets baked into future pricing, or it shows up later through variations. There isn’t a version where tendering is “free”.

It also changes how we price risk.

If we’re tendering a project we don’t know, with limited time to digest the documentation, we have to protect ourselves. We haven’t had months to ask questions, close out grey areas, and build trust with the architect and client. So we price the risk.

That’s why we prefer a negotiated tender with a proper pre-construction process.

We’re not designers or engineers. Our role is to comment on buildability, performance, and cost, and to do it early enough that it actually helps. We use clear stop points along the way where pricing tightens as the drawings develop. Early on, it’s a range and a simple decision. Can you afford a number between here and here, yes or no? If yes, we proceed. If no, we redesign before anyone falls in love with expensive selections.

That structure protects everyone.

It protects the client from spending a fortune documenting a project they can’t afford. It protects the architect from being forced to design a Ferrari when the budget is a Suzuki Swift. It protects us from doing tens of thousands of dollars of unpaid work on a job we might never win.

Most importantly, it changes the incentives.

Instead of everyone being locked in a room with the same information and not talking, we’re working as a team. We raise questions early, we reduce the risk of variations, and we build trust over time.

Because building a home isn’t a transaction. It’s a relationship.

And if the first step in that relationship is a blind tender email and a due date, you’re basically choosing conflict as your project manager.

LINKS:

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ith us on Instagram:@themindfulbuilderpod

Connect with Hamish:

Instagram:  @sanctumhomes

Website:  www.yoursanctum.com.au/

Connect with Matt: 

Instagram: @carlandconstructions

Website: www.carlandconstructions.com/

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