A wrong estimate could be the most expensive mistake you make. For residential builders across Australia, the gap between pre-construction and site starts is where margin gets lost: quotes that don't reflect reality, steps that fall through because no routine enforced them, and a job that hits the ground carrying problems the estimate created.

Companion Systems built Estimator Companion to fix exactly that.

The launch adds a dedicated estimating platform to the Companion Systems software suite, sitting alongside OnSite Companion, Liink Companion, Compliance Companion, and Services Companion.

For residential builders across Australia, it represents a connected workflow from first estimate through to handover, with no data left behind and no tools that don't talk to each other.

Estimating is a central pillar of the building industry, and many failures can be traced back to a misstep in the estimating process. We fit our software to each client's business so they can get the job done right the first time.

Matthew Camenzuli, Founder and Managing Director of Companion System

One input, zero rework

The most common cost in estimating is invisible until it's too late. A quote that was accurate on the day it went out becomes a liability the moment something changes and the system doesn't update with it.

Estimator Companion runs the entire workflow under a single login. Model to quote to live job, with no manual handoffs, no re-entry between platforms, and no version confusion between what was estimated and what actually gets built. Seamless integration with Xero, MYOB, and OnSite Companion keeps purchasing, finance and site operations aligned from the moment a quote is accepted.

Estimate with confidence, every build type

General Manager Angus Thomson ran his own successful building business on the Companion Systems suite before joining the team. His view of what good estimating looks like is grounded in the pressure of real project delivery.

'The estimate is where the job is won or lost. By the time you're on site, the margin is already set. Having a system that guides the routine, catches what would otherwise get missed, and connects directly to purchasing and accounts changes the outcome on every single job,' Angus says.

Build-type templates load directly into take-off pads and activate the correct estimating routines automatically, so nothing gets skipped regardless of time pressure.

Material orders are granular down to room, section and zone, enabling true just-in-time delivery that keeps sites clean and suppliers arriving in the right sequence.

Built around your business, not despite it

Fully customisable build-up routines mean products, quantities and scope adjust quickly without rewriting from scratch. Branded purchase orders with supplier-level terms and conditions pre-populated remove manual work at the back end of every quote. Traffic-light job profitability is visible at a glance, on any job, at any time.

Australian-built, Australian-supported

Estimator Companion has been built on 30+ years of real construction industry experience, developed by Australians, for Australians. The Companion Systems support team operates out of Sydney, with 99 per cent of support queries resolved within the first hour. No offshore call centres. No scripts. Just engineers who know the product and understand the industry.

See it running in your business

Book a demo with Companion Systems today and see what accurate estimates and profitable jobs look like.

This article was compiled with contribution from Companion Systems.